JPH07229964A - Bubble visualizer - Google Patents

Abstract

PURPOSE:To realize an apparatus which males possible the displaying of not only the section of bubbles in a gas flowing through a piping but also the whole. CONSTITUTION:This apparatus is provided with first and second ultrasonic sensors 1 and 2 which are arranged in plurality in rows one per each and at a fixed interval between the rows in the circumferential direction of the external surface of a piping 11, first and second transmitter/receivers 7 and 8 to which the first and second ultrasonic sensors 1 and 2 are connected through first and second ultrasonic transmission/reception switches 5 and 6 and an image synthetic processor 9 which is connected to the first and second ultrasonic transmitter/receivers 7 and 8 and provided with a display device 10. An ultrasonic reflection beam reflecting on the bubbles 12 is received with the ultrasonic sensors 1 and 2 arranged in the two rows to increase a visualization data of the bubbles expressly thereby making possible the displaying of not only the section of the bubbles 12 but also the whole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bubble imaging device applied to the visualization of bubbles in a liquid in a pipe.

[0002]

2. Description of the Related Art In a conventional bubble imaging apparatus for imaging bubbles in a liquid in a pipe, a plurality of ultrasonic sensors 21 are arranged along the outer circumference of the pipe 11 as shown in FIGS. The ultrasonic sensors 21 are arranged in one row.
The ultrasonic transmission beam 41 transmitted by the ultrasonic sensor 21 is arranged at symmetrical positions with the axial center of the pipe 11 as a center point.
It was a vertical type that was received mainly.

The ultrasonic sensors 21 are connected to an ultrasonic transmitter / receiver 24 via an ultrasonic transmission / reception switching device 23, and the ultrasonic waves received by the ultrasonic sensors 21 are transferred to the ultrasonic transmission / reception switching device. The ultrasonic wave data is input to the ultrasonic wave transmitter / receiver 24 via 23, and the image data is input from the same transmitter / receiver 24 to the image synthesizing processing device 25, and the images are synthesized and displayed on the display device 10.

[0004]

In the conventional bubble imaging apparatus, the ultrasonic transmission beam emitted by the ultrasonic sensor into the pipe has a narrow divergence, and the bubbles are present in the ultrasonic transmission beam for a short time. Although the imaged bubble has a good display of its cross section, there is a problem that the entire display cannot be performed because the imaged information is insufficient. The present invention is intended to solve the above problems.

[0005]

The bubble imaging apparatus of the present invention comprises a plurality of first ultrasonic sensors arranged in a row in the circumferential direction of the outer surface of a pipe, and a first ultrasonic wave. A plurality of second ultrasonic sensors arranged in a row in the circumferential direction of the outer surface of the pipe with a certain distance in the axial direction of the pipe between the sensor and the first and second ultrasonic sensors; The ultrasonic wave sensors are connected to the first and second ultrasonic wave transceivers via the first and second ultrasonic wave transmission / reception switching devices, respectively, and the display device is connected to the first and second ultrasonic wave transceivers. The image synthesizing processing device provided is provided.

[0006]

In the above, the first ultrasonic transmission / reception switching device is
The first ultrasonic sensor is sequentially switched so that only one is always for transmission, and the transmission signal is transmitted from the first ultrasonic transceiver to the ultrasonic sensor switched for transmission.

The first ultrasonic sensor that receives the transmission signal emits an ultrasonic transmission beam into the liquid in the pipe, and the ultrasonic reflected beam generated by hitting bubbles in the liquid is not transmitting. And the second ultrasonic sensor, and is transmitted to the first and second ultrasonic transceivers via the first and second ultrasonic transmission / reception switching devices.

Also in the case of the second ultrasonic transmission / reception switching device, the first
Similarly to the ultrasonic transmission / reception switching device of the above, the second ultrasonic sensor is sequentially switched to the transmission mode, and the ultrasonic reflected beam generated by the bubbles is not transmitted to the other first and second ultrasonic sensors. Received and transmitted to the first and second ultrasonic transceivers.

The first and second ultrasonic transceivers, to which the ultrasonic reflected beams received by the first and second ultrasonic sensors are transmitted, input the image data to the image processing apparatus. When the switching between the first and second ultrasonic sensors has completed one cycle, the acquisition of the imaging data is completed, and the imaging processing device forms an image of bubbles from this data and displays it on the display device.

As described above, since the ultrasonic reflected beam is received by the ultrasonic sensors arranged in two rows in the circumferential direction at a constant interval on the outer surface of the pipe, as compared with the conventional device. The visualization data of bubbles is remarkably increased, and not only the cross-sectional display of bubbles but also the visualization of the entire bubbles is possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1 to FIG. 3, 1 is a plurality of ultrasonic sensors arranged in a row along the outer periphery of the pipe 11 on the upstream side of the flow of the liquid in the pipe 11, and each of which is a lead wire. 3 is connected.

Reference numeral 2 denotes an ultrasonic sensor, which is arranged in the same manner as the ultrasonic sensor 1 on the downstream side of the flow of the liquid with a constant space between the ultrasonic sensor 1 and the lead wire 4. Are connected, and the ultrasonic sensors 1 and 2 are both beveled ultrasonic sensors, and the ultrasonic transmission beam 31 transmitted by the ultrasonic sensor 2 intersects with the central axis of the pipe. The ultrasonic transmission beam 31 received by the ultrasonic sensor 1 and transmitted by the ultrasonic sensor 1 is also similarly received by the ultrasonic sensor 2.

Reference numerals 5 and 6 denote ultrasonic transmission / reception switching devices to which the ultrasonic sensors 1 and 2 on the upstream side and the downstream side are respectively connected to switch between transmission and reception.
Is one of the ultrasonic sensors 1 and 2 connected to it
Only one is transmitted and all others are received, the ultrasonic sensors 1 and 2 to be transmitted are sequentially switched, and when the last ultrasonic sensor 1 or 2 ends the transmission, the acquisition of the imaging data is completed.

Reference numerals 7 and 8 denote ultrasonic wave transmission / reception switching devices 5 and 6.
In the ultrasonic transmitter / receiver connected to each of the above, only when the ultrasonic sensors 1 and 2 are selected for transmission, transmission is performed, and the other is reception.

Reference numeral 9 is an image synthesizing processor for collecting and synthesizing ultrasonic wave reflection data from the bubbles 12 received by the ultrasonic wave transmitters / receivers 7, 8. Reference numeral 10 denotes a display device that displays the data subjected to the video synthesis processing by the video synthesis processing device 9 in two dimensions and three dimensions.

In the above, the ultrasonic transmission / reception switching device 5 to which the ultrasonic sensor 1 on the upstream side is connected is sequentially switched so that only one ultrasonic transmission / reception switching device 5 is for transmission, and the ultrasonic transmission / reception switching device 5 is switched for transmission. A transmission signal is transmitted from the ultrasonic transceiver 7 to the ultrasonic sensor 1.

The ultrasonic sensor 1 to which the transmission signal is transmitted is
The ultrasonic transmission beam 31 is emitted into the liquid in the pipe 11,
The ultrasonic reflected beam reflected by the bubble 12 in the liquid in the ultrasonic reflected beam range 32 is received by the other ultrasonic sensors 1 and 2 which are not transmitting, and the ultrasonic transmitter / receiver switching device 5, 6 transmits the ultrasonic transmitter / receiver. 7 and 8, the transceivers 7 and 8 input the imaged data to the image composition processing device 9.

The same applies to the ultrasonic transmission / reception switching device 6 to which the ultrasonic sensor 2 on the downstream side is connected. The ultrasonic sensor 2 is sequentially switched for transmission and the ultrasonic transmission beam 31 is transmitted.
Is emitted, and the ultrasonic reflected beam by the bubble 12 is received by the other ultrasonic sensors 1 and 2 which are not transmitting.

When the ultrasonic transmission / reception switching devices 5, 6 are switched to the transmission of the ultrasonic sensors 1, 2 once, the acquisition of the image data is completed, and the image synthesis processing device 9 uses these data to generate the image of the bubble. And the display device 10 displays it.

As described above, since the ultrasonic sensors are arranged in two rows along the outer circumference of the pipe, the visualization data of bubbles is remarkably increased as compared with the conventional device, and not only the cross-sectional display of the bubbles is displayed. , It became possible to visualize the entire bubble.

[0021]

According to the bubble imaging apparatus of the present invention, the plurality of first and second ultrasonic sensors are arranged in a row in the circumferential direction of the outer surface of the pipe and have a constant interval between the rows. And a first and a second ultrasonic transceiver in which the first and the second ultrasonic sensors are connected via a first and a second ultrasonic transmission / reception switching device, and a first and a second ultrasonic transmitter / receiver. By providing a video composition processing device connected to the sound wave transceiver and provided with a display device,
Since the ultrasonic reflected beams that reflected the bubbles are received by the ultrasonic sensors arranged in two rows, the visualization data of the bubbles is significantly increased compared to the conventional device, and not only the cross-sectional display of the bubbles but also the It is possible to visualize the entire bubble.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, (a) is an explanatory view of an ultrasonic sensor arranged in a pipe, and (b) is an explanatory view of an apparatus connected to the ultrasonic sensor.

FIG. 2 is an explanatory view of the operation according to the above-described embodiment, (a) is an explanatory view of a state where an upstream ultrasonic sensor is emitting ultrasonic waves, and (b) is an AA arrow of (a). It is a perspective view.

FIG. 3 is an explanatory view of the operation according to the above embodiment, (a) is an explanatory view of a state in which a downstream ultrasonic sensor is emitting ultrasonic waves, and (b) is a BB arrow of (a). It is a perspective view.

FIG. 4 is an explanatory diagram of a conventional bubble imaging device.

5 (a) and 5 (b) are explanatory views of the operation of the above-mentioned conventional device, in which (a) is an explanatory view of a state where an ultrasonic wave is emitted from one ultrasonic sensor, and (b) is a view taken along the line CC of FIG. It is a figure.

[Explanation of symbols]

 1, 2 ultrasonic sensor 3, 4 lead wire 5, 6 ultrasonic transmission / reception switching device 7, 8 ultrasonic transmitter / receiver 9 image synthesis processing device 10 display device 11 piping 12 bubbles

Claims (1)

[Claims] 1. A plurality of first ultrasonic sensors arranged in a row in the circumferential direction of the outer surface of the pipe, and a constant interval in the axial direction of the pipe between the first ultrasonic sensor and the first ultrasonic sensor. A plurality of second ultrasonic sensors, which are arranged in a row in the circumferential direction of the outer surface of the pipe, and the first and second ultrasonic sensors have first and second ultrasonic transmission / reception, respectively. A first and a second ultrasonic transmitter / receiver connected via a switching device, and an image composition processing device connected to the first and second ultrasonic transmitter / receiver and provided with a display device. A bubble visualization device.