JPS5879132A - Water leakage detecting device - Google Patents

Abstract

PURPOSE:To detect the positions of the water leakage, by accurately measuring a shorted current between electrodes, and comparing the value with relationship between a predetermined shorted current and a water leaking position. CONSTITUTION:A conductor having a comparatively large resistivity, e.g. stainless wire or the like, is used for electric wires 2 and 3. Positive electrodes 4a- 4e and negative electrodes 5a-5e for detecting the water leakage are attached to said electric wires. A current detector 10, a position judging device 10', and a water leaking position display 12 are provided between the negative side of a power source and the electric wire 3. When the electrodes 4b and 5b are shorted by the water leakage, the value of the shorted current becomes a specified value in response to the water leaking position. Therefore, when said current is detected by the current detector 10 and sent to the position judging device 10', the water leaking position display 12 is operated and the water leaking position can be detected. In this way, the water leaking position can be detected.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical feature Wf) The present invention relates to a water leakage detection device^, and in particular to a detection design capable of detecting the position of a water addition point.

(Prior Art) Fig. 1 shows an external view 1 of a conventional water leakage detector. The water leakage detector consists of a can-shaped insulator 1 and a part inserted into the insulator 1.
i line 2 and 'r14. Wire 3, electric @L4 and electric +* wrapped around the insulator in a belt shape, 5. Between the two electric wires (power supply 6 and honorable power supply 7 that apply two voltages) J: Ri naru.

The insulator has a length of several meters to hundreds of meters. Install it where you want to detect water leaks. Military, MjJ 2 is frost; connect to the ■ pole of the power source via the 3-wire wire setting device 7 to the ■ camphor of the power source.

Take out the 4 claws 8, cut the wire 1, make a hole in the wire 1, and make an electrical connection with the wire 2. The width of the electrode is approximately 10 or more U. The electrode 5 is installed at a spacing of about 7 from the electrode 4, has a sleeve 9 like the pole 4, and is electrically connected to the electric wire 3.

In other words, the electrode 4 and the electrode 5 form a single illusion, and if there is a short circuit between them due to water, the current will be 1A. Said i! Pairs of poles are installed on insulating materials at intervals of several tens of meters, so water leaks can be detected in a wide range of locations.When a short circuit current flows, the moth detector 7 detects this and sends an alarm. There is something that is determined to be a water leak.

(Disadvantages of the prior art) However, the water leakage detector described above determines that there is a water leakage if a flow exceeding a certain value passes through the alarm device 7 even if a short circuit occurs between the electrodes. Therefore, there is a drawback that it is not possible to determine the water leakage field H.

(Purpose) This invention was made in order to solve the above-mentioned drawbacks, and its purpose is to cut out a water leakage position detection device 1q.

According to this invention, 'ftt, Goma's short-circuit box, fluently exactly iMIIFL, oh Kashal) g Mera 7L /,
7th season Miii 'Rr, (II:, fB: + t14
4'i Comparing the relationship of water positions (from -, high water level 1
i's yōde kata b! 1 will be given.

((Peeling) of the invention (removal) Part 1., see drawings [2.
Fig. 2 is a principle diagram showing an embodiment of the water leak detection device according to the present invention.
j9', 2nd and 3rd grade relative resistance] No. 1) Large conductors, such as stainless steel wire or Nirakuru wire, are used. This frost'1 line (- for water leak detection)
a~4θ.

■Attach electrodes 5α to 5e. A current detector [O is provided between the wire 3 and the wire 3. Furthermore, f2, 'It is composed of a position determiner 11 that determines the position by receiving a signal from a current detector, and a water leak position indicator 12.

(Function) Let's take a moment to consider the concept of space.For example, assume that the electrode 4b and the electrode 5b shown in FIG. 2 are short-circuited due to water leakage. In this case, the short circuit current value v1 is 1 in Fig. 2.
2 (dividing the voltage of the power supply 6 by the series resistance of the wires 2 and 3, which corresponds to 2, is equal to /3. Detect this current with a frost current detector and calculate this current by 1!1 'Judgment device l]
When running to position (i'j judge +1-'C', a position signal with a 1:111 correspondence between the short Wj current coil and the short circuit can 6f is output in advance, so the position signal of If the boiler 12 is operated, the high water level (p%") will be quickly raised 11
Can be detected.

Figure 3 is a diagram showing the relationship between the arrow 17 1Xγ 741. The current when the pole is short-circuited [7] is large, so when it goes from 11 to 12/15, the short-circuit and current decrease. At this time, ■1→
■2...Like Step 5 1- Set the current value f
d: Reason for setting I+" Problem - When the short-circuit box 1 current increases, the short-circuit current increases beyond the set value of +I2. p
, 3H, I2 (2 short circuit positions are determined).

(Inquiry no Yoff1) By using the present invention described above, the following effects can be obtained.

■ Since the detection of water leakage candy resistance is in the valley Sl, part, water () 7
At the time of installation, the rlJI is shortened, and the time between detecting a water leak and temporarily disabling it becomes 0.The time from detecting a water leak to temporarily disabling it is shortened, so the efficiency of the Rizuki of the gags is increased. - to do.

■ When the present invention is used for nuclear power generation, when maintenance personnel discover a high water level (a), 1111 will collapse, reducing damage (two connections Z).

(1,’P:, example) FIG. 4 is a diagram showing an application example of the present invention.

Switching of switch 13 (2 J4 is 141 In 2,
It is a 41 degree sign that the force of 3/ζ is not exceeded and the measurement is carried out from both ends. By doing this, 'jh,
Easy to detect electrode positions far away from #6 (
210, that is, I21 and I21 as shown in Figure 3.
Although the current setting value C of 1jl is relatively small, it is % I
4 and I5 are close to each other by c1, so the judgment for Re and Ha becomes 2. In such a case, change the switch l:3 to supply the illumination to the opposite wt iu++ of the electric wire? ;1, I
Since the difference in the short circuit current between 4 and I5 becomes large, the peak 4
Aiming for i'tl 9j, it becomes easy to get 4 points. frost 4 chant 6
Pregnancy t+W, η, ω may also be used.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a conventional water leakage detector, Fig. 2 is a circuit diagram showing an embodiment of the water leakage detection device 1 related to the non-explosion water leakage detector, and Fig. 3 shows the relationship between the short final current and the short circuit position. Diagram shown in Figure 4i
This is a circuit diagram of the applied product i of "l'11 unprinted seal". 1 Insulator 2...Electric wire 3...Electric wire 4...Glass electrode 5/Negative electrode 1 pole 6-'f4i, bowl 7...Seihoki
8...Positive claw 9...Minus Tsukuda claw 10...
Current detector 11/Position determiner ]2 Leakage position display gain Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] A rod-shaped insulator, a plurality of conductors inserted into the insulator so as to be insulated from each other, and a plurality of conductors wrapped around the insulator to form a solid rectangle and in electrical contact with the conductor. a plurality of pairs of electrodes, a means for applying 'd°C pressure to each of the plurality of 411 bodies 1i1, a current detector connected to each of the 611 conductors 1111, and a current detected by the current detector. a position determiner that converts the value into a position signal depending on the magnitude of the value;
A water leakage detection device comprising a water leakage position indicator connected to the position determination device.