Intermediate bearing exhaust pipeline of propulsion system shafting

Abstract

The utility model relates to an intermediate bearing exhaust duct of a propulsion system shafting, which comprises a vent pipe, one end of the vent pipe is connected to a lubricating oil cavity of an intermediate bearing, the other end of the vent pipe extends to the upper end of a ship body, and one end, close to the lubricating oil cavity, of the vent pipe is provided with a concave bent pipe area. The ventilation pipes on the two sides of the bent pipe area are higher than the bent pipe area, and a water storage device used for collecting condensate water is further arranged at the lowest concave position of the bent pipe area. Through the arrangement of the bent pipe area and the water storage device, when condensate water appears in the vent pipe and flows back, the condensate water preferentially reaches the bent pipe area and flows into the water storage device in the bent pipe area, the condensate water of the vent pipe is effectively prevented from flowing back to a lubricating oil cavity of the middle bearing, and the middle bearing is protected.

Description

Technical Field

[0001] The utility model relates to the field of ship propulsion systems, in particular to an intermediate bearing exhaust pipe of a propulsion system shaft system. Background Art

[0002] The shaft length of a ship's propulsion system can reach tens of meters, so an intermediate bearing needs to be set in the direction of the shaft extension to support the operation of the intermediate bearing. A lubricating oil chamber is set inside the intermediate bearing. High-temperature steam will be generated in the lubricating oil chamber during the operation of the shaft system, so a breather pipe is needed to discharge the steam. Usually, one end of the breather pipe is connected to the breather hole on the top of the lubricating oil chamber, and the other end of the breather pipe extends to the top of the hull and is discharged into the atmosphere. During the exhaust process, part of the steam will be pre-cooled and liquefied. After liquefaction, it may gather along the inner wall of the breather pipe and then flow back to the lubricating oil chamber. Once it flows back, the lubricating oil in the lubricating oil chamber may be emulsified and deteriorated, which may affect the safe use of the intermediate bearing and the propulsion system. Utility Model Content

[0003] In order to solve the problem of condensed water backflow during the exhaust process of the lubricating oil chamber of the intermediate bearing, the utility model provides an intermediate bearing exhaust duct of the propulsion system shaft system, which collects the condensed water generated by condensation in the breather pipe to prevent the condensed water from flowing back into the lubricating oil chamber.

[0004] The technical objectives of this utility model are achieved through the following technical solutions:

[0005] An exhaust duct for an intermediate bearing of a propulsion system shaft system includes an air vent pipe, one end of which is connected to the lubricating oil chamber of the intermediate bearing, and the other end of which extends to the upper end of the hull. A concave bend area is provided at the end of the air vent pipe close to the lubricating oil chamber, the air vent pipes on both sides of the bend area are higher than the bend area, and a water reservoir for collecting condensed water is also provided at the lowest point of the concave bend area.

[0006] Furthermore, a pipe joint is connected to the lowest concave part of the bend area, and the water reservoir and the pipe joint are threadedly connected.

[0007] Furthermore, a discharge pipe is connected to the lower end of the water storage tank, and a discharge valve is provided on the discharge pipe.

[0008] Furthermore, an openable dust cap is provided at the discharge outlet of the discharge pipe.

[0009] Furthermore, the side wall of the water reservoir is also provided with a liquid level display device for observing the liquid level in the water reservoir.

[0010] Furthermore, the position where the bent pipe area is adjacent to the vent pipe is inclined downward by 3-5 degrees, and the inclination direction is from the vent pipe to the bent pipe area.

[0011] Furthermore, the dust cap is threadedly connected to the discharge pipe.

[0012] Compared with the existing technology, the beneficial effect of the present invention is that, through the arrangement of the bend area and the water reservoir, when condensed water appears in the vent pipe and the condensed water flows back, the condensed water will first reach the bend area and flow into the water reservoir in the bend area, effectively preventing the condensed water in the vent pipe from flowing back into the lubricating oil chamber of the intermediate bearing, thereby protecting the intermediate bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the arrangement of the exhaust pipe of the intermediate bearing of the propulsion system shaft system of the present utility model.

[0014] In the picture:

[0015] 1. Ventilation pipe; 2. Exhaust port; 3. Bend area; 4. Water reservoir; 5. Pipe joint; 6. Discharge pipe; 7. Discharge valve; 8. Dust cap; 9. Liquid level display device. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0017] An intermediate bearing exhaust duct of a propulsion system shaft system, such as Figure 1 As shown, the exhaust duct includes a breather pipe 1, one end of which is connected to the lubricating oil chamber of the intermediate bearing. Specifically, an exhaust port 2 is provided at the upper end of the lubricating oil chamber. The breather pipe 1 is connected to the exhaust port 2, and the other end of the breather pipe 1 extends to the upper end of the hull. A concave bend area 3 is provided at one end of the breather pipe 1 close to the lubricating oil chamber. The breather pipes 1 on both sides of the bend area 3 are higher than the bend area 3. A water reservoir 4 for collecting condensed water is also provided at the lowest point of the concave bend area 3.

[0018] Preferably, the position where the elbow area 3 and the vent pipe 1 are adjacent is tilted downward by 3-5°, with the vent pipe 1 tilted toward the elbow area 3 to facilitate the condensed water to flow back into the water reservoir 4 .

[0019] More specifically, a pipe joint 5 is connected to the lowest concave part of the bend area 3 , and the water reservoir 4 and the pipe joint 5 are threadedly connected.

[0020] In order to facilitate the discharge of condensed water, a discharge pipe 6 is connected to the lower end of the water storage tank 4 , and a discharge valve 7 is provided on the discharge pipe 6 .

[0021] Preferably, an openable dust cap 8 is provided at the discharge outlet of the discharge pipe 6 to prevent dust from entering the lubricating oil chamber. In this embodiment, the dust cap 8 is threadedly connected to the discharge pipe 7. When draining the water reservoir, the dust cap 8 and the discharge valve are opened. When draining is not required, the dust cap 8 remains installed on the discharge pipe 7.

[0022] Preferably, the side wall of the water reservoir 4 is further provided with a liquid level display device 9 for observing the liquid level in the water reservoir. In this embodiment, the liquid level display device 9 is a transparent side wall provided on the side wall of the water reservoir 4, and the liquid level in the water reservoir can be directly observed.

[0023] This embodiment is only a further explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. An exhaust duct for an intermediate bearing of a propulsion system shaft system, the exhaust duct comprising a breather pipe, one end of the breather pipe being connected to the lubricating oil chamber of the intermediate bearing, the other end of the breather pipe extending to the upper end of the hull, characterized in that: A concave bend area is provided at one end of the air vent pipe close to the lubricating oil cavity. The air vent pipes on both sides of the bend area are higher than the bend area. A water reservoir for collecting condensed water is also provided at the lowest point of the concave bend area.

2. The intermediate bearing exhaust duct of the propulsion system shafting according to claim 1, characterized in that: A pipe joint is connected to the lowest concave part of the bend pipe area, and the water reservoir and the pipe joint are threadedly connected.

3. The intermediate bearing exhaust duct of the propulsion system shafting according to claim 2, characterized in that: A discharge pipe is connected to the lower end of the water storage tank, and a discharge valve is provided on the discharge pipe.

4. The intermediate bearing exhaust duct of the propulsion system shafting according to claim 3, characterized in that: An openable dust cap is provided at the discharge outlet of the discharge pipe.

5. The intermediate bearing exhaust duct of the propulsion system shafting according to claim 1, characterized in that: The side wall of the water reservoir is also provided with a liquid level display device for observing the liquid level in the water reservoir.

6. The intermediate bearing exhaust duct of the propulsion system shafting according to claim 1, characterized in that: The position where the bend area is adjacent to the vent pipe is inclined downward by 3-5 degrees, and the inclination direction is from the vent pipe toward the bend area.

7. The intermediate bearing exhaust duct of the propulsion system shaft system according to claim 4, characterized in that: The dust cap is threadedly connected to the discharge pipe.

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