JPS61218938A - Ultrasonic probe device - Google Patents

Abstract

PURPOSE:To suppress the irregular flow of water and to obtain a stable contact medium by dividing the water chamber of a probe holder into the 1st and 2nd water chambers and providing a bulkhead for partitioning the 1st and 2nd water chambers and a taper-shaped block. CONSTITUTION:The water supplied to a ultrasonic probe device flows in the direction of an arrow (c), and remains in the 2nd water chamber 7. As the water is supplied as it is, it flows to the 1st water chamber from the upper clearance of the bulkhead 8, goes in the direction of an arrow (d) along the taper-like shape of the block 9 and flows out in the direction of an arrow (e). If the amount of supply water from a water supply hole 6 is larger than amount of water flowing out in the direction of the arrow (e), it fills the 1st water chamber, and becomes the contact medium to bring the ultrasonic probe 1 into contact with a subject to be tested 4 in terms of ultrasonic. The water supplied in such a way is provisionally built up in a large capacity water chamber, and only the overflowing water is flowed along the taper-like shape of the block 9 from the upward slight clearance, whereby the flow will not deviate and the stable contact medium can be available.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to, for example, an ultrasonic probe device.

More specifically, this paper proposes an improved method for supplying a fluid used as a couplant for ultrasonic probes, such as water.

[Conventional technology]

FIG. 3 is a sectional view showing a conventional ultrasonic probe device.

FIG. 4 is a plan view thereof. In the figure, (11 is an ultrasonic probe, (2) is a probe holder that holds the ultrasonic probe (1), (3) is a shoe that comes into contact with the test material (4), and (5) is a probe holder that holds the ultrasonic probe (1).
) is a water chamber that stores water that serves as a couplant for ultrasonic contact between the ultrasonic probe (1) and the test material (4); (6)
is the water supply hole that supplies the water.

The conventional ultrasonic probe device is composed of 5 and 2 as described above.
For example, water that enters from the water supply hole (6) is transferred to the probe holder (2).
The water fills the water chamber (5) and flows out in the direction indicated by the arrow while acting as a couplant.

[Problem that the invention seeks to solve]

In conventional ultrasonic probe devices such as those mentioned above, water is stored in a water chamber (
5) ″f: A large amount of flow rate is required to keep the water from filling up, so it is necessary to forcefully flow the water from the water supply hole (6) in the direction of arrow a.

Since the ultrasonic probe (1) held in the probe holder (2) K collides with the convex part, it creates turbulent flow in the water chamber (5), which causes air bubbles to be drawn in and impede the flaw detection performance. there were.

This idea was devised to solve these problems, and it is an ultrasonic detector that prevents turbulence and can obtain a stable couplant free of bubbles even when the amount and pressure of water to be supplied fluctuates. The purpose is to obtain a feeler device.

[Means for solving problems]

The ultrasonic probe device according to the present invention has a water chamber divided into a first and a second water chamber, a wall separating the first and second water chambers, and a first water chamber.
A tapered block is provided in the water chamber.

[Effect]

In this invention, the supplied water temporarily accumulates in the second water chamber, and flows over the entire length of the water chamber over the wall to the first water chamber, and the water that flows down is formed into a tabular block. 8. Suppress the turbulent flow of water from the sea urchin.

〔Example〕

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the device shown in FIG. 1, and (1) to (6) are completely the same as the conventional device described above. (7) is the second water chamber provided in the probe holder (2), and (8) is the first water chamber (5).
) and the second water chamber (7), the wall (9) is a tapered block.

In the ultrasonic probe device configured as described above, the supplied water flows in the direction of arrow C and accumulates in the second water chamber (7). If water continues to be supplied, it will flow out from the gap above the wall (8) into the first water chamber, flow along the tapered shape of the block (9) in the direction of arrow d, and flow out in the direction of arrow e. If the amount of water supplied from the water supply hole (6) is larger than the amount flowing out from the direction of arrow e, the first water chamber is filled and the ultrasonic probe (1) and the material to be examined (4) are exposed to ultrasonic waves. It serves as a couplant for contacting the target.

In Tonoyo 5, the supplied water is temporarily stored in a large volume water chamber, and the overflow is passed through a slight slit-like gap above the wall (8) into the tapered shape of the block (9) along the line shown in the figure. Since the flow is allowed to flow, it is possible to obtain a stable couplant without turbulent flow and no generation of bubbles or the like. In addition, even if the pressure or flow rate of the supplied water fluctuates, it is alleviated in the second water chamber, so
It does not directly affect the first water chamber, which greatly affects flaw detection performance.

〔Effect of the invention〕

As explained above, this invention can divide the water chamber of the probe holder into the first and second water chambers by simply providing a wall separating the first and second water chambers and a tapered block. The structure suppresses water turbulence.

It has the effect of obtaining a stable couplant.

[Brief explanation of the drawing]

FIG. 2 is a sectional view showing an embodiment of the present invention, FIG. 1 is a plan view thereof, FIG. 3 is a sectional view showing a conventional ultrasonic probe device, and FIG. 4 is a plan view thereof. In the figure (11 is the ultrasonic probe, (2) is the probe holder, (4) is the test material, (5) is the first water chamber, (7) is the second water chamber, (8) is the ) is a wall, and (9) is a block.

Claims (1)

[Claims] In order to inspect the test material, an ultrasonic probe is installed facing the test material, and the ultrasonic probe is installed so as to accommodate at least the surface facing the test material, and the inner surface is a first water chamber having a tapered shape; a second water chamber provided adjacent to the first water chamber for supplying water to the first water chamber; It is composed of a wall separating the water chamber and the second water chamber, and a water supply hole that supplies water to the second water chamber, and after the water supplied from the water supply hole passes through the second water chamber, An ultrasonic probe device characterized in that water is guided over the wall into a first water chamber and filled between the specimen and the ultrasonic probe along the tapered inner surface.