Lubricating oil recovery device for bearing smoke exhaust pipeline of steam turbine

Abstract

The utility model belongs to the technical field of turbine bearing smoke exhaust pipeline lubricating oil recovery, and particularly relates to a turbine bearing smoke exhaust pipeline lubricating oil recovery device which comprises an upper shell, a guide sleeve is fixedly connected in an inner cavity of the upper shell through a plurality of connecting ribs, a guide shaft is connected in the guide sleeve, and the upper end of the guide shaft is fixedly connected with a limiting block. The guide shaft is sleeved with a spring located between the limiting block and the guide sleeve, the lower end of the guide shaft is fixedly connected with a blocking plate, the blocking plate is matched with a lower port of the upper shell, the outer side of the lower end of the upper shell is connected with a lower shell, and an oil outlet is formed in the lower end of the lower shell. According to the lubricating oil recovery device for the bearing smoke exhaust pipeline of the steam turbine, lubricating oil carried in smoke can be collected and reused, waste of the lubricating oil is prevented, and the ground environment outside a main workshop is protected.

Description

Technical Field

[0001] The utility model relates to a lubricating oil recovery device for a steam turbine bearing smoke exhaust pipeline, belonging to the technical field of lubricating oil recovery for a steam turbine bearing smoke exhaust pipeline. Background Art

[0002] A steam turbine is a heat engine that converts the kinetic energy of a high-speed fluid into mechanical energy. Its working principle is to generate power on the blades through a circulating fluid (usually steam) and drive the shaft to transmit mechanical energy. As an efficient and energy-saving engine, it is widely used in power generation, power and industrial fields to provide power and energy for various equipment.

[0003] During the operation of the steam turbine, the main oil tank exhaust system of the steam turbine directly discharges the main oil tank smoke to the outside of the main plant through the exhaust pipe. Due to the wear of the bearing seals and overheating of the bearings, the smoke often carries some lubricating oil. This part of the lubricating oil is discharged to the outside of the main plant with the smoke, which not only wastes the lubricating oil, but also pollutes the ground environment outside the main plant. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a lubricating oil recovery device for a steam turbine bearing exhaust pipe, which can collect and reuse the lubricating oil carried in the flue gas.

[0005] The utility model discloses a lubricating oil recovery device for a steam turbine bearing smoke exhaust pipe, comprising an upper shell, a guide sleeve fixedly connected to the inner cavity of the upper shell by a plurality of connecting ribs, a guide shaft connected inside the guide sleeve, the upper end of the guide shaft fixedly connected to a limiting block, a spring sleeved on the guide shaft and located between the limiting block and the guide sleeve, a blocking plate fixedly connected to the lower end of the guide shaft, the blocking plate matches the lower port of the upper shell, the lower end of the upper shell is connected to the outer side of the lower end of the lower shell, and an oil outlet is provided at the lower end of the lower shell.

[0006] Furthermore, a step is provided at the upper port of the upper shell.

[0007] Furthermore, the limit block and the guide shaft are threadedly connected.

[0008] Furthermore, the limit block is conical, and the bottom diameter of the limit block is larger than the diameter of the guide sleeve.

[0009] Furthermore, a filter screen is radially installed in the inner cavity of the lower shell.

[0010] Furthermore, the lower shell and the upper shell are threadedly connected.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The lubricating oil recovery device for the exhaust pipe of the steam turbine bearing described in the utility model can collect and reuse the lubricating oil carried in the smoke, which not only prevents the waste of the lubricating oil, but also protects the ground environment outside the main plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0014] In the figure: 1. step; 2. upper shell; 3. limit block; 4. spring; 5. guide sleeve; 6. connecting rib; 7. guide shaft; 8. blocking plate; 9. lower shell; 10. filter screen; 11. oil outlet; 12. oil leakage hole; 13. smoke exhaust duct. DETAILED DESCRIPTION

[0015] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0016] Embodiment 1:

[0017] like Figure 1 As shown, the lubricating oil recovery device for the exhaust pipe of the turbine bearing described in the utility model comprises an upper shell 2, a guide sleeve 5 is fixedly connected to the inner cavity of the upper shell 2 through a plurality of connecting ribs 6, a guide shaft 7 is connected inside the guide sleeve 5, the upper end of the guide shaft 7 is fixedly connected to a limiting block 3, a spring 4 is sleeved on the guide shaft 7 and is located between the limiting block 3 and the guide sleeve 5, a plugging plate 8 is fixedly connected to the lower end of the guide shaft 7, the plugging plate 8 matches the lower port of the upper shell 2, the lower end of the upper shell 2 is connected to the outer side of the lower shell 9, and the lower end of the lower shell 9 is provided with an oil outlet 11.

[0018] When in use, an oil leakage hole 12 is pre-opened at the bottom of the smoke exhaust pipe 13 near the pipe outlet, and then the upper shell 2 of the device corresponding to the oil leakage hole 12 is welded to the bottom of the smoke exhaust pipe 13, and then the oil outlet 11 is connected to the turbine oil tank through an oil pipe; the lubricating oil carried by the smoke in the smoke exhaust pipe 13 will flow into the inner cavity of the upper shell 2 through the oil leakage hole 12 and gather on the plugging plate 8. Due to the presence of the lubricating oil and the plugging plate 8, the smoke in the smoke exhaust pipe 13 will not flow out of the upper shell 2. When the lubricating oil gathered on the plugging plate 8 reaches a certain amount, Under the guiding action of the guide sleeve 5 and the guide shaft 7, the lubricating oil can press the blocking plate 8 to overcome the elastic force of the spring 4 and move downward, so that the blocking plate 8 is separated from the lower port of the upper shell 2, so that the lubricating oil flows from the lower port of the upper shell 2 into the inner cavity of the lower shell 9, and then flows back to the turbine oil tank through the oil outlet 11 and the oil pipe, thereby completing the collection and reuse of the lubricating oil; as the lubricating oil flows out of the blocking plate 8, the pressure of the lubricating oil on the blocking plate 8 becomes smaller, and under the resetting action of the spring 4, the guide shaft 7 can drive the blocking plate 8 to move upward and re-block the lower port of the upper shell 2.

[0019] The lubricating oil recovery device for the exhaust pipe of the steam turbine bearing described in the utility model can collect and reuse the lubricating oil carried in the smoke, which not only prevents the waste of the lubricating oil, but also protects the ground environment outside the main plant.

[0020] Embodiment 2:

[0021] like Figure 1 As shown, based on Example 1,

[0022] Furthermore, a step 1 is provided at the upper end of the upper shell 2, and the step 1 can increase the contact area between the upper shell 2 and the smoke exhaust pipe 13, thereby making the welding between the two stronger and improving the structural stability;

[0023] Furthermore, the limit block 3 and the guide shaft 7 are threadedly connected, and the limit block 3 can be removed, so that the spring 4 can be removed, which is convenient for maintenance or replacement of the spring 4;

[0024] Furthermore, the stop block 3 is conical, and the bottom diameter of the stop block 3 is larger than the diameter of the guide sleeve 5, so as to guide the lubricating oil and facilitate the lubricating oil to flow onto the blocking plate 8;

[0025] Furthermore, a filter screen 10 is radially installed in the inner cavity of the lower housing 9, and the filter screen 10 can filter the collected lubricating oil, thereby effectively improving the recovery quality of the lubricating oil;

[0026] Furthermore, the lower shell 9 and the upper shell 2 are threadedly connected, and the lower shell 9 and the upper shell 2 can be detached to facilitate maintenance or replacement of the filter 10.

[0027] It is particularly noted that in the description of the present invention, the terms "inside", "outside", "upper", "lower", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A lubricating oil recovery device for a steam turbine bearing exhaust pipe, characterized in that: The invention comprises an upper shell (2), wherein a guide sleeve (5) is fixedly connected to the inner cavity of the upper shell (2) via a plurality of connecting ribs (6), a guide shaft (7) is connected inside the guide sleeve (5), the upper end of the guide shaft (7) is fixedly connected to a limit block (3), a spring (4) is sleeved on the guide shaft (7) and is located between the limit block (3) and the guide sleeve (5), the lower end of the guide shaft (7) is fixedly connected to a blocking plate (8), the blocking plate (8) matches the lower port of the upper shell (2), the lower end of the upper shell (2) is connected to a lower shell (9) on the outer side, and an oil outlet (11) is provided at the lower end of the lower shell (9).

2. The lubricating oil recovery device for the exhaust pipe of a steam turbine bearing according to claim 1 is characterized in that: A step (1) is provided at the upper end of the upper shell (2).

3. The lubricating oil recovery device for the exhaust pipe of a steam turbine bearing according to claim 1 is characterized in that: The limit block (3) and the guide shaft (7) are threadedly connected.

4. The lubricating oil recovery device for the exhaust pipe of a steam turbine bearing according to claim 1 is characterized in that: The limiting block (3) is conical, and the bottom surface diameter of the limiting block (3) is larger than the diameter of the guide sleeve (5).

5. The lubricating oil recovery device for a steam turbine bearing exhaust pipe according to any one of claims 1 to 4, characterized in that: A filter screen (10) is radially installed in the inner cavity of the lower shell (9).

6. The lubricating oil recovery device for the exhaust pipe of a steam turbine bearing according to claim 5 is characterized in that: The lower shell (9) and the upper shell (2) are connected by threads.

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