JPS6184523A - Fitting device for echo sounder transducer of ultrasonic flow meter - Google Patents

Abstract

PURPOSE:To fix frame bodies to a pipe to be measured tightly by arranging a clamping member which locks a chain fixing the frame bodies to the pipe to be measured across a spacer member opposite the spacer, and providing a fixing force adjusting means between them. CONSTITUTION:Echo sounder transducers 7A and 7B are provided between two opposite frame plates 40 and 41, and the block type spacer member 42 is fixed to both end parts. The frame bodies are fixed to the pipe 1 to be measured by the chain 50 across the spacer member 42. Both ends of the chain 50 are locked to the clamping plate 51 arranged facing the spacer member. Then, the frame body fixing force adjusting means consists of a screw part and a rotary knob part 5 for applying specific tension to the chain 50 and a pressing part 54.

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 Techniques] 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 Publication No. G.

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, although such conventional examples disclose that the transducer or its entire locking device is attached to the pipe under test using a cable member, in reality, the frame body may be misaligned due to external vibrations, etc. In addition, in the conventional technology in which the mounting strength of the frame body is integrated with the pressing strength against the mounting surface of the ultrasonic transducer, the mounting strength of the frame body is particularly difficult to prevent the propagation of ultrasonic waves. Since this has an important influence, the question of how to attach the frame to the tube to be measured in a strong and easily detachable manner has been posed as an important problem.

The present invention improves the disadvantages of the conventional example, and enables the frame body equipped with the transducer to be firmly fixed to the tube to be measured, and also to avoid positional displacement even in response to external vibrations. The object is to provide a transducer mounting device for a sonic flowmeter.

[Means for solving problems]

Therefore, in the present invention, a transducer is detachably installed between two opposing frame plates.

The ultrasonic flow rate has a structure in which a frame body is provided with block-shaped spacer members fixed to both ends of the frame plate, and this frame body is fixed to the pipe to be measured with a cable member such as a chain via the spacer member portions. In the transmitter/receiver mounting device for the meter, a tightening member for locking the cable member such as the chain is disposed opposite to the spacer member, and a frame member fixing force adjustment means is provided between the tightening member and the spacer member. The aim is to achieve the above objective by adopting a configuration such as being equipped with the following.

[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 5.6 for fixing both ends of the frame 4 to the tube 1 to be measured, and Sound wave transducer 7A, 7B
It consists of two sets of transducer/receiver attachment means 8, 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 frame plate 40.41 is made of a member having an angular cross section, and one of the protruding parts 40A and 4LA (see FIG. 4) is arranged so as to protrude toward the outside as shown in the figure, and the other protruding part 40A and 4LA (see FIG. Sections 40A and 41B are provided facing each other. The other protruding portions 40B, 41
As shown in the figure, a pair of ultrasonic transducers 7A and 7B for transmitting and receiving the waves described above are arranged between the two ultrasonic transducers 7A and 7B.

The -J spacer member 42 of the frame 4 has a V-shaped cutout surface 42A at the portion that abuts against 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 the tubes LA 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.
It is more protruding than the end surface 42C of the cutout surface 42C, and as a result, as shown in FIG. I'm starting to get it.

Further, the spacer members 42 and 43 of the frame body 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 due to the action of the perpendicularity with the side surface caused by the protrusion of the protrusions 42C and 43C, the L-shaped frame plates 40 and 41 are mutually poled to symmetrical positions as shown in FIG. It can be easily attached and the entire frame 4 does not bend. Reference numerals 44 and 45 indicate mounting screws, 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.
and a frame fixing force adjusting means 58 (see FIG. 3). Of these, the frame body fixing force adjusting means 58
A tightening plate 51 that locks both ends of the chain 50, a screw portion 52 that moves the tightening plate 51 upward in FIG. 3 to apply a predetermined tension (frame fixing force) to the chain 50, and this screw portion. 52 as necessary, and a pusher portion 53 fixed to the spacer member 42 side of the threaded portion 52 to press the frame 4 toward the pipe to be measured 1. A member 54 is attached.

A frame locking mechanism 59 is formed as shown in FIG. 1 by this pressing member 54 and the above-described cutout portion 42B of the spacer member 42 shown in FIG. Therefore, since the chain 50 is disposed in the chain guide groove 42D of the spacer member 42 as shown in FIG. 1, the chain 50 can be wound at a relatively accurate right angle without shifting its fixation. It looks like this. Furthermore, since the tightening plate 51 moves up and down by turning the knob 53, it is possible to easily apply a fixed fixing force to the chain 50. As a result, the pressing member 54 is able to uniformly fix the spacer member 42, that is, the frame 4, to the tube 1 to be measured from the center of the spacer member 42 as shown by arrow A in FIG. It has become. Reference numeral 55 indicates a rotation prevention member for the temporary tightening member 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 hook-shaped member for chain mooring. 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.

As shown in FIG. 3, the one transducer fastening means 8 constantly presses the transducers 7A and 7B disposed inside the frame 4 toward the pipe to be measured 1 with a predetermined spring force. A leaf spring member 80, a threaded plate 81 attached to the lower surface of the center of the leaf 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 comprised of a disk-shaped pressing member 84 (see FIG. 1) that presses the ultrasonic transmitter (or receiver) 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 80 for locking 40A and 41A
A, and since 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 screw 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. The screw temporary 81 and the pressing screw part 82 are pressed down in the figure, and thereby the disk-shaped pressing member 8
4 to said one ultrasonic transmitter (or delivery device) 7A
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 anchoring means 8 is disposed in a counterbore hole 70 formed at the upper end of the one ultrasonic wave transmitter (or transfer device) 7A in FIG. It is now set up. As a result, the ultrasonic transmitter (or delivery device) 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 for a long time. It is designed to be able to be maintained continuously. The other wave transmission/reception attachment means 9 is also formed in the same manner. 79 indicates a counterbore hole formed in the wave transmitter (or transfer device).

As shown in FIG. 1, scale plates 4A and 5A are fixed to the upper surfaces of the frame plates 40 and 41 of the frame body 4, and correspondingly, each of the transmitters (or receivers) Vernier scales 4B and 5B are marked on the sides of 7A and 8A, respectively, which indicates whether each transmitter (or receiver) is the same. A, 8A is 1/10 (
[Ryu] It is now possible to position it from the car position. In this case, each of the vernier scales 4B and 5B attached to the side surfaces of the transmitters (or receivers) 7A and 7B has a relatively long line, which makes it possible to device (or receiver)
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 a transfer device).

[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 transfer device (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 flow rate measurement can be performed more efficiently, especially for the pipe 1 to be measured having a large diameter.

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, a transducer is detachably installed between two opposing frame plates, and a frame is formed by fixing block-shaped spacer members to both ends of the frame plates. In an ultrasonic flowmeter transducer mounting device having a structure in which a frame body is provided and the frame body is fixed to a pipe to be measured by a cable member such as a chain through a spacer member portion, the cable member such as the chain is connected. A structure is adopted in which a clamping member is disposed opposite to the spacer member, and a frame member fixing force adjusting means is provided between the clamping member and the spacer member. The ultrasonic flowmeter is an unprecedented and superior device that allows the body to be strongly attached to the pipe to be measured using arbitrary force, and thus maintains the attached position with sufficient resistance to external vibrations. A transducer mounting device can be provided.

[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...Pipe to be measured, 7A, 78--Transducer/receiver, 40, 41-- Frame plate, 42.43-
...Spacer member, 58--Frame fixing force adjustment means, 59--Frame locking mechanism. Patent Applicant Tokyo Keiki Co., Ltd. Figure 2 Procedural Amendment (Method) 1. Display of the case 1982 Patent Application No. 20'7359 2 Title of the invention Ultrasonic flowmeter transducer mounting device 3 Person making the amendment Relationship to the case Patent applicant Address 2 Minami Kamata, Ota-ku, Tokyo Chome 16-46
Name (33B) Tokyo Co., Ltd. Total
Representative Shunsuke Kono 4, agent 16410003) 361-08
196, Subject of correction - Drawing

Claims (2)

[Claims] (1) A transducer is removably installed between two opposing frame plates, and a frame is provided with block-shaped spacer members fixed to both ends of the frame plates. In a transducer mounting device for an ultrasonic flowmeter having a structure in which the body is fixed to a pipe to be measured by a cable member such as a chain through a spacer member portion, the tightening member for locking the cable member such as the chain is A transducer mounting device for an ultrasonic flowmeter, characterized in that the transducer/receiver mounting device for an ultrasonic flowmeter is arranged to face a spacer member, and is equipped with a frame member fixing force adjusting means between the tightening member and the spacer member. (2) A transducer is removably installed between two opposing frame plates, and a frame is provided with block-shaped spacer members fixed to both ends of the frame plates. In a transducer mounting device for an ultrasonic flowmeter having a structure in which the body is fixed to a pipe to be measured by a cable member such as a chain through a spacer member portion, the tightening member for locking the cable member such as the chain is A frame member fixing force adjusting means is disposed opposite to the spacer member and is provided between the tightening member and the spacer member, and the spacer member is placed in contact with the spacer member of the frame member fixing force adjusting means. A transducer mounting device for an ultrasonic flowmeter, characterized in that it is equipped with a frame locking mechanism that engages a member with the frame fixing force adjusting means.