JPH0540428Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a detection device for detecting a leakage point in an underwater flat part of an aquarium.

<Prior Art> A detection device for detecting a leakage point in an underwater flat part in an aquarium includes a macro detection device for detecting a leakage portion and a microdetection device for detecting a leakage portion. Generally, after the approximate location of the leak is detected using a macro detection device, the vicinity of the leak is investigated using a micro detection device to detect the leak location.

<Problem that the invention aims to solve> In conventional leak detection for underwater plane parts, a macro detection device detects the leak part, and then a micro detection device detects the leak location, so two methods are required to detect the leak location. In addition to requiring multiple detection devices, the detection rate was also poor.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a leakage detection device that can detect a leakage point in an underwater flat part in an aquarium with a single device.

<Means for Solving the Problems> The configuration of the present invention to achieve the above object is a device for detecting a leakage point on a flat side wall portion in an aquarium, which is capable of approaching and moving away from the surface of the flat portion to be inspected. an inspection box that has an opening that cooperates with the flat surface to define a sealed space; and a leak point detection device that is movable within the inspection box in a plane parallel to the surface of the flat surface to be inspected. The test box is characterized by having a probe needle for the test box, and a microflow meter installed at the water supply port provided in the test box.

<Function> If the opening of the inspection box is brought into close contact with the surface of the flat surface to be inspected, and there is a leak on the surface where the opening of the inspection box is in close contact, the water pressure inside the inspection box will drop and water will flow out from the water supply port. is supplied and the micro flowmeter is activated. When the microflow meter is activated, the probe needle is moved to directly detect the leakage point on the surface of the inspection box that is in close contact with the opening.

<Example> Fig. 1 shows a front view of a leak detection device for a flat surface inside an aquarium according to an embodiment of the present invention, Fig. 2 shows a side view thereof, and Fig. 3 shows a partial cross section of the probe drive unit. plane, 4th
The figure shows a cross-sectional side view of the probe drive section, FIG. 5 shows a cross-sectional side view of the probe drive transmission section, and FIG. 6 shows a cross-section taken along the - line in FIG.

A seal 2 made of a single foam sponge is attached around the opening of the inspection box 1, and the inside of the inspection box 1 is isolated from the inside of the aquarium by the seal 2 coming into close contact with the flat surface inside the aquarium. A probe needle 3 is installed inside the inspection box 1, and the probe needle 3 is placed in the opening plane (XY
The robot is driven toward and away from a plane) and is also moved in a plane parallel to the XY plane. A fiberscope 4, which is a visual inspection device, is installed inside the inspection box 1, and a microflow meter 5, a solenoid valve 6 for protruding the probe needle 3 (Z-axis), and a marker 7 are installed in the waterproof chamber above the inspection box 1. A solenoid valve 9 for the cylinder 8 for ejection is provided. The control cable connection fittings 10a, 10b, the penetration fitting 11 of the fiberscope 4, and the water supply fitting 12 are waterproof sealed and installed on the top surface of the inspection box 1, and the control cable, fiberscope 4, and water supply pipe are attached to the ground. It is connected.

A drive motor 15 is provided inside the waterproof motor cases 13a, 13b via a bracket 14, and the drive motor 15 is driven by gears 16, 17, 1.
8 to the worm wheel 20 attached to the main shaft 19, which drives the gears 21a and 21b. The feed screw portion 19a of the main shaft 19 has a dock 2.
2 are screwed together, and the rotation of the main shaft 19 moves the dock 22 to actuate the stroke end limit switches 23a and 23b at a predetermined position.

By driving the gear 21a, the driving force is transmitted to the spline shaft 25 via the gear 24, and the driving force transmitted to the spline shaft 25 is transmitted to the worm 27 incorporated in the guide 26. The rotation of the worm 27 causes the sprocket 29 to rotate via the worm wheel 28, and the rotation of the sprocket 29 drives the chain 30.

The probe needle guide 31 that holds the probe needle 3 is connected to the joint 3
2a and 32b, the probe guide 31 is connected to a chain 30, and as the chain 30 is driven, the probe guide 31 moves in the left-right (X-axis) direction in FIG. And guide 2
6 is connected to a guide 34 by guide shafts 33a, 33b, and the probe guide 31 is held by the guide shafts 33a, 33b.

Further, the driving force is applied to the gear 3 by driving the gear 21b.
5 to the feed screw 36, and the feed screw 3
A feed nut 37 incorporated in the guide 34 is screwed into the feed nut 6 . By rotation of the feed screw 36, the probe needle 3, probe needle guide 31,
The guides 26 and 34 are moved up and down (Y axis) in FIG.

The main body of the probe 3 has a cylinder rod structure, and the probe 3 is incorporated into a probe guide 31 having a cylinder case structure. The probe needle 3 is reciprocated in the Z-axis direction by operating the solenoid valve 6. A cylinder 8 is provided on the probe guide 31 via a bracket 38, and a marker support fitting 40 is attached to the tip of the cylinder rod 38a of the cylinder 8.
is provided. A marker 7 is attached to the marker support fitting 40, and the marker 7 is attached to the cylinder 8.
It reciprocates in the Z-axis direction by the operation of . Inspection box 1
A fiberscope support fitting 41 is attached to the fiberscope support fitting 41 , and the fiberscope 4 is held on the fiberscope support fitting 41 .
Monitor the marking status.

Next, the operation of the leak detection device having the above configuration will be explained. An inspection box 1 guided into a water tank (not shown) is pressed against a plane to be inspected by a guide device (not shown), and a seal 2 at the opening comes into close contact with the plane to be inspected. If the leak is within the seal 2 of the opening, the water in the inspection box 1 will leak and the water pressure and amount will drop. When the water pressure and amount decrease, water is fed into the inspection box 1 from the water supply fitting 12 via the micro flow meter 5. Micro flow meter 5
By detecting the operating status of the test box 1 using electrical signals, it can be determined that the leakage portion is within the range of the inspection box 1. After that, in order to accurately identify the leakage location, the probe needle 3 is brought close to the surface to be inspected by operating the solenoid valve 6, and the probe needle 3 is inspected by the probe guide 31 by the drive motor 15. Move parallel to the target plane (XY plane). After detecting the leakage point by moving the probe 3, the cylinder 8 is actuated by the operation of the electromagnetic valve 9, and the marker 7 is moved toward the surface to be inspected to mark the leakage point. The guidance status of the inspection box 1, the movement status of the probe needle 3, and the movement status of the marker 7 are remotely visually confirmed by the fiberscope 4. After the inspection is completed, the inspection box 1 is released from the surface to be inspected by the guide device.

Therefore, the above-mentioned leakage detection device can detect a leakage portion (macro detection) and a leakage location (microdetection) in an underwater plane in an aquarium with a single device.

<Effects of the invention> The leak detection device for a flat surface inside a water tank of the present invention has a micro flowmeter installed at the water supply port of the inspection box whose opening can be brought into close contact with the surface of the flat surface to be inspected, and a movable probe needle. Since it is installed in the inspection box, it is possible to detect the leakage part and the leakage point in the underwater flat part in the aquarium with one detection device. As a result, it is possible to improve the efficiency of the work of detecting a leakage point in an underwater flat part in an aquarium.

[Brief explanation of the drawing]

FIG. 1 is a front view of a water tank internal plane leak detection device according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a partially sectional plan view of the probe drive unit, and FIG.
The figure is a cross-sectional side view of the probe drive section, FIG. 5 is a cross-sectional side view of the probe drive transmission section, and FIG.
It is a sectional view taken along the - line in the figure. In the drawing, 1 is an inspection box, 2 is a seal, 3 is a probe needle, 5 is a micro flow meter, 15 is a drive motor, 3
1 is a probe needle guide.

Claims (1)

[Scope of utility model registration request] An inspection box that detects a leakage point in a flat side wall in an aquarium, which has an opening that can approach and move away from the flat surface to be inspected, and cooperates with the flat surface to define a sealed space. A probe needle for detecting leakage points is installed in the inspection box so as to be movable in a plane parallel to the surface of the flat surface to be inspected, and a probe needle is installed in the water supply port of the inspection box. A leakage detection device for a plane inside a water tank, characterized by having a flow meter.