JPH0376520A - Interceptor for swimming of fishes and shellfishes - Google Patents

Abstract

PURPOSE:To eliminate need of exchanging a submarine electrode by laying the submarine electrode for intercepting swimming of fishes and shellfishes in the seabottom therein, providing a counter electrode forming a pair with the submarine electrode in a position at a sufficient distance above the submarine electrode and connecting the submarine electrode to a negative pole of a DC power source and the counter electrode to a positive pole thereof. CONSTITUTION:A submarine electrode 6 for intercepting swimming of fishes and shellfishes 4 in the seabottom 1 is laid therein and a counter electrode 7 forming a pair with the submarine electrode 6 is installed in a position at a sufficient distance above the submarine electrode 6. The submarine electrode 6 is connected to a negative pole of a DC power source and the counter electrode 7 is connected to a positive pole of the DC power source. As a result, a swimming intercepting barrier for the fishes and shellfishes is locally formed only near the submarine electrode 6 and the fishes and shellfishes in the seabottom 1 are intercepted without applying electrical stimulation to fishes and shellfishes living in areas other than the seabottom 1 and adversely affecting them. Furthermore, exchange of the submarine electrode 6 of the negative pole is not required without causing electrolytic elution thereof. The counter electrode 7 of the positive pole may be exchanged with easy exchange operation.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a fish and shellfish swimming blocking device that electrically blocks swimming of fish and shellfish on the sea bottom that walk or crawl on the seabed.

[Conventional technology]

Conventionally, when the swimming of fish and shellfish on the seabed is limited to a predetermined area such as on a marine farm and the swimming out of that area is cut off, two rod-shaped electrodes (2 )t-
The sea urchins are placed in parallel and an electric voltage is applied to the power supply (3) between both electrodes (2) to form an electric field between both electrodes (2). It blocks the swimming of fish and shellfish (4) that move on the seabed (1), such as abalone. In the figure, (5) is the sea level. [Problem to be solved by the invention] In the conventional case, when the electrode (2) is worn out due to electrolytic action, it is difficult to replace the seed electrode (2) as the water gets deeper, and the t-casing device has to be replaced. In some cases, you may not get 1. There is a problem in that an electric field cannot be formed and the intended purpose of blocking seafood (4) cannot be achieved. The present invention has been made with the above-mentioned points in mind, and an object of the present invention is to provide a fish and shellfish swimming-blocking device that does not require the removal of electrodes on the seabed. [Means for Solving the Problems] In order to solve the above-mentioned problems, the fish and shellfish swimming blocking device of the present invention includes a seabed electrode that cuts off the swimming of fish and shellfish on the seabed, and a seabed electrode that is paired with the seabed electrode. A counter electrode forming a shape is installed at a sufficiently distant position above the seabed electrode, the seabed electrode serves as one pole of the DC power supply, and the counter electrode serves as a small pole of the DC power supply. [Function] In the fish and shellfish fatigue swimming isolation device # of the present invention configured as described above, the counter electrode of the seabed electrode is located at a sufficiently distant position above,
Since the submarine electrode is one pole and the opposite electrode is ± pole,
A barrier is formed locally to block the swimming of fish and shellfish only in the vicinity of the seabed electrode, and fish and shellfish living outside the seafloor are not electrically stimulated (i = 4).Furthermore, electrolytic elution occurs at the negative seafloor electrode. There is no need to convert it, and the replacement work is easy because all you have to do is replace the counter electrode gold of the child species.Furthermore, when the power source is located at sea, the conventional method requires two power supply cables. In contrast, only one cable is required, and the cable length is approximately halved, reducing cable cost and voltage drop due to cable impedance. [Example] An example will be explained with reference to Figures 1 to 5. The basic configuration of the present invention will be explained with reference to FIGS. 3 to 5. (6) shows a seabed electrode laid on the seabed, (7) shows a seabed electrode (6) facing the gold plate. It is an electrode, and a submarine electrode (6
) is installed near the sea at a sufficient distance above or near facilities. In addition, the counter electrode (7) is used to block seafood
C, is not directly between 4. (8) is a DC power supply, the - pole of the power supply (8) is connected to the seabed electrode (6), the child species is connected to the counter electrode (7), and both electrodes (
6). The positional relationship in (7) is arbitrary. Next, the potential distribution between A and A' in FIG.
The solid lines in the figure indicate that both electrodes (61,
(This is the applied voltage between electrodes (71). As is clear from the figure, since both electrodes (6) and (7) are sufficiently far apart, the potential near each electrode (61, (71) changes rapidly. Figure 5 shows the barrier strength distribution between A and A' in Figure 3, and shows a gradual change in the other electrodes.
Since the electric field shown in FIG. 4 is concentrated in the vicinity of (7), a barrier effective for blocking fish and shellfish is formed locally, and there is almost no barrier strength in other areas. That is, the seafood is electrically stimulated only when it passes through the electrode (6), and there is almost no electrical influence at other positions away from the electrode (6). Furthermore, since the submarine electrode (6) is a negative pole, electrolytic elution does not occur, and electrolytic elution occurs only on the counter electrode (7), which is a child species, and the electrode must be replaced only on the counter electrode (7) due to electrode wear. The replacement work is extremely easy. Next, we will discuss the first example using solar cell sound.
This will be explained with reference to the figures and FIG. (9) is the main floating structure, a■ is the sub floating structure connected to the main floating structure (1) by a connecting wire (Ill,
21 is a large number of solar cells arranged on the upper surface of the secondary floating structure S structure αQ, which are connected to the main floating structure (
9) is connected to the control room α4. lJ is a battery charged by solar cell 1121, OQ
is a control power supply connected to the battery (IO) installed in the control room +141, and the same is a power supply cable, and the power supply α11 is directly connected to the gold submarine electrode (6) without an inverter, and the small pole i main It is connected to a counter electrode (7) fixed to the lower surface of the floating structure (9). The submarine electrodes (6) are arranged in two rows to improve the blocking effect. [Effects of the Invention] ] Since the present invention is configured as explained above, it achieves the effects described below. Since the electrode (7) is the negative pole and the counter electrode (7) is the positive pole, a barrier to prevent fish and shellfish from swimming is formed locally only near the seabed electrode (1).
Fish and shellfish 'ff: Blocked, and electrical stimulation is not applied to fish and shellfish living outside the seabed (1), so there is no adverse effect. In addition, no electrolytic elution occurs at the - pole submarine electrode (6).
There is no need to convert it, and it is only necessary to convert the counter electrode (7) of the child species to gold, so the replacement work is easy. Furthermore, if the power source (8) is located at sea, only one power supply cable a7) is required, whereas conventionally two power supply cables a7) are required.
The cable length is almost halved and voltage drop due to cable impedance can be reduced.

[Brief explanation of drawings]

Figures 1 to 5 show examples of the fish and shellfish swimming cutoff device of the present invention, Figure 1 is a perspective view of a part of a specific embodiment, and Figure 2 is an electrical system diagram of Figure 1. , FIG. 3 is a perspective view of the basic configuration, FIGS. 4 and 5 are potential distribution diagrams and barrier strength distribution diagrams of FIG. 3, and FIG. 6 is a front view of the conventional example. (11... Seabed, (4)... Seafood, (6)... Seabed electrode, (7)... Counter electrode, (81, Q61...
power supply.

Claims (1)

[Claims] (1) A seabed electrode that blocks the swimming of fish and shellfish on the seabed is laid on the seabed, a counter electrode that pairs with the seabed electrode is installed at a sufficiently distant position above the seabed electrode, and the seabed electrode is connected to a DC power source. A swimming blocking device for fish and shellfish, in which the opposite electrode is the negative pole of the DC power supply, and the opposite electrode is the positive pole of the DC power source.