JPS61132499A - Recovering apparatus for oil for sealing stanchion tube of ship - Google Patents

Abstract

PURPOSE:To prevent the contamination of the sea due to the leak of oil for sealing stanchion tube outside a ship by introducing said oil into a bilge well through conduit. CONSTITUTION:When the lubricating oil 5 which fills the gap 4 between a stanchion tube 2 and a propeller shaft 3 leaks from a packing 8, said lubricating oil 5 is floated-up by the difference of specific gravity from that of the sea water and collected inside the vicinity of a large-diameter edge part 10' of a gird ring 10, since the upper parts of the sealing bodies 6 and 7 are covered by the gird ring 10 in circular truncated cone from. The leak of the lubricating oil 5 is detected by a proper sensor, and an ON/OFF valve 15 for remote control installed in the vicinity of a penetration hole 11 is opened, and the lubricating oil is introduced into a bilge well 13 through a conduit 14 by opening a manual ON/OFF valve 16 at a certain time intervals, and then recovered.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a vessel stun tube sealing oil recovery device for preventing the vessel stun tube sealing oil from flowing out into seawater. .

[Prior art and its problems]

FIG. 2 is a schematic vertical sectional view showing a conventional stern tube sealing device for a ship. As shown in the drawings, the stern tube 2 is fixed to the hull material 1 with bolts, and a propeller shaft 3 is inserted into the stern tube 2. At the rear end of the propeller shaft 3, Propeller 4 is fixed.

A gap between the stun tube 2 and the propeller shaft 3 is filled with lubricating oil 5 as a stun tube sealing oil having a pressure higher than seawater pressure.

In order to prevent the lubricating oil 5 mentioned above from leaking to the outside, a first sealing body 6 is provided at the tip of the stun tube 2, and a second sealing body 7 is provided at the rear end of the prong tube 4. is provided, and a backing 8 is filled between the first sealing body 6 and the second sealing body 7. Furthermore, one end is fixed to the hull material 1 on the outside of the first sealing body 6 and the second sealing body 7,
A guard ring 9 is provided, the other end of which slides into contact with the boss portion 4' of the propeller 4.

However, in the conventional stun tube sealing mechanism described above, in order to prevent seawater from entering, the lubricating oil 5 as the stun tube sealing oil filled in the gap between the stun tube 2 and the propeller shaft 3 is Since the pressure is higher than water pressure, there is a problem that the lubricating oil 5 leaks into the sea and pollutes the ocean.

[Purpose of the invention]

Therefore, an object of the present invention is to provide a method for properly recovering the leaked oil so that the oil for sealing the stun tube of a ship does not leak out of the ship and pollute the ocean.
An object of the present invention is to provide an oil recovery device for sealing a stun tube.

[Summary of the Invention] The device of the present invention uses a large diameter end portion of the stern tube sealing oil that is filled in the gap between the stern tube and the propeller shaft to recover leakage from the seal portion. is fixed to the hull material, and a truncated conical guard ring whose small diameter end slides into contact with the propeller boss, and a through hole provided in the hull material inside the fixed position of the large diameter end of the guard ring. The present invention is characterized in that the leakage of the stun tube sealing oil floating on the inner upper part of the guard ring is directed through the hole and a conduit for guiding the leaked oil to the bilge well through the through hole.

[Structure of the invention]

Next, the apparatus of the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic longitudinal sectional view showing one embodiment of the device of the present invention. Stun tube 2 as shown in the drawing
I'i is fixed to the hull material 1 with bolts,
A propeller shaft 3 having a propeller 4 fixed to its rear end is fitted into the stun tube 2, and a lubricating oil 5 is provided in the gap between the stun tube 2 and the propeller shaft 3.
is filled with a pressure higher than seawater pressure, and the stun tube 2
A first sealing body 6 is provided at the tip of the propeller 4, a second sealing body 7 is provided at the rear end of the propeller 4, and a backing is provided between the first sealing body 6 and the second sealing body 7. 8 is filled as in the conventional device.

In the device of this invention, a truncated conical guard ring 10 is provided outside the first sealing body 6 and the second sealing body 7, and the large diameter end 10' of the p1 guard ring 10 is connected to the hull of the ship. It is fixed to the member 1 by welding or the like, and its small diameter end 10' is in sliding contact with the death part 4' of the propeller 4.

Large diameter end 10' of guard ring 10 in hull material 1
A horizontal through hole 11 is provided inside the fixed position of / and close to the fixed position, and one end of the through hole 11 is connected to a pill well provided at the lower part of the double bottom 12 on the engine room carp side. A conduit 4 extending to 13 is connected.

15 is a remote control on-off valve provided in a portion of the conduit 14 near the through hole 11, 16 is a manual on-off valve provided in the middle of the conduit 14, and 17 is a hole/4'.

Next, the operation of the device of this invention will be explained.

Gap 4 between stun tube 2 and propeller shaft 3
If the lubricating oil 5 for stun tube oil that is filled in the sealing body 6 leaks from the sealing body 8, the sealing body 6
, 7 are covered by the guard ring 10 having a truncated cone shape, the leaked lubricating oil 5 floats to the surface due to the difference in specific gravity with the seawater and reaches the large diameter end 10 of the guard ring 10.
They gather inside near ′.

The leaked lubricating oil 5 collected in this way is detected by an appropriate detection sensor, and the remote control on-off valve 15 is opened, or the manual on-off valve 16 is opened at regular intervals. , it is guided through the conduit 14 to the pill well 13 and collected. The above-mentioned lubricating oil 5 can be collected in the bilge well 13 without requiring power since the seawater pressure is high when the ship is at full draft.

〔Effect of the invention〕

As described above, according to the present invention, leaked stun tube sealing oil can be accurately guided to the pill well and recovered without the need for power, thereby preventing it from leaking overboard and polluting the ocean. It brings about unprecedented effects.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a schematic vertical cross-sectional view showing a conventional device. In the drawings: 1...hull material, 2...stern tube,
3...Propeller shaft, 4...Propeller, 5...
・Lubricating oil, 6...First sealing body, 7...Second sealing body, 8...Backing, 9.10...Guard ring, 11...Through hole, 12...Double bottom , 13... Bill Sowell, 14... Conduit, 15
... Remote control on-off valve, 16... Manual on-off valve, 17... Hopper.

Claims (1)

[Claims] The large diameter end of the stern tube is fixed to the hull material, and the stern tube sealing oil that fills the gap between the stern tube and the propeller shaft is used to collect leakage from the seal part. A truncated conical guard ring whose small diameter end slides on the propeller boss, a through hole provided in the hull material inside the fixed position of the large diameter end of the guard ring, and a floating hole on the inner upper part of the guard ring. A stern tube sealing oil recovery device for ships, comprising a conduit for guiding leaked stern tube sealing oil to a bilge well through the through hole.