JPS6184521A - Fitting device for echo sounder transducer of ultrasonic flow meter - Google Patents

Abstract

PURPOSE:To allow one fitting device to cover sufficiently many pipes to be measured which differ in diameter by forming a V-shaped cut surface in the surface of a spacer member which contacts a pipe to be measured. CONSTITUTION:The ultrasonic flow meter equipped with an echo sounder transducer detachably is provided at the center part between a couple of facing frame plates 40 and 41. Then, a block type space member 42 is provided at both end parts of the two frame plates 40 and 41. This spacer member 42 has the V-shaped cut surface 42A at the part which abuts on the pipes to be measured, and abuts on the object pipes 1A and 1B which have relatively small diameters. Further, the frame plates 40 and 41 have their lower end parts projected from the end surface of said V-shaped cut surface 42A, and consequently it abuts effectively on even relatively large pipes 1C and 1D to be measured.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a transducer/receiver mounting device for an ultrasonic flowmeter, and in particular, the present invention relates to a transducer/receiver mounting device for an ultrasonic flowmeter, and in particular, the entire device is fixed to the outer surface of a pipe to be measured using a chain or other cable member. The present invention also relates to an ultrasonic flowmeter transducer mounting device for fixedly mounting two ultrasonic transducers for transmission and reception.

[Conventional technology]

Conventional ultrasonic flowmeter transducer mounting devices are disclosed in, for example, Japanese Utility Model Publication No. 50-6857 and Japanese Utility Model Application Publication No. 59-41724.
There are various types as disclosed in the above publication.

All of these disclose methods for efficiently attaching a transducer attachment device to a large-diameter pipe, and have achieved some results in this respect.

[Problem that the invention seeks to solve]

However, in each of the above conventional examples, based on the logic that large also serves as small, as mentioned above, the measurement tube has a relatively large diameter. There is an inconvenience that the transducer becomes unstable and causes malfunction, and in addition, it is necessary to use a single unit to handle many types of pipes from small to medium diameters. It is almost impossible to do so, and therefore, in such a case, it is troublesome that a plurality of transducer mounting devices must always be prepared.

The present invention improves the disadvantages of the conventional example, and in particular, a single mounting device can be used for a large number of pipes to be measured with different diameters, from small diameter pipes to medium diameter pipes, or from medium diameter pipes to large diameter pipes. The object of the present invention is to provide a transducer mounting device for an ultrasonic flowmeter that can sufficiently cover the area.

[Means for solving problems]

Therefore, in the present invention, a block-shaped spacer member is provided at both ends of two opposing frame plates, and a transducer is detachably installed in the center of each frame plate. In the transducer mounting device, a configuration is employed in which a cutout surface in the shape of a 7 is formed on the surface of each of the spacer members that comes into contact with the tube to be measured, thereby attempting to achieve the above object.

[First Embodiment of the Invention] Hereinafter, a first embodiment of the present invention will be described based on FIGS. 1 to 4.

In these figures, 1 indicates a pipe to be measured, 2 indicates a liquid such as water flowing inside the pipe to be measured 1 (see Fig. 4), and 3 indicates a transducer mounting device of an ultrasonic flowmeter. show.

The transducer mounting device 3 includes a frame 4, two sets of frame fixing means 5 and 6 for fixing both ends of the frame 4 to the tube to be measured l, and Sound wave transducer? A, 7B
It is composed of two sets of transducer/receiver attachment means 8 and 9 for attaching and fixing the transducer.

Among these, the frame body 4 includes a pair of frame plates 40.
41, and spacer members 42, 43 fixed to both ends of each frame plate 40, 41 with screws as shown. The frames 1tFi40, 41 are made of members having a cross-section with an angular shape, and one of the protrusions 40A, 41A (
(see FIG. 4) are disposed so as to protrude toward the outside as shown in the figure, and the other protrusions 4OA and 41B are provided facing each other. And this other protrusion 40B,
A pair of ultrasonic transducers for transmitting and receiving the waves mentioned above between the 41B? A and 7B are arranged as shown in the figure.

One of the spacer members 42 of the frame 4 has a V-shaped cut surface 42A at the portion that comes into contact with the tube to be measured 1, which allows the tube to be measured to be relatively small in diameter as shown in FIG. The above-mentioned transducer 7 is in effective contact with IA and IB.
A and 7B can be fixed. The other spacer member 43 (see FIG. 3) is formed in exactly the same manner. Further, the lower end portion of the frame plate 40.41 in FIG.
As shown in FIG. I'm starting to get it.

Further, the spacer members 42 and 43 of the frame 4 have a relatively wide cutout portion 42B on the end surface opposite to the V-shaped cutout surfaces 42A and 43A, as shown in the figure.

43B, and the frame body fixing means 5.6 is disposed at this portion, and is adapted to be attached to the tube to be measured 1 as described later. Furthermore, the spacer members 42, 43
A protrusion 42G extending at right angles to the left and right at the upper end in the figure.
, 43C, and by the action of these protrusions 42C and 43C, the cursor-shaped frame plates 40 and 41 are arranged in symmetrical positions with respect to each other as shown in FIG. The entire structure is designed to prevent bending.44°4
5 indicates a mounting screw, and 42D and 43D indicate chain guide grooves.

Next, the one frame body fixing means 5 includes a chain 50 as a cable member for fixing the frame body 4 to the tube 1 to be measured.
The plate 5 is used to tighten both ends of the chain 50.
1, this tightening is done by moving the plate 51 upward in FIG. It is composed of a knob portion 53 that presses the screw portion 52, and a pressing member 54 that is fixed to the spacer member 42 side of the threaded portion 52 and presses the frame body 4 toward the tube to be measured 1, and this pressing member 54 is shown in FIG. As shown in FIG.
It is arranged in the cutout part 42B of. Therefore, since the chain 50 is disposed on the chain guide $42D of the spacer member 42 as shown in FIG. In addition, the chain 50 can be tightened by turning the knob 53, and since the plate 51 moves up and down, a constant fixing force can be easily applied.
2, the pressing member 54 always pushes the spacer member 42, that is, the frame 4, evenly into the tube to be measured from the center of the spacer member 42 as shown by arrow A in FIG. It can be fixed to the first side. Reference numeral 55 indicates a member for preventing rotation of the plate 51.

The other frame fixing means 6 is also formed exactly the same as the one frame fixing means 5 described above. 56°57 (4th
(see figure) shows a key-shaped member for locking the chain. Therefore, the length of the chain 50 to be used can be freely set depending on the size of the pipe 1 to be measured. Furthermore, the wide cutouts 42B and 43B formed at the upper ends of the spacer members 42 and 43 in FIG. 1 may be circular counterbore grooves.

The one transducer fastening means 8 always presses the transducers TA and 7B disposed inside the frame 4 toward the tube to be measured 1 with a predetermined spring force, as shown in FIG. A plate spring member 80 that is attached to the temporary spring member 80, a threaded plate 81 attached to the lower surface of the center of the temporary spring member 80 in FIG. A press screw part 82 that moves and applies a predetermined tension to the leaf spring member 80, an operating knob 83 that rotates the press screw part 82 as necessary, and a control knob 83 that is fixed to the tip of the press screw part 82. It is composed of a disk-shaped pressing member 84 (see FIG. 1) that presses the ultrasonic wave transmitter (or delivery device) 7A toward the tube 1 to be measured. The other transducer attachment means 9 is also formed in exactly the same manner.

Of these, the leaf spring member 80 is made of a stainless steel spring material and is bent into a trapezoidal shape as shown in FIG. U-shaped locking part 8 for locking parts 40A and 41A
0A, and the connecting portion 80C of this U-shaped locking portion 80A with the rising portion 80B in FIG. It's starting to happen. Therefore, when the operation knob 83 is rotated clockwise, for example, the tension plate 81 moves upward and pushes up the center portion of the leaf spring member 80, and as a result, the leaf spring member 80 is moved by the reaction force. This causes the screw plate 81 and the pressing screw part 82 to be pushed down in the figure, and as a result, the one ultrasonic wave transmitter (or delivery device) 7 is pushed down via the disc-shaped pressing member 84.
A is always pressed toward the tube 1 to be measured.

Further, the threaded plate 81 of the transducer/receiver attaching means 8 is bent slightly upward at both end portions along the leaf spring member 80 (see FIG. 3), and this bent end portion 81A is locked by the leaf spring member 80 to prevent its rotation. In this case, the bent end portion 81A may be partially bent at both ends.

Further, the disc-shaped pressing member 84 of the transducer/receiver engaging means 8 is inserted into the counterbore hole 70 formed at the upper end of the one ultrasonic transmitter (or receiver) 7A in FIG. It is now set up. As a result, the ultrasonic transmitter (or receiver) 7A is always evenly pressed from its center toward the center of the tube to be measured 1, and therefore always maintains the best measurement conditions. It is designed to be able to be maintained continuously over time. The other wave transmitting/receiving coupling means 9 is formed in exactly the same manner. 79 indicates a counterbore hole formed in the transmitter (or transfer device).

As shown in FIG. 1, scale plates 4A and 5A are fixed to the upper surface of the frame plates 40 and 41 of the frame body 4, and each of the transmitters (or transfer devices) corresponds to the scale plates 4A and 5A. Vernier scales 4B and 5B are marked on the sides of A and 8A, respectively, so that each transmitter (or delivery device) 7A and 8A is 1/10 (
It is possible to locate the crane in units of cranes. In this case, each of the vernier scales 4B and 5B attached to the side surfaces of the transmitters (or transfer devices) 7A and 7B has a relatively long line length, which makes the transmitters ( or delivery device)
Even if 7A and 7B rise or fall due to the size of the diameter of the tube 1 to be measured, this can be adequately coped with.

71A and 71B each indicate a coaxial cable for a transmitter (or receiver).

[Second example] Next, a second embodiment will be described based on FIG. 5.

In this embodiment, two sets of the frame bodies 4 described above are connected in a line via a spacer member 44, and a - transmitter (or receiver) 7A is attached to one side of the frame body 4. , and another wave receiver (or wave transmitter) is fixed to the other side of the frame 4. For this reason, in this embodiment, the frame body fixing means 5 described above are provided at a total of three locations as shown in the figure. The configuration and operation of other parts are the same as in the conventional example described above.

Even in this case, in addition to functioning in the same manner as the first embodiment described above, there is an advantage that meteor measurements can be carried out efficiently especially for the large-diameter tube 1 to be measured.

In each of the above embodiments, the case where the device is installed at the top of the tube to be measured is illustrated for convenience, but in reality, most of the devices are installed at the side of the tube to be measured 1 to prevent air bubbles and other negative effects. It has become. The same applies to this embodiment.

〔Effect of the invention〕

As described above, according to the present invention, block-shaped spacer members are provided at both ends of two opposing frame plates, and a transducer is detachably installed in the center of each frame plate. In the transducer/receiver mounting device for a sonic flowmeter, we have adopted a configuration in which a V-shaped cut surface is formed on the surface of each spacer member that comes into contact with the pipe to be measured, so that it can be used for a variety of different diameters over a relatively wide range. It is possible to provide a transducer/receiver mounting device for an ultrasonic flowmeter which is unprecedented and superior in that it is possible to effectively measure the flow rate of a pipe having a size of

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing the first embodiment of the present invention, FIG. 2 is an explanatory view showing the function of the spacer member in the measured tube portion of FIG. 1, and FIG. 3 is a front view of FIG. 1. 4 is a left side view of FIG. 3, and FIG. 5 is a front view showing the second embodiment. 1-1111・-Tube to be measured, ? A, 7 B---
---Transducer/receiver, 40.41-----One frame plate, 4
2, 43-----Spacer member, 42
A, 43 A---V-shaped resection surface. Procedural amendment (method) February 1985/(Day 1, Case indication 1988 Patent Application No. 21) '7B57 No. 2, Title of invention Transducer/receiver mounting device 3 for ultrasonic flowmeter, Make amendments Relationship with the patent case Patent applicant address 2-16-46 Minami Kamata, Ota-ku, Tokyo
Name (338) Tokyo Co., Ltd.
Representative Shunsuke Kono

Claims (2)

[Claims] (1) An ultrasonic flowmeter has a structure in which a block-shaped spacer member is provided at both ends of two opposing frame plates, and a transducer is detachably installed in the center of each frame plate. 1. A transducer/receiver mounting device for an ultrasonic flowmeter, characterized in that a V-shaped cutout surface is formed on the surface of each spacer member that contacts the tube to be measured. (2) An ultrasonic flowmeter has a structure in which a block-shaped spacer member is provided at both ends of two opposing frame plates, and a transducer is detachably installed in the center of each frame plate for transmitting and receiving waves. In the device mounting device, a V-shaped cut surface is formed on the surface of each spacer member that comes into contact with the tube to be measured, and the end of each frame plate on the tube to be measured side is formed in the V-shaped section of each spacer. A transducer mounting device for an ultrasonic flowmeter, characterized in that it protrudes beyond the end face.