JP5194246B2 - Pipe line measuring device - Google Patents

Description

  The present invention relates to a pipe line measuring device, and in particular, a power supply unit, a drive circuit unit, and a sensor unit of a sensor probe are connected to each other by a flexible joint, and the power supply unit, the drive circuit unit, and the sensor unit are connected to each other. By being configured to be guided individually along the curved portion of the pipe, the sensor probe can be surely passed through the pipe having a small diameter and a large curvature, and the applicable range of path measurement can be expanded. The present invention relates to a new improvement for achieving the above.

As this type of pipe measuring device conventionally used, for example, the pipe measuring device shown in Patent Document 1 is used, and is configured as shown in FIGS.
FIG. 3 is a block diagram showing a conventional pipe measuring device. In the figure, what is indicated by reference numeral 1 is a sensor probe that is movably provided in a pipe 2, and a cable 3 connected to the sensor probe 1 is connected via a cable relay 4 and a cable length measuring device 5. Then, it is wound up by the cable winder 6. The cable speed 5a from the cable length measuring device 5 and the probe data 6a from the cable winder 6 are taken into an arithmetic unit 7 including, for example, a CPU, a RAM, and a ROM.

  4 is a side view showing the sensor probe 1 of FIG. 3, and FIG. 5 is a cross-sectional view of the sensor probe 1 of FIG. The sensor probe 1 is formed in a cylindrical shape as shown in FIG. 4, and has a power supply unit 10, a drive circuit unit 11, and a sensor unit 12 that are integrally formed as shown in FIG. 5. . The power supply unit 10 is a battery, for example, and supplies power to the drive circuit unit 11 and the sensor unit 12. The drive circuit unit 11 is connected to the sensor unit 12, controls the operation of the sensor unit 12, and creates the probe data 6a based on a signal from the sensor unit 12. The sensor unit 12 includes a small DTG (biaxial degree of freedom gyro) or the like, and outputs signals for detecting the pitch angle θ and the azimuth angle ψ of the sensor probe 1.

  Next, FIG. 6 is an explanatory diagram showing the route of the pipeline 2 measured by the calculation unit 7 of FIG. The calculation unit 7 shown in FIG. 3 performs the route measurement of the pipeline 2 as shown in FIG. 6 by performing calculation processing of the cable speed 5a and the probe data 6a. Specifically, the calculation unit 7 obtains the moving direction of the sensor probe 1 by obtaining the pitch angle θ and the azimuth angle ψ of the sensor probe 1 from the probe data 6a. Here, the cable speed 5 a from the cable length measuring device 5 corresponds to the moving speed of the sensor probe 1. The calculation unit 7 obtains the movement path of the sensor probe 1, that is, the path of the pipe line 2 based on the movement direction of the sensor probe 1 and the movement speed of the sensor probe 1.

JP 2007-155583 A

  In the conventional pipe measuring device as described above, since the sensor probe 1 has an integral cylindrical shape, the sensor probe 1 cannot be turned (turned) in a narrow space, and has a small diameter and a large curvature. The sensor probe 1 cannot be passed through. Specifically, since the conventional sensor probe 1 has a diameter of about 45 mm and a length of about 500 mm, it cannot be applied to route measurement of a pipeline having an inner diameter of 50 mm and a turning radius of about 1 m.

  The present invention has been made in order to solve the above-described problems, and its purpose is to allow a sensor probe to pass through a pipe having a small diameter and a large curvature, thereby expanding the applicable range of path measurement. It is providing the pipe line measuring device which can do.

The pipe line measuring device according to the present invention is based on the pitch angle, the azimuth angle, and the speed of the sensor probe when the sensor probe having the power source part, the drive circuit part, and the sensor part is advanced along the pipe line. A pipe line measuring apparatus for measuring a path of the pipe line, wherein the flexible joint is provided on the sensor probe and connects the power supply unit, the drive circuit unit, and the sensor unit provided separately to each other. comprising a, when the sensor probe is advanced along the conduit, the power supply unit, the driving circuit portion, and the sensor unit is guided individually along the bent portion of the pipe, before Symbol The sensor unit is disposed between the power supply unit and the drive circuit unit, and the flexible joint connects the sensor unit and the power supply unit and connects the sensor unit and the drive circuit unit. It is binding.

According to the pipe line measuring device of the present invention, the power supply unit, the drive circuit unit, and the sensor unit of the sensor probe are connected to each other by a flexible joint, and the power supply unit, the drive circuit unit, and the sensor unit are connected to each other. Since the guide is individually guided along the curved portion of the pipe, the sensor probe can be surely passed through the pipe having a small diameter and a large curvature, and the applicable range of path measurement can be expanded.
In addition, since the sensor unit is disposed between the power supply unit and the drive circuit unit, the power supply unit and the drive circuit unit can be advanced along the pipeline before and after the sensor unit. The traveling position can be more reliably set to the center position of the pipeline.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing a sensor probe of a pipe line measuring apparatus according to Embodiment 1 of the present invention. Note that the same or equivalent parts as those of the conventional pipe measuring device will be described using the same reference numerals. In the figure, a sensor probe 1 traveling in a pipe 2 has a power supply unit 10, a drive circuit unit 11, and a sensor unit 12 provided separately from each other at intervals. The power supply unit 10 is a battery, for example, and supplies power to the drive circuit unit 11 and the sensor unit 12. The drive circuit unit 11 is electrically connected to the sensor unit 12, controls the operation of the sensor unit 12, and creates probe data 6a (see FIG. 3) based on the signal from the sensor unit 12. To do. The sensor unit 12 includes a small DTG (biaxial degree of freedom gyro) 12a, a MEMS gyro 12b, and a triaxial accelerometer 12c, and a signal for detecting the pitch angle θ and the azimuth angle ψ of the sensor probe 1. Is output.

  The sensor unit 12 is disposed between the power supply unit 10 and the drive circuit unit 11. That is, the power supply unit 10 and the drive circuit unit 11 are arranged before and after the sensor unit 12 along the traveling direction (longitudinal direction) A of the sensor probe 1. The power supply unit 10, the drive circuit unit 11, and the sensor unit 12 are connected to each other by a flexible joint 15 that can be bent. That is, the flexible joint 15 connects the sensor unit 12 and the power supply unit 10, and connects the sensor unit 12 and the drive circuit unit 11.

  Next, FIG. 2 is a side view showing the flexible joint 15 of FIG. In the figure, the flexible joint 15 includes a joint body 16 made of a rubber tube or a metal tube, and a pair of metal coupling portions 17 attached to both ends of the joint body 16. One end of the coupling portion 17 is provided with a threaded portion 17a having a threaded groove. The threaded portion 17a is a front end and a rear end of the power source unit 10, the drive circuit unit 11, and the sensor unit 12. And is screwed into a connection port 18 provided in. The coupling portion 17 has a through hole 17b communicated with the hollow portion 16a in the joint body 16, and connects the power source unit 10, the drive circuit unit 11, and the sensor unit 12. Electrical wiring (not shown) is passed through these through holes 17b and the hollow portion 16a.

Next, the operation of the sensor probe 1 of this embodiment will be described. In this embodiment, since the power supply unit 10, the drive circuit unit 11, and the sensor unit 12 provided separately from each other are connected by a flexible joint 15 that can be bent, the sensor probe 1 is connected to the tube. When traveling along the path 2, the power supply unit 10, the drive circuit unit 11, and the sensor unit 12 are individually guided along the curved portion 2 a of the pipe line 2. In other words, the power supply unit 10, the drive circuit unit 11, and the sensor unit 12 can be turned (turned) in a narrow space as compared with the conventional configuration in which the power supply unit 10, the drive circuit unit 11, and the sensor unit 12 are integrally provided.
Thereby, the sensor probe 1 can be reliably passed through the pipe line 2 having a small diameter and a large curvature, and the applicable range of path measurement can be expanded.

  In addition, since the sensor unit 12 is disposed between the power supply unit 10 and the drive circuit unit 11, the power supply unit 10 and the drive circuit unit 11 travel along the pipeline 2 before and after the sensor unit 12. Is done. Thereby, the shake of the sensor part 12 at the time of advancing in the pipe line 2 can be made small, and the advancing position of the sensor part 12 can be more reliably set as the center position of the pipe line 2. Therefore, the accuracy of path measurement can be improved.

It is a block diagram which shows the sensor probe of the pipe line measuring device by Embodiment 1 of this invention. It is a side view which shows the flexible joint of FIG. It is a block diagram which shows the conventional pipe line measuring device. It is a side view which shows the sensor probe of FIG. It is sectional drawing of the sensor probe of FIG. It is explanatory drawing which shows the path | route of the pipe line measured by the calculating part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sensor probe 2 Pipe line 2a Bending part 10 Power supply part 11 Drive circuit part 12 Sensor part 15 Flexible joint

Claims (1)

The pitch angle of the sensor probe (1) when the sensor probe (1) having the power supply unit (10), the drive circuit unit (11), and the sensor unit (12) is advanced along the pipe line (2), A pipe line measuring device for measuring the path of the pipe line (2) based on an azimuth angle and a speed,
A flexible flexible joint (15) provided on the sensor probe (1) and connecting the power supply unit (10), the drive circuit unit (11), and the sensor unit (12) provided separately is provided. Prepared,
When the sensor probe (1) is advanced along the pipe line (2), the power supply part (10), the drive circuit part (11), and the sensor part (12) are connected to the pipe line (2). ) Are individually guided along the curved portion (2a) ,
The sensor unit (12) is disposed between the power supply unit (10) and the drive circuit unit (11),
The flexible joint (15) connects the sensor unit (12) and the power supply unit (10) and connects the sensor unit (12) and the drive circuit unit (11). Pipeline measuring device.

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