JPH0796107A - Filter for cooling water in marine vessel - Google Patents

Abstract

PURPOSE:To prepare a filter for cooling water with extremely small fluid resistance. CONSTITUTION:A cylindrical part body 11 in which a feeding port 12 for cooling water and a discharge port 13 for cooling water are formed on one end side and on the other end side, respectively, is installed. A partition wall 14 is arranged in the direction along the flow inside the cylindrical part body 11 to form right and left passes 15 for cooling water, Opening/closing plates 18, 19 for opening and closing openings 16, 17 formed at the ends of the passes for cooling water 15 are provided so as to freely swing at both the ends of the partition wall 14. The opening/closing plates 18, 19 are swung together either right or left to make one pass for cooling water 15 in a state of use and also to make the other pass for cooling water 15 in a state of being closed. Filter members 35 arranged in the passes for cooling water 15 are freely attachably and detachably provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine cooling water filter for a ship.

[0002]

2. Description of the Related Art Usually, cooling water for engines for ships (for main machinery, auxiliary machinery, etc.) is sucked up from a water absorption part such as a sea chest and a scoop provided at the bottom of a ship through a pump. Seawater is used. The seawater sucked up is supplied around the engine to cool the engine.

The sea chest and the scoop are used properly depending on the type of the ship. For example, the sea chest is used in a low speed ship and the scoop is used in a high speed ship.

Then, as shown in FIG. 5, the pump 5 is provided in the water supply pipe 53 from the water absorbing portion 51 to the engine 52.
4, a filtering device 55, a switching valve 56, etc. are arranged, and in this filtering device 55, a pair of vertical filtering cylinders 58 each having a cylindrical filter 57 inserted therein are provided in order to replace the filter. At the same time, the switching valves 56 are interposed in the horizontal pipe portions 53a to the respective filtration cylinders 58.

The cooling water (seawater) supplied to the filter cylinder 55 is supplied into the annular space chamber 61 between the filter 57 and the inner wall surface of the filter cylinder 58, and then the inside of the annular space chamber 61 is lifted to the filter 57. The cooling water that passed and was filtered through the filter 57 was supplied to the engine 52 side after being taken out from the bottom wall portion of the filter cylinder 58 through the inside of the filter 57.

[0006]

By the way, according to the structure of the above-mentioned filtering device, the respective filter cylinders 58 are arranged in the vertical direction, and the flow of the cooling water inside the filter cylinders 58 is ascending and descending. Further, the piping to each filter cylinder 58 has many bends (in particular, many right-angled portions), and the switching valve 56 interposed in the middle is also a four-way switching valve. There is a problem that the resistance of the pipe and the resistance generated by the valve are very large. Furthermore, since the filter cylinder 58 is provided in the vertical direction, the flow of the cooling water inside the filter cylinder 58 is also changed from rising to falling. There has been a problem that more resistance is generated and the resistance loss of the fluid generated in the filtration device is large as a whole.

[0007] Therefore, an object of the present invention is to provide a cooling water filtering device for a ship, which can solve the above problems.

[0008]

In order to solve the above-mentioned problems, the first means of the present invention is to provide a cooling water pipe for supplying the engine with the cooling water sucked from the water absorption part provided at the bottom of the ship. A filter provided with a cooling water supply port formed at one end and a cooling water discharge port formed at the other end.
Arranging the partition wall in the direction along the both ends thereof, to form the left and right cooling water passages, at each end portion of the partition wall, to form an opening communicating with each of the left and right cooling water passages,
Opening and closing plates for opening and closing the left and right openings at each of the above end portions are swingably provided, and the opening and closing plates at each of these end portions are swung together in either the left or right direction to open one cooling water passage. A cooling water filtering device for a ship, which is configured to be in use and has the other cooling water passage closed so that a filter member disposed in each cooling water passage is detachably provided. .

In order to solve the above-mentioned problems, the second means of the present invention is to cool a ship in which the corners on the respective end sides of the tubular body in the first means are curved. It is a water filtering device.

[0010]

According to the above construction, the partition wall is arranged inside the tubular body to provide the left and right cooling water passages into which the filter members are respectively inserted, and at both end portions of the tubular body,
Since the cooling water supply port and the cooling water supply port are formed, the cooling water flowing through the filter member flows almost straight, so that, for example, the cooling water flows from the upward direction to the downward direction by 180 °.
Unlike what varies, the fluid resistance is reduced.

Further, since the switching of the cooling water passage is performed by the open / close plate provided at each end of the cylindrical body so as to be swingable, unlike the case where a four-way switching valve is used, for example. Fluid resistance is reduced.

Further, since the corners on the respective end sides of the tubular body are formed into curved surfaces, the cooling water can smoothly flow into the tubular body, and the fluid resistance can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, 1 is provided in the middle of a cooling water pipe 2 for supplying cooling water sucked from a water absorption part (sea chest, scoop, etc.) provided at the bottom of the ship to an engine (main engine or auxiliary machine) It is a filter device.

In this filtering device 1, a cooling water supply port 12 is formed on one end side, and a cooling water discharge port 13 is formed on the other end side. The tubular portion main body (cylindrical body) 11 is provided, and the partition wall 14 is arranged inside the tubular portion main body 11 across both ends thereof, that is, in the front-back direction (direction of the center line a). The left and right cooling water passages 15 are formed.

Openings 16 and 17 communicating with the left and right cooling water passages 15 are formed at both ends of the tubular body 11 and the left and right openings at each end are formed. Opening / closing plate 1 for selectively opening and closing 16, 17
8 and 19 are swingably arranged.

Each of the openings 16 and 17 has a rectangular shape. Therefore, the opening / closing plates 18 and 19 have a rectangular shape, and of course, have a shape larger than the area of the openings 16 and 17. Has been done.

A shaft portion 20 is formed on the base end side of the opening / closing plates 18 and 19, and the shaft portion 20 is rotatable in a cylindrical portion 21 formed at the end portion of the partition wall 14. It has been inserted. The upper end of the shaft portion 20 is provided so as to project from the upper plate portion 11a of the tubular portion main body 11 by a predetermined height, and the upper and lower portions of the openings 16 and 17 are
A stopper plate 22 for restricting the swing angle of the opening / closing plates 18 and 19 is provided.

Then, on the upper surface of the tubular portion main body 11,
Both the opening and closing plates 18 and 19 at the front and rear sides are swung together in either the left or right direction so that one cooling water passage 15 is used and the other cooling water passage 15 is closed. An opening / closing tool 31 is provided for the purpose.

That is, the opening / closing tool 31 is used for each opening / closing plate 1.
A pair of drive levers 32 each having one end fixed to a projecting portion of a shaft portion 20 provided at the base end portions of 8 and 19, and a pair of drive levers 32 fixed to the other end of the one drive lever 32 and the other end. It is composed of a connecting pin 34 slidably inserted into an elongated hole 33 formed in the other end of the drive lever 32.

Therefore, the connecting pin 34 is replaced by the one shown in FIG.
As shown by the solid and phantom lines in FIG. 1, when the door plates 18 and 19 are moved in the left-right direction b, the opening and closing plates 18 and 19 swing as shown by the solid and phantom lines in FIG. 15
Can be switched.

A filter member 35 is disposed in each cooling water passage 15 of the tubular portion main body 11 via a guide body 36, and each filter member 35 is placed on the tubular portion main body 11 respectively. Outlet 37 formed in the plate portion 11a
It can be freely inserted and removed from. Of course, a cover plate 38 is provided at the outlet 37 formed in the upper plate portion 11a of the tubular portion main body 11.

The filter member 35 is the guide member 3
6, a triangular prism-shaped frame body 38 supported by 6, and this frame body 38
A filter (made of, for example, a wire mesh) attached to the two upstream surfaces of the cooling water passage 15 (in a V shape) 3
It is composed of 9 and 9.

The cross-sectional area of the tubular portion main body 11 has a cross-sectional area of the supply port 1 in order to reduce frictional resistance in the filter 39.
2 is larger than the cross-sectional area of the cooling water pipe 2, that is, about 5 to 10 times larger than the pipe diameter of the cooling water pipe 2, and is slower than the flow velocity in the cooling water pipe 2 in the tubular portion main body 11 ( 1 /
5 to 1/10 times). Further, as described above, the shape of the tubular portion main body 11 in plan view is an elliptical shape, and therefore, the supply port 12 and the discharge port 13 are formed.
The shape of the corner portion 11b in each portion is an arcuate curved surface, and it is taken into consideration that the resistance due to the shape generated at the time of inflow and outflow to the tubular portion main body 11 is reduced.

Further, as shown in FIG. 1, the supply port 12
The discharge port 13 and the discharge port 13 are formed along the pipe direction of the cooling water pipe 2 so as to reduce the fluid resistance generated when the cooling water flows in and out.

In the above structure, when the cooling water (seawater) sucked from the water absorbing portion is supplied to the engine, the opening / closing plates 18 and 19 are swung to the right when viewed from the downstream side, as shown in FIG. Then, the cooling water passage 15A on the left side is opened to be in a use state. Then, as shown by an arrow A, the cooling water flows straight into the cooling water passage 15A from the cooling water pipe 2 and the supply port 12, and is filtered by the filter 39 arranged in the cooling water passage 15A. After that, it flows out to the discharge port 13 and the cooling water pipe 2 side by a substantially straight path.

By the way, the cooling water passage 15A on the left side is provided.
When the filter 39 arranged in the above is clogged or damaged, the connecting pin 34 is moved to the opposite side,
By swinging the opening / closing plates 18 and 19 in opposite directions (shown by phantom lines in FIG. 1), the left side cooling water passage 15A is closed and the right side cooling water passage 15B is opened for use. To do.

Then, the lid 38 on the closed side is opened to clean the filter 39 in the cooling water passage 15A on the left side, or the filter member 35 is taken out and a new filter member is inserted for replacement. To do. Of course, when cleaning or replacing the filter 39 in the cooling water passage 15B on the right side, the opening / closing plates 16 and 17 at both ends may be swung to the position shown by the solid line in FIG.

Thus, the filtering device 1 in this embodiment
In the conventional method, the cooling water does not flow upside down as in the prior art, and the cooling water passage is provided in the tubular body 11 in the left-right direction. Since the opening portions 16 and 17 of the cooling water passage are switched by swinging the opening and closing plates 18 and 19, the flow passage is changed by a four-way switching valve as in the related art, compared with the case of switching. There is almost no fluid resistance.

Further, since the two cooling water passages 15 parallel to each other are formed in the single tubular portion main body 11, the apparatus can be made smaller than the conventional configuration. By the way, in the above-mentioned embodiment, it is described that the connecting pin 34 is moved to the left and right to selectively use one of the cooling water passages 15. However, for example, the connecting pin 34 is used as the center of the flow path. It is also possible to use both of the cooling water passages 15 at the same time by moving the cooling plates 18 and 19 on the center line a of the flow path by moving them to the line a.

The arrangement shape of the filter member 35 is V
The shape is not limited to a U-shape, but is, for example, a U-shape, M
You may comprise in a character shape.

[0031]

As described above, according to the structure of the present invention, the partition wall is arranged inside the tubular body, and the left and right cooling water passages into which the filter members are respectively inserted are provided, and the tubular body is provided. Since the cooling water supply port and the cooling water supply port are formed at both ends of the cooling water, the cooling water flowing through the filter member flows almost straight, and therefore, as in the conventional case, the cooling water flows from the upper side to the lower side by 180 °. Unlike when it changes
The fluid resistance is reduced, and the switching of the cooling water passage is performed by the open / close plate that is swingably provided at each end of the tubular body, so a four-way switching valve is used as in the past. Unlike the configuration described above, the fluid resistance is also reduced. Therefore, as a whole, the fluid resistance, that is, the loss due to the resistance can be remarkably reduced, so that the capacity of the suction pump can be reduced and the filter device itself can be downsized.

[Brief description of drawings]

FIG. 1 is a horizontal cross-sectional view of a tubular portion main body in a filter device according to an embodiment of the present invention.

FIG. 2 is a plan view of a tubular portion main body in the embodiment.

FIG. 3 is a side view of the tubular portion main body in the embodiment.

FIG. 4 is a schematic diagram showing a schematic configuration of a filtering device in a conventional vessel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration device 2 Cooling water piping 11 Cylindrical part main body 12 Supply port 13 Discharge port 14 Partition wall 15 Cooling water passage 16.17 Opening part 18, 19 Open / close plate 31 Open / close tool 35 Filter member 39 Filter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Makihata 5-28-3, Nishikujo 5-chome, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.

Claims (2)

[Claims] 1. A filtering device provided in the middle of a cooling water pipe for supplying cooling water sucked from a water absorption part provided at the bottom of a ship to an engine, wherein a cooling water supply port is formed at one end side. In addition, a cylindrical body having a cooling water discharge port formed at the other end is provided, and partition walls are arranged inside the cylindrical body in a direction along both ends of the cylindrical body. An opening is formed at each end of the partition wall that communicates with each of the left and right cooling water passages, and an open / close plate that opens and closes the left and right openings at each end is swingably provided. ,
The opening and closing plate at each of these end portions is rocked together in either the left or right direction so that one cooling water passage is in use and the other cooling water passage is closed. A cooling water filtering device for a ship, wherein a filter member disposed in each of the cooling water passages is detachably provided. 2. A cooling water filtering device for a ship, characterized in that the corners on each end side of the tubular body of the filtering device according to claim 1 are curved.