JPH0653396U - Underwater towed vehicle for spraying functional agents - Google Patents

Abstract

(57) [Abstract] [Purpose] An underwater towed vehicle for spraying underwater functional agents that can distribute functional agents labor-savingly and quickly in the sea at a desired depth over a small range to a large range. provide. [Composition] Suspending an underwater towed vehicle with bilaterally symmetrical hydrofoils via a tow cable whose upper end is connected to the towed ship and whose lower end extends into the water, and towed the underwater towed vehicle at the desired depth. In the underwater towed vehicle, the hose 5 extending along the towing cable 5 and the both hydrofoils 4 are provided.
Left and right 1 extending in the wing length direction of the hose 5 and communicating with the lower end of the hose 5
The pair of liquid feed pipes 2 and 2 are provided with a plurality of functional agent discharge holes 1 formed at equal intervals. It was made to squirt and diffuse into the seawater from.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an underwater towed vehicle for spraying a functional agent.

[0002]

[Prior art]

 Examples of means for spreading the substance to the natural waters include spraying bait in aquaculture farms, and spraying lime for the purpose of reforming spoiled sludge deposited on the seabed. Recently, it has been considered that a specific functional agent is sprayed in a desired water area for an unprecedented purpose such as spraying a chemical solution for the purpose of improving the deteriorated water quality. The functional agent here means a solution or a powder. It is common to use a submersible pipe as a means to disperse and disperse a solution over a vast area such as a natural water area.For example, a spray pipe installed side by side at the bottom of a ship can be used to disperse a solution such as a solution. It is easy to evenly distribute the sprayed material near the water surface.

[0003]

[Problems to be solved by the device]

 By the way, when a solution or powder as a functional agent is put into a water body, it is important that the functional agent is evenly distributed in water in order to make its effect effective. There are quite a few cases where you want to select a depth to achieve a uniform distribution of the scattered material. For example, it is known that red tide plankton may drift in a specific depth before the outbreak. It is also known that spores before the germination of red tide plankton exist in large quantities on the sea floor. Red tide sterilization is a bacterium that lives in natural waters that breed using the constituents of red tide plankton as food. Therefore, if artificially large-scale cultivation of this is possible and the required amount can be uniformly distributed only in a predetermined water depth area where spores before germination of red tide plankton or red tide plankton exist, red tide damage will occur. It is possible to prevent it efficiently and it is very useful for fishery. However, as described above, it is not possible at present to uniformly distribute and diffuse the functional agent in a specific depth zone below the water surface.

The present invention has been proposed in view of the above circumstances, and an object thereof is to provide an underwater towed body for spraying underwater functional agents, which can uniformly distribute the functional agents at a desired depth. Target

[0005]

[Means for Solving the Problems]

 To this end, the present invention suspends an underwater towed vehicle having symmetrical hydrofoils via a towed cable, the upper end of which is connected to the towed ship and the lower end of which extends into the water. In a submersible towed vehicle that is towed at a depth of, a hose extending along the towing cable and a pair of left and right liquid feed pipes extending in the spanwise direction of both hydrofoils and communicating with the lower ends of the hose. A plurality of functional agent discharge holes formed at intervals, and the functional agent pressure-fed through the hose is jetted and diffused into the seawater from the plurality of discharge holes of each liquid feed pipe. To do.

[0006]

[Action]

 With such a configuration, the underwater towed vehicle can change the water depth at which it travels by changing its navigation speed and the length of the towline. It is also possible to change the running water depth by controlling the elevation angle of the hydrofoil by a drive unit inside the towed body.By this means, the underwater towed body will always be at a predetermined level even if the towing speed changes. The dive depth can be easily maintained and the dive depth can be changed quickly. After spraying, the functional agent sprayed from the opening on the wing surface of such an underwater towed vehicle is agitated by the track vortex of the underwater towed vehicle, and is evenly distributed in the depth range where the underwater towed vehicle is navigating. . Since the underwater towed vehicle according to the present invention can easily adjust the diving depth, it can be sprayed at any depth. Therefore, it is also possible to spray a fixed amount of solution over a wide area or a narrow area along the gently undulating sea bottom.

[0007]

EXAMPLE An example in which the present invention is applied to spraying a red tide inhibitor will be described with reference to the drawings. FIG. 1 is an overall perspective view thereof, FIG. 2 is a perspective view showing the hydrofoil of FIG. 1, and FIG. 5 is a cross-sectional view of the hydrofoil of FIG. 4, FIG. 4 is a perspective view of the hydrofoil showing the modification of FIG. 2, and FIG. 5 is a cross-sectional view of FIG.

First, in FIG. 1 to FIG. 3, 1 is a liquid supply pipe 2 extending in the blade length direction along the lower surface of each hydrofoil which is symmetrically projected to the left and right of the body 6 in the horizontal direction at equal intervals. There are a plurality of small-diameter discharge holes drilled downward, and slits 3 are formed on the lower surface of the hydrofoil 4 at the discharge hole 1 in parallel with the direction of the body 6 and symmetrically expanding in the front-rear direction. It is recessed. Reference numeral 5 denotes a towing cable and a liquid supply hose (hereinafter referred to as a towing cable). The lower end of the towing cable 5 is attached to the front upper end of the body 6 through a joint 7 and a stay 8, and the lower end opening is along the centerline of the body 6. It extends to the left and right and then communicates with the branch liquid supply pipe 2 that branches left and right. Here, the body 6 and the pair of left and right hydrofoils 4, 4 form an underwater towed vehicle 10.

In such a structure, when the upper end of the towing cable 5 is pulled by a towing ship (not shown), the underwater towed vehicle 10 is towed underwater of a certain depth determined by the towing speed and the length of the towing cable. Become. Here, when the red tide prevention liquid is supplied to the towing cable 5 by a pump on the towing vessel, the red tide prevention liquid is jetted downward from each of the discharge holes 1 of the pair of left and right liquid feed pipes of the towed body, and into the external seawater. It diffuses uniformly within a constant depth of water.

The left and right hydrofoils 4, 4 are rotatably supported at appropriate angles around the central axis of the wing projecting laterally with respect to the centerline of the fuselage, and via an actuator (not shown). The elevation angle can be changed by remote control from a towed ship. Instead of rotating the hydrofoil itself, the elevation angle of the flap attached to it may be variable. According to such a variable-elevation hydrofoil, by controlling the elevation angle of the hydrofoil, the towing depth of the underwater towed vehicle can be kept constant despite the change in the towing speed.

As shown in FIGS. 4 to 5, in the hydrofoil, instead of forming the slit 3 in each small hole 1, a common horizontal continuous slit is formed in the lower surface of the hydrofoil 4 in the lateral direction. At the same time, instead of the front-rear symmetrical type shown in FIGS. 2 and 3, the slit has an asymmetrical type in which the slit expands in a direction directing an intermediate direction between the front and the bottom. Even in such a hydrofoil, the same operational effect as that of the hydrofoil shown in FIGS. 2 to 3 can be obtained. The small holes may be arranged at the front end or the rear end of the upper surface of the hydrofoil.

[0012]

[Effect of device]

 The underwater towed vehicle having such a structure has the following effects. (1) The functional agent can be uniformly distributed and diffused in water at a predetermined water depth. (2) The functional agent can be distributed and diffused over a small range to a wide range in a labor-saving and labor-saving manner.

In short, according to the present invention, an underwater towed body having bilaterally symmetrical hydrofoils is suspended via a tow cable whose upper end is connected to the towed ship and whose lower end extends into the water, and the underwater towed ship is driven by the towed ship. An underwater towed body that is towed at a desired depth. A hose extending along the towing cable and a pair of left and right liquid feed pipes extending in the wing length direction of both hydrofoils and communicating with the lower ends of the hoses. By providing a plurality of functional agent discharge holes formed at equal intervals, the functional agent pumped through the hose is jetted and diffused into the seawater from the plurality of discharge holes of each liquid feeding pipe. The present invention is extremely useful industrially because it provides an underwater towed vehicle for spraying underwater functional agents, which can evenly distribute the functional agents at a desired depth.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

2 is a perspective view showing the hydrofoil of FIG. 1. FIG.

3 is a cross-sectional view of the hydrofoil of FIG.

FIG. 4 is a perspective view showing a modification of the hydrofoil of FIG.

5 is a cross-sectional view of FIG.

[Explanation of symbols]

 1 Discharge hole 2 Liquid feed pipe 3 Slit 4 Hydrofoil 5 Towing cable and liquid supply hose (towing cable) 6 Body 7 Pipe joint 8 Stay 10 Underwater towing body a Towing body advancing direction

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Wataru Koderayama 3-20-8 Aobadai, Dazaifu City, Fukuoka Prefecture

Claims (1)

[Scope of utility model registration request] 1. An underwater towed body having bilaterally symmetrical hydrofoil is suspended through a tow cable whose upper end is connected to a towed vessel and whose lower end extends into the water, and the underwater vehicle is driven by the towed boat to a desired depth. In an underwater towed vehicle, the hose extending along the towing cable and the pair of left and right feed pipes extending in the spanwise direction of the hydrofoils and communicating with the lower ends of the hose are drilled at equal intervals. A plurality of functional agent discharge holes provided, wherein the functional agent pressure-fed through the hose is ejected and diffused into seawater from the plurality of discharge holes of each liquid transfer pipe. Underwater towed vehicle for spraying.