JPH0751439Y2 - Streamer - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a streamer that is connected to a plurality of tips of a towline towed from a hull of an observation ship or the like and has observation equipment built therein. The present invention relates to a streamer in which the repulsive force of a magnet provided on the outer peripheral surface of the streamer is used to prevent the streamers from coming into contact with each other or being entangled with each other.

[Conventional technology]

Conventionally, a streamer including an observation device is known as a device for observing an object existing underwater (undersea) or underwater (undersea). Multiple streamers are connected to the tip of the towline towed from the hull of the observation ship,
It is a mechanism that moves in water following the movement of a hull or the like to observe an object existing in water or at the bottom of the water.

The streamer avoids adverse effects on the observation due to noise generated by the hull itself that tows the streamer during observation, so the tow line connecting the hull and the streamer is very long,
The streamer is towed far away from the hull. Further, the streamer has a structure having flexibility so that the resistance in water becomes small.

Furthermore, a deployer is attached to the tip of the towline to which a plurality of streamers are connected, and each streamer is connected to the towline via this deployer. The adjacent streamers are attached to each other by a predetermined distance by the expander.

[Problems to be solved by the device]

However, as described above, the streamer has a flexible structure and has a certain length, so even if the streamer is attached by the expander at a predetermined distance, There was the inconvenience that the streamers touched each other or became entangled with each other while being towed.

Moreover, since the streamer is located at a position far away from the hull or the like, it is not possible to prevent the streamers from contacting or intertwining with each other by using, for example, a rod from the hull or the like,
In some cases, it was not clear that the streamers were in contact with each other or entangled with each other. As a result, inconveniences such as interruption of observation and breakage of the streamer may occur.

The present invention has been made in view of the above problems to solve the problems, and its purpose is to utilize the repulsive force of the magnets provided on the outer peripheral surface of each streamer. Therefore, it is to provide a streamer capable of preventing streamers from contacting with each other or being entangled with each other, thereby preventing the interruption of the observation and the breakage of the streamer caused thereby.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is a streamer having a plurality of connected to the tip of a tow line towed from a hull or the like and having observation equipment built-in. It is made up of a structure provided for the user.

[Action]

The present invention having the above-mentioned structure operates as follows.

That is, since the magnets are provided on the outer peripheral surface of each streamer with the same magnetic pole facing outward, the streamers repel each other due to the property of the magnets that repel each other, and the strength of the repulsive force is Since it increases in inverse proportion to the square of the distance, the repulsive force becomes stronger as the approaching distance becomes closer, and acts to surely prevent the streamers from contacting with each other or being entangled with each other.

〔Example〕

Hereinafter, the present invention will be described more specifically on the basis of the embodiments shown in the drawings.

Here, FIG. 1 is a plan view of adjacent streamers, and FIG. 2 is a sectional view taken along the line AA in FIG.

In the figure, a streamer 1 is used for observing an object existing underwater (undersea) or underwater (undersea), and has a built-in observation device. The streamer 1 is long and slender, and if it is long, it is about several hundred meters. The streamer 1 is composed of a member having a certain degree of flexibility so that the resistance in water becomes small. A rectifying cable 2 is attached to the rear end of the streamer 1 to prevent the streamer 1 from being extremely bent or twisted in water.

On the outer peripheral surface of each streamer 1, a plurality of magnets 3 having a function of preventing the streamers 1 from coming into contact with each other or being entangled with each other are provided at appropriate intervals in the length direction. Further, in this embodiment, four magnets 3 are provided in the same cross section at equal intervals in the circumferential direction, but the number may be increased or decreased as necessary, and the magnets 3 are annular. May be.

However, all the magnets 3 provided on the outer peripheral surface of each streamer 1 have the same magnetic pole, that is, the N pole is directed to the outside in this embodiment, but the S pole may be directed to the outside. Since the N poles of all the magnets 3 of each streamer 1 are directed outward, a repulsive force of the magnets 3 is generated to prevent the streamers 1 from approaching each other and to prevent the streamers 1 from coming into contact with each other or being entangled with each other.

Although each magnet 3 is integrally attached to the outer peripheral surface of the streamer 1, it may be attachable and detachable.
Particularly, in consideration of storage when not in use, the repulsive force of the magnets 3 becomes an obstacle when the streamers 1 are bundled and stored, and therefore it is preferable that the magnets 3 be detachable from the streamer 1.

Fig. 3 is a side view of the streamer towed to the hull, and Fig. 4
The figure is a schematic enlarged perspective view of a streamer towed on a hull or the like.

A plurality of streamers 1 are connected to the tip of a towline 5 including a conductor towed from the observation vessel 4 as a hull, and move in the water following the movement of the observation vessel 4 to exist in the water or at the bottom of the water. It is a mechanism for observing a moving object.

The towline 5 with a conductor connecting the streamer 1 and the observation ship 4
The cable drum 6 installed at the stern of the observation ship 4 has its proximal end wound up. Towline 5 on cable drum 6
The information observed by the streamer 1 that enters through the conductor of the cable is from the cable drum 6 to the observation room via the towline 5 with the conductor.
It is a mechanism for transmitting to the electronic device 7 of 4a.

An expander 8 is attached to the tip of the towline 5 with a conductor,
In the case of FIG. 4, two neutral buoyancy cables 9 are attached to the expander 8.
Of the neutral buoyancy cable 9 and the streamer 1 is connected to the other end of each neutral buoyancy cable 9. That is, each streamer 1 is connected to the tip of the towline 5 via the neutral buoyancy cable 9 and the expander 8.

FIG. 5 is a plan view of an experiment of the approach distance of the streamer with respect to the flow velocity.

In the experiment, the tips of the two streamers 1 are connected to the support fitting 10 with a space S between them, and the outer circumference of each streamer 1 has a magnet 3 of the same cross section behind the tips connected to the outer periphery of the streamer 1 by a required distance. Four are provided in the circumferential direction. Streamer 1
A rectifying cable 2 is provided at each of the tails.

The approaching distance SScm of Streamer 1 with respect to the flow velocity was as follows.

It should be noted that this invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made without departing from the spirit of this invention.

[Effect of device]

As is clear from the above description, according to the streamer according to the present invention, the magnets are provided on the outer peripheral surface of each streamer with the same magnetic poles facing outward, so that the same magnetic poles are repulsive to each other, and The streamers repel each other, and the strength of the repulsive force increases in inverse proportion to the square of the distance.Therefore, the closer the approach distance is, the stronger the repulsive force is, and it is ensured that the streamers come into contact with each other or become entangled with each other. Can be blocked.

Moreover, the repulsive force of the magnets acting on each streamer acts across the space (underwater), and the space between the magnets acts as an invisible partition member to prevent the streamers from coming into contact with each other or becoming entangled. Since this is achieved, it is possible to eliminate the need to attach a tangible partition member to prevent the streamers from coming into contact with each other, and the structure for preventing the contact can be simplified accordingly.

In this way, even though the magnets are simply provided on the outer peripheral surface of each streamer with the same magnetic poles facing outward, contact and entanglement of each streamer in water can be easily and surely prevented, and It is possible to prevent the interruption of the observation and the damage of the streamer caused by the contact and the entanglement in advance, and it is possible to achieve the smooth execution of the ocean observation. Is.

[Brief description of drawings]

The drawings show an embodiment of a streamer according to the present invention. Fig. 1 is a plan view of adjacent streamers, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, and Fig. 3 is towed to a hull or the like. FIG. 4 is a side view of the streamer, FIG. 4 is a schematic enlarged perspective view of the streamer towed to the hull, and FIG. 5 is a plan view of an experiment of the approach distance of the streamer with respect to the flow velocity. [Explanation of symbols] 1: Streamer, 2: Rectifier cable 3: Magnet, 4: Observation ship 4a: Observation room, 5: Towline 6: Cable drum, 7: Electronic device 8: Deployer, 9: Neutral buoyancy cable 10: Support bracket S: Set interval, SS: Approach distance

Claims (1)

[Scope of utility model registration request] 1. A streamer having a plurality of connected to the tip of a tow line towed from a ship or the like and having a built-in observation device, wherein a magnet is provided on the outer peripheral surface of each streamer with the same magnetic pole facing outward. Streamer to do.