JPS6184522A - Fitting device for echo sounder transducer of ultrasonic flow meter - Google Patents

Abstract

PURPOSE:To vary and adjust the push pressure of an ultrasonic wave echo sounder transducer freely according to the diameter of a pipe to be measured by providing a leaf spring member which presses the echo sounder transducer against the pipe to be measured and also providing a push pressure adjusting means between the leaf spring member and echo sounder transducer. CONSTITUTION:Echo sounder transducers 7A and 7B are provided detachably between two opposite frame plates 40 and 41. A block type spacer member 42 is fixed to both end parts of those frame plates 40 and 41, and the whole of them is fixed to the pipe 1 to be measured by using respective members 50 such as a chain. The leaf spring member 80 presses the echo sounder transducers 7A and 7B against the pipe to be measured, both its ends 80A are engaged with the frame plates 40 and 41, and a raised part and a coupling part are bent on the whole, thereby providing spring effect. Then, the push pressure adjusting means 8 is provided between the leaf spring member 80 and echo sounder transducer, and the push pressure of the ultrasonic wave echo sounder transducer is varied and adjusted freely.

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-mentioned embodiments, only a method for attaching a frame body for a transducer to a pipe to be measured is disclosed, and the fixing means for the transducer itself is simply to constantly apply a constant pressure using a leaf spring. When replacing the transducer, it is necessary to remove the entire frame from the tube to be measured, resulting in poor work efficiency. Since the fixed pressing force of the device cannot be made to correspond to changes, there is a drawback that measurement accuracy is significantly affected by how the frame is fixed.

The present invention improves the disadvantages of the conventional example and provides a transducer attachment for an ultrasonic flowmeter that allows the pressing force of the ultrasonic transducer to be freely changed and adjusted according to the diameter of the pipe to be measured. Its purpose is to provide equipment.

[Means for solving problems]

Therefore, in the present invention, a wave transmitter/receiver is detachably installed between two opposing frame plates, and block-shaped spacer members are fixedly attached to both ends of the frame plates, and the whole is connected by a chain or the like. In a transducer mounting device for an ultrasonic flow needle having a structure in which the transducer is fixed to a pipe to be measured with a cable member, a plate spring member is provided to press the transducer to the pipe to be measured, and both ends of the plate spring member are At the same time as being engaged with the frame plate, a bent portion having a spring effect is formed in a part of the frame plate, and a pressing force adjustment means is provided between the plate spring member and the wave transducer, This aims to achieve the above objective.

[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 1 to be measured, and Sound wave transducer 7A, 7B
two sets of transducer fastening means 8 having the function of attaching and fixing the transducers 7A and adjusting the pressing force of the transducers 7A, 7A;
．． 9.

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 by screws as shown in the figure. One of the protruding parts 40A and 41A (see FIG. 4) is arranged so as to protrude toward the outside as shown in the figure, and the other protruding parts 40A and 41B are arranged to face each other. , this other protrusion 40B, 41
A pair of ultrasonic transducers for transmitting and receiving the waves mentioned above between B? 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. In addition, the frame plate 40.41 has a lower end portion in FIG.
This protrudes beyond the end surface 42C of the cutout surface 42C, and as a result, as shown in FIG. It looks like this.

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 42C 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, 43C, the cursor-shaped frame plates 40, 41 can be easily attached to each other in symmetrical positions as shown in FIG. This prevents the entire structure from bending. 44°4
5 indicates a mounting screw, and 42D and 43D indicate chain guide grooves.

Next, the one frame fixing means 5 includes a chain 50 as a cable member for fixing the frame 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 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. In addition, this chain 50 can be tightened by turning the knob 53, and since the plate 51 moves up and down, it is possible to easily apply a certain fixing force to the spacer member 5.
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 identically to the one frame fixing means 5 described above.
(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 according to the size of the pipe 10 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. It consists of a leaf spring member 80 and a pressing force adjusting means 85 attached to the lower surface of the center of the leaf spring member 80 in FIG.

Of these, the pressing force adjusting means 85 penetrates the screw plate 81 and the center portion of the screw plate 81 to move the screw plate 81 in the vertical direction in the figure and apply a predetermined tension to the leaf spring member 80. A press screw portion 82, an operation knob 83 for rotating the press screw portion 82 as necessary, and a control knob 83 fixed to the tip of the press screw portion 82 to allow the ultrasonic transmitter (or delivery device) 7A to be measured. It is composed of a disc-shaped pressing member 84 (see FIG. 1) that presses against the pipe 1 side. The other transducer attachment means 9 is also formed in exactly the same manner.

Of these, the leaf spring member 80 is made of 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. 4 is in a bent state as a whole, the connecting portion 8.0 This creates a spring effect. 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 plate 81 and the pressing screw part 82 are pushed down in the figure, and as a result, the one ultrasonic wave transmitter (or delivery device) 7A is connected to the pipe to be measured 1 via the disc-shaped pressing part io 84. It is constantly pressed to the side.

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 transfer 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. 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. Reference numeral 79 indicates a countersunk groove formed in the transmitter (or receiver).

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 allows each transmitter (or delivery device) 7A and 8A to be 1/10 (
The position can be determined in m) units. 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 receiver)
Even if 7A and 7B rise or fall depending on 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 above-mentioned frame bodies 4 are connected in a line via a spacer member 44, and a -wave transmitter (or wave receiver) is attached to one side of the frame body 4. A and another wave receiver (or wave transmitter) fixed to the other side of the frame 4. Therefore, in this embodiment, the frame body fixing means 5 described above is mounted at a total of three locations as shown in the figure.The structure and operation of the other parts are the same as in the conventional example described above. It has become.

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 efficiently especially for the large-diameter pipe 1 to be measured.

In each of the above embodiments, for convenience, the upper part of the tube to be measured is
Although the example is shown in which the tubes are closed, most of the tubes are actually installed on the side of the tube to be measured 1 to prevent bubbles and other negative effects. The same applies to this embodiment.

〔Effect of the invention〕

As described above, according to the present invention, a wave transducer is detachably installed between two opposing frame plates, and block-shaped spacer members are fixedly attached to both ends of the frame plates. In a transducer mounting device for an ultrasonic flowmeter in which the entire pipe to be measured is fixed with a cable member such as a chain, a plate spring member is provided to press the transducer against the pipe to be measured, and the plate spring Both ends of the member are engaged with the frame plate, a bent part that has a spring effect is formed in a part of the frame plate, and a pressing force adjustment means is provided between the leaf spring member and the wave transducer. With this configuration, the contact pressure of the ultrasonic transducer can be changed depending on the diameter of the pipe being measured, and this allows the optimal measurement conditions to be always set according to the pipe being measured. We have developed an unprecedented ultrasonic flowmeter transducer mounting device that allows the ultrasonic transducer to be attached and removed while the frame is attached to the pipe to be measured, thereby significantly improving work efficiency. 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------1 tube to be measured, 7A, 7B...- transducer, 40.41.-1--frame plate, 42.43.-11111 spacer member, 50 −−−−−−−Chain,
s o-1-Plate spring member, 85--Pushing force adjustment means. Patent Applicant Tokyo Keiki Co., Ltd. Procedural Amendment (Method) February 1985 lt Date 1, Incident Indication 1988 Patent Application No. 20735g 2, Title of Invention Ultrasonic Flowmeter Transducer/Receiver Mounting Device 3, Relationship with the case of the person making the amendment Patent applicant address 2-16-46 Minami Kamata, Ota-ku, Tokyo
Name (338) Tokyo Co., Ltd.
Representative Shunsuke Kono

Claims (1)

[Claims] (1) A transducer is removably installed between two opposing frame plates, and block-shaped spacer members are fixedly attached to both ends of the frame plates, and the whole is connected to a cable such as a chain. In a transducer mounting device for an ultrasonic flowmeter having a structure in which the transducer is fixed to a pipe to be measured with a strip member, a plate spring member is provided to press the transducer to the pipe to be measured,
Both ends of the leaf spring member are engaged with the frame plate, and a bent part that has a spring effect is formed in a part of the frame plate,
A transducer mounting device for an ultrasonic flowmeter, characterized in that a pressing force adjusting means is provided between the leaf spring member and the transducer.