JPH0594097U - Seawater pipe air separator - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to provide an air separator for a seawater pipe that can reliably remove air from the seawater pipe and prevent failure of the cooling seawater pump due to air inclusion. [Configuration] Seawater pipe 16 connected to the seawater box 14 of the ship
Seawater pipe 16 from the ship bottom valve 15 to the cooling seawater pump 19
In addition, a cylindrical air separator body 1 having an upper portion opened and a side wall penetrating straightly with an inlet pipe 2 and an outlet pipe 3 and a disc closing the upper opening of the air separator body 1 From the upper lid 4 of the shape, the partition plate 7 protruding vertically downward on the lower surface of the upper lid 4, and the primary air vent pipe 5 and the secondary air vent pipe 6 fixed to two positions on both sides of the partition plate 7 of the upper lid 4. In the air separator body 1, the partition plate 7 forms two chambers, a primary air vent chamber 10 and a secondary air vent chamber 11, so that only the bottom portion can pass water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air separator for seawater pipes connected to seawater pipes from a bottom valve of a seawater pipe connected to a seawater box of a ship to a cooling seawater pump.

[0002]

[Prior Art]

 Conventionally, this type of device has not been particularly devised, and as shown in FIG. 4, a seawater pipe 33 is piped from a ship bottom valve 32 connected to a seawater box 31 to a cooling seawater pump 36, and a cooling seawater pump 36 is provided. It is known that the seawater pipe 33 in the vicinity is connected to the seawater pipe 33 through a valve 34 and a strainer 35, and an air vent pipe 37 is provided above the seawater box 31.

[0003]

[Problems to be solved by the device]

 As described in the prior art, by only providing an air vent pipe on the upper part of the seawater box, when seawater containing air flows into the seawater box, the air will not be exhausted and the air will be present inside the seawater tube as bubbles. When the cooling seawater pump sucks seawater containing water, the pressure of the cooling seawater pump is lowered, and the cooling seawater pump causes cavitation, which causes a problem of the cooling seawater pump.

The present invention has been made in view of the above problems of the conventional technique, and its purpose is to reliably remove air from the seawater pipe up to the cooling seawater pump. The present invention intends to provide an air separator for seawater pipes that does not cause a failure of the cooling seawater pump due to air mixing.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention relates to a seawater pipe from a bottom valve of a seawater pipe connected to a seawater box of a ship to a cooling seawater pump, in which an upper portion is opened and a side surface is directly penetrated. A cylindrical air separator main body having an inlet pipe and an outlet pipe projecting at a position, a disk-shaped upper lid closing the upper opening of the air separator body, and a vertically downward projection on the lower surface of the upper lid. It is composed of a partition plate and air vent pipes that are fixedly installed at two positions on both sides of the partition plate of the upper lid. The inlet pipe and the outlet pipe of the air separator body are respectively the bottom valve side of the seawater pipe and the cooling seawater pump side. , And the upper opening of the air separator body is closed with an upper lid and bolted, and two air vent chambers are formed in the air separator body by partition plates so that only the bottom portion can pass water.

[0006]

[Action]

 The partition plate that projects vertically downward from the lower surface of the upper lid has two air vent chambers in the air separator body that allow water to pass through only the bottom, and the sea water is vented continuously in the two chambers. It will be possible.

[0007]

【Example】

 An embodiment will be described with reference to the drawings. As shown in FIGS. 1 to 3, a cylindrical air separator interposed in a seawater pipe 16 from a bottom valve 15 to a cooling seawater pump 19 in a seawater box 14 of a ship. The upper part of the main body 1 is opened, and the inlet pipe 2 and the outlet pipe 3 are provided so as to project straightly through the side surface of the air separator main body 1.

A disk-shaped upper lid 4 for closing the upper opening of the air separator body 1 is provided, and a partition plate 7 is vertically projected downward from the lower surface of the upper lid 4, and two positions on both sides of the partition plate 7 of the upper lid 4 are provided. Firstly, the primary air vent pipe 5 and the secondary air vent pipe 6 are fixedly installed.

The inlet pipe 2 and the outlet pipe 3 of the air separator body 1 are connected to the seawater pipes 16, respectively, and the upper opening of the air separator body 1 is closed with an upper lid 4 and bolts 8 are tightened. A partition plate 7 is provided with a communication port 9 through which water can pass only through the bottom, and two chambers, a primary air vent chamber 10 and a secondary air vent chamber 11, are formed.

In this embodiment, seawater 12 containing bubbles sucked into the seawater pipe 16 from the bottom valve 15 by the cooling seawater pump 19 enters the primary air vent chamber 10 in the air separator body 1 from the inlet pipe 2, The air 13 contained in the seawater 12 flows through the primary air vent pipe 5 and is discharged. Then, the seawater collides with the partition plate 7 to reduce the flow velocity, and passes under the partition plate 7 and flows through the communication port 9. The air 13 remaining in the seawater 12 that has entered the secondary air vent chamber 11 flows through the secondary air vent pipe 6 and is discharged, and the sea water 12 from which the air 13 has been vented is discharged from the outlet pipe 3 to the valve 17 and the strainer 18. After that, it is sucked into the cooling seawater pump 19.

[0011]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. The seawater pipe is equipped with an air separator that allows air to be removed twice, so that even if seawater containing air bubbles flows into the seawater box, the air can be reliably separated and discharged, and the cooling seawater pump does not have air. Prevents the cooling seawater pump from malfunctioning due to air inclusion without causing air bubbles to mix in and causing a pressure drop in the cooling seawater pump.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of an embodiment according to the present invention.

FIG. 2 is a schematic plan view of an embodiment according to the present invention.

FIG. 3 is a system diagram of a seawater line up to a cooling seawater pump equipped with an embodiment according to the present invention.

FIG. 4 is a system diagram of a seawater line up to a conventional cooling seawater pump.

[Explanation of symbols]

 1 Air Separator Main Body 2 Inlet Tube 3 Outlet Tube 4 Upper Lid 5 Primary Air Venting Tube 6 Secondary Air Venting Tube 7 Partition Plate 8 Bolt 9 Communication Port 10 Primary Air Venting Room 11 Secondary Air Venting Room 12 Sea Water 13 Air 14 Sea Water Box 15 Ship Bottom Valve 16 Seawater pipe 17 Valve 18 Strainer 19 Cooling seawater pump

Claims (1)

[Scope of utility model registration request] 1. A seawater pipe extending from a bottom valve of a seawater pipe connected to a seawater box of a ship to a cooling seawater pump, wherein an upper part of a cylindrical air separator main body is opened, and a side surface of the air separator main body is straightened. An inlet pipe and an outlet pipe projecting at a position penetrating to, and a disk-shaped upper lid that closes the upper opening of the air separator body is provided, and a partition plate is projected vertically downward on the lower surface of the upper lid, Air vent pipes are fixedly installed at two locations on both sides of the partition plate of the upper lid, and the inlet pipe and the outlet pipe of the air separator body are connected to the bottom valve side of the seawater pipe and the cooling seawater pump side, respectively, and the upper part of the air separator body is connected. An air separator for a seawater pipe, characterized in that the opening is closed with an upper lid and bolted, and two air vent chambers are formed in the air separator body by a partition plate so that only the bottom portion can pass water.