A water system for water-lubricated bearings of anti-silt ships

Abstract

The utility model relates to a water system for water-lubricated bearings of a silt-proof ship, comprising a bow seawater main pipe, a stern tube seawater transfer pump, a hydraulic cyclone filter, a slag pump, a stern shaft cooling water tank, a main thrust water-lubricated bearing water supply pump, a main thrust water-lubricated bearing water filter and a water distribution ring; the outlet of the bow seawater main pipe is connected to the stern tube seawater transfer pump, the outlet of the stern tube seawater transfer pump is connected to the hydraulic cyclone filter, the outlet of the hydraulic cyclone filter is connected to the slag pump, the outlet of the slag pump is connected to the stern shaft cooling water tank, the outlet of the stern shaft cooling water tank is connected to the main thrust water-lubricated bearing water supply pump, the outlet of the main thrust water-lubricated bearing water supply pump is connected to the main thrust water-lubricated bearing water filter, and the outlet of the main thrust water-lubricated bearing water filter is connected to the water distribution ring. The water system for water-lubricated bearings of a silt-proof ship can ensure the safe and stable operation of the ship while meeting environmental protection requirements.

Description

Technical Field

[0001] The utility model relates to a water system for water-lubricated bearings of a silt-proof ship. Background Art

[0002] Traditional ship propulsion devices add oil to the stern tube of the stern shaft to lubricate and cool the propulsion shaft system and bearings. Sealing devices are installed in front and behind the stern tube to prevent the lubricating oil in the stern tube from leaking out, and to prevent external seawater from invading the stern tube lubricating oil, causing lubricating oil emulsification and affecting shaft lubrication. However, since there is lubricating oil in the stern tube, when the seal fails, the leaked lubricating oil will inevitably pollute the marine environment. In order to solve this problem, water-lubricated bearings and systems came into being. Water-lubricated bearings use seawater as a lubricating and cooling medium, which fundamentally eliminates possible oil pollution, achieves green environmental protection in a fundamental sense, and has been widely used in various ship propulsion systems.

[0003] However, since water-lubricated bearings use seawater for lubrication and cooling, the quality of seawater will directly affect their lubrication performance. At the same time, water-lubricated bearings usually use polymer composite materials, which are less hard than oil-lubricated metal bearings. Impurities such as silt in seawater will directly affect the stable operation of the system. Especially for dredgers, offshore vessels and other ships with high silt content in working waters, a silt-proof ship water-lubricated bearing water system is proposed to address the above problems. Utility Model Content

[0004] The utility model aims to overcome the existing defects and provide a sediment-proof ship water-lubricated bearing water system, which can ensure the safe and stable operation of the ship while meeting environmental protection requirements.

[0005] The technical scheme for achieving the above-mentioned purpose is: a water system for water-lubricated bearings of a silt-proof ship, comprising a bow seawater main pipe, a stern tube seawater transfer pump, a hydrocyclone filter, a slag discharge pump, a stern shaft cooling water tank, a main thrust water-lubricated bearing water supply pump, a main thrust water-lubricated bearing water filter and a water distribution ring;

[0006] The outlet of the bow seawater main pipe is connected to the stern tube seawater transfer pump, the outlet of the stern tube seawater transfer pump is connected to the hydraulic cyclone filter, the outlet of the hydraulic cyclone filter is connected to the slag discharge pump, the outlet of the slag discharge pump is connected to the stern shaft cooling water tank, the outlet of the stern shaft cooling water tank is connected to the main thrust water-lubricated bearing water supply pump, the outlet of the main thrust water-lubricated bearing water supply pump is connected to the main thrust water-lubricated bearing water filter, and the outlet of the main thrust water-lubricated bearing water filter is connected to the water distribution ring.

[0007] Preferably, there are two of the stern tube seawater transfer pump, the hydrocyclone filter and the slag discharge pump, each group of the stern tube seawater transfer pump, the hydrocyclone filter and the slag discharge pump are connected in series in sequence, the bow seawater main pipe outlet is connected to the two stern tube seawater transfer pumps in parallel, and the two slag discharge pump outlets are commonly connected to the stern shaft cooling water tank.

[0008] Preferably, there are two main thrust water-lubricated bearing water supply pumps and two main thrust water-lubricated bearing water filters, and each group of the main thrust water-lubricated bearing water supply pumps and the main thrust water-lubricated bearing water filters are connected in series; the outlet of the stern shaft cooling water tank is connected in parallel to the two main thrust water-lubricated bearing water supply pumps, and the two main thrust water-lubricated bearing water filter outlets are commonly connected to the water distribution ring.

[0009] Preferably, the stern shaft cooling water tank is also connected to a stern seawater main.

[0010] Preferably, the bow seawater main pipe and the stern seawater main pipe are both connected to the seabed gate.

[0011] Preferably, a liquid level sensor is provided in the stern shaft cooling water tank.

[0012] The beneficial effects of the utility model are as follows: the water system of the water-lubricated bearing of the anti-silt ship is provided with a bow seawater main pipe, a stern pipe seawater transfer pump, a hydraulic cyclone filter, a slag pump, a stern shaft cooling water tank, a stern seawater main pipe, a main thrust water-lubricated bearing water supply pump, a main thrust water-lubricated bearing water filter and a water distribution ring; the bow seawater main pipe is connected with the high and low seabed gates at the bow of the ship, and the seawater passes through the stern pipe seawater transfer pump arranged at the bow, and after preliminary treatment by the hydraulic cyclone filter, it is pumped to the stern shaft cooling water tank for sedimentation and buffering, thereby ensuring the cleanliness of the water source and ensuring the safety and stable operation of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a water system for a water-lubricated bearing of a silt-proof ship according to the utility model.

[0014] In the figure: 1. Bow seawater main pipe; 2. Stern tube seawater transfer pump; 3. Hydrocyclone filter; 4. Slag pump; 5. Stern shaft cooling water tank; 6. Stern seawater main pipe; 7. Main thrust water-lubricated bearing water supply pump; 8. Main thrust water-lubricated bearing water filter; 9. Water distribution ring; 10. Liquid level sensor. DETAILED DESCRIPTION

[0015] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] like Figure 1 As shown, a water system for water-lubricated bearings of a silt-proof ship includes a bow seawater main pipe 1, a stern tube seawater transfer pump 2, a hydrocyclone filter 3, a slag pump 4, a stern shaft cooling water tank 5, a main thrust water-lubricated bearing water supply pump 7, a main thrust water-lubricated bearing water filter 8 and a water distribution ring 9; the outlet of the bow seawater main pipe 1 is connected to the stern tube seawater transfer pump 2, the outlet of the stern tube seawater transfer pump 2 is connected to the hydrocyclone filter 3, the outlet of the hydrocyclone filter 3 is connected to the slag pump 4, the outlet of the slag pump 4 is connected to the stern shaft cooling water tank 5, the outlet of the stern shaft cooling water tank 5 is connected to the main thrust water-lubricated bearing water supply pump 7, the outlet of the main thrust water-lubricated bearing water supply pump 7 is connected to the main thrust water-lubricated bearing water filter 8, and the outlet of the main thrust water-lubricated bearing water filter 8 is connected to the water distribution ring 9. The stern shaft cooling water tank 5 is also connected to the stern seawater main pipe 6. The stern shaft cooling water tank 5 is connected to the stern seawater main 6 and the seabed door. Seawater can enter and exit through the connecting pipe. While self-balancing and adjusting the water level in the tank, it ensures that seawater can still be injected by gravity under emergency conditions.

[0018] Specifically, there are two stern tube seawater transfer pumps 2, two hydrocyclone filters 3 and two slag discharge pumps 4, and each group of stern tube seawater transfer pumps 2, hydrocyclone filters 3 and two slag discharge pumps 4 are connected in series in sequence. The outlet of the bow seawater main pipe 1 is connected to the two stern tube seawater transfer pumps 2 in parallel, and the outlets of the two slag discharge pumps 4 are commonly connected to the stern shaft cooling water tank 5.

[0019] Specifically, there are two main thrust water-lubricated bearing water supply pumps 7 and two main thrust water-lubricated bearing water filters 8, and each set of main thrust water-lubricated bearing water supply pumps 7 and main thrust water-lubricated bearing water filters 8 are connected in series; the outlet of the stern shaft cooling water tank 5 is connected in parallel to the two main thrust water-lubricated bearing water supply pumps 7, and the outlets of the two main thrust water-lubricated bearing water filters 8 are commonly connected to the water distribution ring 9.

[0020] Specifically, the bow seawater main pipe 1 and the stern seawater main pipe 6 are both connected to the seabed gate.

[0021] Specifically, a liquid level sensor 10 is provided in the stern shaft cooling water tank 5. The liquid level sensor 10 is an existing device, and the model may be a FJM-L magnetostrictive liquid level gauge. When the liquid level in the tank is too low, an alarm signal is issued.

[0022] Specifically, the bow seawater main pipe 1 is connected to the high and low seabed gates at the bow of the ship, and the seawater passes through the stern pipe seawater transfer pump 2 arranged at the bow, and after preliminary treatment by the hydrocyclone filter, it is pumped to the stern shaft cooling water tank 5.

[0023] Specifically, a main thrust water-lubricated bearing water supply pump 7 is provided at the stern, which draws water from the cooling water tank 5, and after being treated by the main thrust water-lubricated bearing water filter 8, it is pumped to the water distribution ring 9, and after distribution, the water is supplied to the bearing for cooling and lubrication.

[0024] Specifically, the system is provided with a seabed door and a seawater main 1 at the bow where the seawater is relatively clean, outside the stern engine room. The seawater is pumped to the stern shaft cooling water tank 5 at the stern through the stern pipe seawater transfer pump 2 arranged at the bow, and is used for lubrication and cooling of water-supply lubricated bearings. The system can select the water inlet position and height according to the water quality of the operating waters, so that the incoming water source is as clean as possible.

[0025] Specifically, a hydrocyclone filter 3 is installed behind the stern tube seawater transfer pump 2 to filter the seawater. While controlling the cleanliness of the water source as much as possible, active treatment measures are adopted to ensure the quality of seawater supplied to the water-lubricated bearings in extreme waters and working conditions. At the same time, the hydrocyclone filter and the built-in slag discharge pump 4 have no daily maintenance parts, and can basically achieve automatic control, maintenance-free, and reduce the work of the crew.

[0026] Specifically, the stern of the ship is provided with a stern cooling water tank 5, and the seawater treated by the hydrocyclone filter 3 is injected into the stern cooling water tank 4 for buffering and sedimentation. The stern cooling water tank 4 plays a role of buffering and sedimentation, ensuring the stability of the seawater supply pressure and water volume, and further removing impurities in the seawater to improve the water quality.

[0027] Specifically, the stern cooling water tank 4 is connected to the stern seawater main pipe 6 and the seabed door, and seawater can enter and exit through the connecting pipe. Under normal working conditions, seawater enters the stern cooling water tank 5 from the bow through the stern pipe seawater transfer pump 2 and the hydrocyclone filter 3. The displacement of the transfer pump 2 and the hydrocyclone filter 3 is greater than the water consumption of the water-lubricated bearing. The cooling water tank 5 maintains a positive pressure, and the water in the tank is discharged overboard through the stern seawater main pipe 6 and the seabed door to prevent external untreated seawater from entering the system; under working conditions such as the bow transfer pump 2 failing to supply water to the cooling water tank 5, the outboard seawater can be injected into the cooling water tank 5 through the stern seawater main pipe 6 and the seabed door by gravity, always ensuring that there is enough seawater to supply the main thrust water-lubricated bearing to ensure the safety of the ship.

[0028] Specifically, the system is equipped with a water filter 8 for water-lubricated bearings and a water supply pump 7. The water supply pump 7 takes water from the stern shaft cooling water tank 5, and supplies it to the stern tube front seal and water distribution ring 9 after further treatment by the water filter 8 for water-lubricated bearings, and then enters the water-lubricated bearings to lubricate and cool the bearings. The water filter 8 for water-lubricated bearings and the water supply pump 7 are arranged near the main propulsion water distribution ring 9 to ensure that the seawater is treated before entering the water-lubricated bearings, so as to avoid a large amount of impurities entering the bearings and affecting the safe and stable operation of the propulsion device.

[0029] The water system for water-lubricated bearings of the anti-silt ship is provided with a seabed door and a bow seawater main pipe 1 outside the stern engine room at the bow where the seawater is relatively clean. The seawater is pumped to the stern shaft cooling water tank 5 at the stern through the stern pipe seawater transfer pump 1 arranged at the bow for lubrication and cooling of the water-lubricated bearings. The system can select the water inlet position and height according to the water quality of the operating waters to make the incoming water source as clean as possible.

[0030] By installing a hydrocyclone filter 3 behind the stern tube seawater transfer pump 2, the seawater is filtered, and while the cleanliness of the water source is controlled as much as possible, active treatment measures are adopted to ensure the quality of seawater supplied to the water-lubricated bearings in harsh waters and working conditions. At the same time, the hydrocyclone filter 3 and the built-in slag discharge pump 4 have no daily maintenance parts, and can basically achieve automatic control, maintenance-free, and reduce the work of the crew.

[0031] The stern of the ship is provided with a stern cooling water tank 5, and the seawater treated by the hydrocyclone filter 3 is injected into the stern cooling water tank 5 for buffering and sedimentation. The stern cooling water tank plays a role of buffering and sedimentation, ensuring the stability of the seawater supply pressure and water volume, and further removing impurities in the seawater to improve the water quality.

[0032] By setting the stern cooling water tank 5 to be connected with the stern seawater main pipe 6 and the seabed door, seawater can enter and exit through the connecting pipe. Under normal working conditions, seawater enters the stern cooling water tank from the bow through the stern pipe seawater transfer pump 5 and the hydrocyclone filter 3. The displacement of the transfer pump and the hydrocyclone filter 3 is greater than the water consumption of the water-lubricated bearing. The cooling water tank maintains a positive pressure, and the water in the tank is discharged overboard through the stern seabed door to prevent external untreated seawater from entering the system; under working conditions such as the bow transfer pump failure and unable to supply water to the cooling water tank, the outboard seawater can be injected into the cooling water tank through the stern seabed door by gravity, always ensuring that there is enough seawater to supply the main thrust water-lubricated bearing to ensure the safety of the ship.

[0033] By setting the main thrust water-lubricated bearing water filter 8 and the main thrust water-lubricated bearing water supply pump 7, the water supply pump takes water from the stern shaft cooling water tank 5, and supplies it to the water distribution ring 9 after further treatment by the main thrust water-lubricated bearing water filter 8, and then enters the water-lubricated bearing for lubrication and cooling. The water-lubricated bearing water filter and water supply pump are arranged near the main thrust water distribution ring to ensure that the seawater is treated before entering the water-lubricated bearing, so as to avoid excessive impurities from entering the bearing and affecting the safe and stable operation of the main propulsion device.

[0034] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A water system for water-lubricated bearings of anti-silt ships, characterized in that: It comprises a bow seawater main pipe (1), a stern tube seawater transfer pump (2), a hydrocyclone filter (3), a slag discharge pump (4), a stern shaft cooling water tank (5), a main thrust water lubricated bearing water supply pump (7), a main thrust water lubricated bearing water filter (8) and a water distribution ring (9); The outlet of the bow seawater main pipe (1) is connected to the stern tube seawater transfer pump (2), the outlet of the stern tube seawater transfer pump (2) is connected to the hydraulic cyclone filter (3), the outlet of the hydraulic cyclone filter (3) is connected to the slag discharge pump (4), the outlet of the slag discharge pump (4) is connected to the stern shaft cooling water tank (5), the outlet of the stern shaft cooling water tank (5) is connected to the main thrust water-lubricated bearing water supply pump (7), the outlet of the main thrust water-lubricated bearing water supply pump (7) is connected to the main thrust water-lubricated bearing water filter (8), and the outlet of the main thrust water-lubricated bearing water filter (8) is connected to the water distribution ring (9).

2. The anti-silt ship water-lubricated bearing water system according to claim 1, characterized in that: The stern tube seawater transfer pump (2), the hydrocyclone filter (3) and the slag discharge pump (4) are all in two numbers, and each group of the stern tube seawater transfer pump (2), the hydrocyclone filter (3) and the slag discharge pump (4) are sequentially connected in series, the outlet of the bow seawater main pipe (1) is connected in parallel to the two stern tube seawater transfer pumps (2), and the outlets of the two slag discharge pumps (4) are commonly connected to the stern shaft cooling water tank (5).

3. The anti-silt ship water-lubricated bearing water system according to claim 1, characterized in that: There are two main thrust water-lubricated bearing water supply pumps (7) and two main thrust water-lubricated bearing water filters (8), and each set of the main thrust water-lubricated bearing water supply pumps (7) and the main thrust water-lubricated bearing water filters (8) are connected in series; the outlet of the stern shaft cooling water tank (5) is connected in parallel to the two main thrust water-lubricated bearing water supply pumps (7), and the outlets of the two main thrust water-lubricated bearing water filters (8) are connected together to the water distribution ring (9).

4. The anti-silt ship water-lubricated bearing water system according to claim 1, characterized in that: The stern shaft cooling water tank (5) is also connected to a stern seawater main pipe (6).

5. The anti-silt ship water-lubricated bearing water system according to claim 4, characterized in that: The bow seawater main pipe (1) and the stern seawater main pipe (6) are both connected to the seabed gate.

6. The anti-silt ship water-lubricated bearing water system according to claim 1, characterized in that: A liquid level sensor (10) is arranged in the stern shaft cooling water tank (5).

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