JPH0130867Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-generating power supply device for measuring rotating bodies of rotating machines such as turbine pumps and compressors.

Measuring devices for measuring physical quantities such as stress, vibration, force, displacement, and temperature on the rotating side of various rotating machines are installed on the rotating side, so there are various difficulties in supplying power to the measuring devices. be.
The battery method, electromagnetic induction method, etc. are used as this type of power supply method, but the former cannot be used for long-term measurement, while the latter can be used for long-term measurement, but it is difficult to handle such as installation and adjustment. It was hot.

On the other hand, in the measurement of a rotating machine, there are many cases where it is sufficient to perform measurement only when the specimen is rotating, and in such cases, it is sufficient to supply power to the measuring device only when the specimen is rotating. Furthermore, it is desired that the power supply method be easy to handle and capable of long-term measurement.

The present invention was developed based on these circumstances, and its purpose is to provide self-generated power that is easy to handle and can provide long-term power supply in devices that supply power to electrical components attached to rotating bodies. The purpose is to provide a supply device.

In order to achieve the above objectives, the power supply device of the present invention is a device that supplies power to electrical components attached to a rotating body, and includes a hollow cylindrical portion cut into the rotation axis of the rotating body, and a A stator coil disposed in a ring shape on the inner peripheral surface of the hollow cylindrical portion, a weight rotatably disposed within the hollow cylindrical portion and whose posture is controlled by its own weight, and a stator coil attached to the weight. and a permanent magnet facing each other.

In other words, the power generation section is an application of the basic method of a DC generator. In this device, the stator side rotates with the rotation of the specimen, and the rotor side rotates the specimen under the action of a weight. It always remains stationary even when

An embodiment of the present invention will be described below with reference to the drawings.

1 in Figure 1 is a measurement sensor, and this measurement sensor 1
The detected signal is transmitted and measured via a telemeter system 2, which includes a power supply device 4 and a power stabilization circuit 5 attached to the center of the shaft 3 of the specimen. It operates by.

FIG. 2 is a schematic configuration diagram of the power supply device 4,
Reference numerals 6 and 7 in the figure represent a rotor and a stator, respectively, and the stator 7 is fixed in a hollow cylindrical portion 8 cut into the rotation axis of the shaft 3 of the specimen. Further, the rotor 6 is supported inside the stator 7 via a bearing 9. A stator coil 10 is attached to the inner periphery of the stator 7 as shown in FIG. Further, the rotor 6 has a weight 11 at both ends (see FIG. 3) and a permanent magnet 12 at the center.

As described above, the stator 7 of the power supply device 4 is installed in the hollow cylindrical part 8 provided on the shaft 3 of the specimen, and the stator 7 and the stator coil 10 rotate together with the shaft 3. . On the other hand, even if the stator 7 rotates, the rotor 6 and the permanent magnets 12 are always kept stationary by the action of the bearings 9 and the weight 11 with the weight 11 facing vertically downward. Therefore,
When the shaft 3 rotates, the stator coil 10 and the permanent magnet 1
2 are in a mutually rotating relationship, and as a result, an electromotive force is generated in the stator coil 10, and stable power can be supplied to the telemeter system 2 via the stabilizing circuit 5.

As described above based on the embodiments, the power supply device of the present invention is a device that supplies power to electrical components attached to a rotating body, and is a device that supplies power to electrical components attached to a rotating body. a cylindrical portion, a stator coil disposed in a ring shape on the inner circumferential surface of the hollow cylindrical portion, a weight rotatably disposed within the hollow cylindrical portion and whose attitude is controlled by its own weight, and It is characterized by consisting of an attached stator coil and a permanent magnet facing each other, and can supply power for a long period of time to electrical components attached to a rotating body. Measurement can be performed, and there is no need to adjust the device during use, making it easy to handle.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a schematic diagram showing a state in which a power supply device is attached to a rotating machine, Fig. 2 is a schematic sectional view of the power supply device, and Fig. 3 is a schematic diagram showing a state in which a power supply device is attached to a rotating machine.
FIG. 4 is a cross-sectional view of FIG. 2 and a cross-sectional view of FIG. 2, respectively. 3... Axis (rotating body), 4... Power supply device, 6
... rotor, 7 ... stator, 8 ... hollow cylindrical part,
9...Bearing, 10...Stator coil, 11
... Weight, 12 ... Permanent magnet.

Claims (1)

[Scope of utility model registration request] A device for supplying electric power to electrical components attached to a rotating body, which includes a hollow cylindrical part cut into the rotation axis of the rotating body, and a ring-shaped arrangement on the inner peripheral surface of this hollow cylindrical part. A power supply comprising a stator coil, a weight that is rotatably disposed within the hollow cylindrical portion and whose attitude is controlled by its own weight, and a permanent magnet that is attached to the weight and faces the stator coil. Device.