JPH0658802A - Remotely vibration judging apparatus - Google Patents

Abstract

PURPOSE:To obtain a remotely vibration judging apparatus which enables the checking of condition of vibration and temperature remotely without moving in person to a location of an object to be detected. CONSTITUTION:A vibration detection rod 6 and thermocouples 7 and 8 are mounted on a detector 2. The detector 2 and a signal transmitting section 3 are mounted on a rotating shaft cover 4 with a detector anchor member 5. A rotating shaft 1 is located inside the rotating shaft cover 4. Aside from the transmitting section 3, a receiving section 11 is arranged. The vibration and temperature of the rotating shaft 1 are detected with the detector 2 and when they exceeds set values set with a limiter in the transmitting section 3, a signal is generated and reaches the receiving section 11 thereby enabling the checking for rotating condition of the rotating shaft 1 remotely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects vibration and temperature associated with operation of an electric drive motor, various rotary machines such as bearings and gears connected to the motor, or operation of a valve through which a fluid passes. The present invention relates to a vibration determination device used when confirming the quality of operation, and more particularly to a vibration remote determination device capable of determining the quality of operation at a position distant from a rotating machine or a valve.

A large number of various rotary machines and valves are installed in the production sites of factories and plants, and these machines and valves obtain the maximum production amount with the minimum energy consumption and maintain the highest production quality. In order to do so, its operating status is checked constantly or regularly.

[0003]

2. Description of the Related Art As a conventional vibration determination device, for example,
There is one disclosed in Japanese Utility Model Laid-Open No. 1-107934.
In this system, a temperature sensor is attached to the tip of a vibration sensor via a ceramic heat insulating material, and both sensors are pressed against the object to be detected and the vibration and temperature are detected and displayed. The operation status of the detected object is confirmed.

[0004]

In the above-mentioned conventional apparatus, in order to detect vibration, the measurer moves to the place where each rotating machine or valve is installed, and the sensor is set as the object to be detected. There was a problem that it had to be pressed against, which required a lot of labor and time. In a large-scale factory or plant, the moving distance becomes long, and the labor and time for measurement become enormous. In addition, valves are often installed at high places or underground spaces,
It is also labor-intensive and time-consuming.

Therefore, the technical problem of the present invention is to reduce the labor and time required for the measurer to move to the place where various rotary machines and valves are installed, and to make it possible to easily confirm the operating condition. That is.

[0006]

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems are a detector in which a vibration sensor and a temperature sensor are substantially integrally incorporated, and the detector. Is fixed to the object to be detected by a detector fixing member and a converter for converting a signal detected by the detector into an electric signal, and an upper limit or a lower limit of a signal from the transmitter or a predetermined value. Limiter that emits a signal when the set value is exceeded
And a receiver for receiving the signal from the limiter.

[0007]

The operation of the above technical means is as follows.
The detector is attached to the detected member such as a rotary machine or a valve by the detector fixing member. The vibration or temperature of the member to be detected is detected by the vibration sensor and the temperature sensor, converted into an electric signal by the converter, and transmitted. By setting the upper limit value or the lower limit value of vibration or temperature or a predetermined set value in the limiter, a signal is emitted when the signal detected by the sensor exceeds these set values. When the receiver receives the signal from this limiter, the upper and lower limits of the vibration or temperature of the detected object or a predetermined value is detected, and the measurer does not move to the installation location of the rotating machine or valve. Can also check its operating status.

[0008]

EXAMPLES Examples showing specific examples of the present invention will be described (see FIGS. 1 and 2). FIG. 1 shows a state in which a transmitter 3 having a built-in detector 2 is attached to a rotary shaft 1 as a member to be detected. The detector 2 is attached via the detector fixing member 5 in a state where the tip of the detector 2 is pressed against the surface of the rotary shaft cover 4 arranged on the outer periphery of the rotary shaft 1 having a circular cross section. Detector 2
A vibration detecting rod 6 having a tapered tip is provided at the center of the, and thin plate thermocouples 7 and 8 are arranged above and below the vibration detecting rod 6. The thermocouples 7 and 8 have a substantially U-shaped cross section, and a small-diameter hole (not shown) through which the vibration detection rod 6 penetrates is provided at the center of the side in contact with the rotary shaft cover 4. The vibration detection rod 6 is connected to a piezoelectric element (not shown) in the transmitter 3 to convert a vibration signal into an electric signal. Further, the thermocouples 7 and 8 are also connected to an amplification unit (not shown). Although not shown in the transmitter 3,
A limiter that can set the upper and lower limits and set values for vibration and temperature is placed, and a transmitter that transmits the signal from the limiter is attached.

The detector fixing member 5 is composed of an elastic belt 10 which fits into the collar portion 9 provided on the detector 2, and an adjusting bolt 20 for adjusting the elastic force of the elastic belt 10.
By pressing the detector 2 against the outer surface of the rotary shaft cover 4 and rotating the adjusting bolt 20, the detector 4 can be reliably pressed and fixed.

FIG. 2 shows a receiver 11 which receives a signal from the transmitter 3. The receiving unit 11 includes a receiver 12, an amplifier 13 that amplifies a received signal, an A / D converter 14, a microcomputer 15, a memory 16, and a display unit 17.

As shown in FIG. 1, the detector 2 is pressed and fixed to the rotary shaft cover 4 to detect the vibration of the rotary shaft 1 and the surface temperature of the rotary shaft cover 4. When the detected vibration and temperature signals exceed the set value set by the limiter, a signal is emitted from the limiter and transmitted from the transmitter 3 to the receiver 11. The signal is amplified in the receiving unit 11, is input to the microcomputer 15, and is compared with the vibration and temperature signal levels stored in advance in the memory unit 16.
The operating status of is displayed on the display unit 17.

When the rotating shaft 1 is eccentrically rotated, abnormal vibration occurs, and the temperature rises due to frictional heat or the like, so that the abnormality can be detected. Also in valves and steam traps, when the valve body must be closed and the fluid originally closed, leaking fluid can detect the leak status by causing elastic wave vibration. it can.

In the present embodiment, an example in which the detector 2 is attached to the rotary shaft cover 4 via the elastic belt 10 is shown. However, other attachment, for example, a magnet is arranged at the tip of the detector 2 is attached. Alternatively, the detector 2 can be attached by providing a fitting hole or a convex portion on the surface of the object to be detected. Further, in the present embodiment, the example in which the limiter is provided in the transmitting unit 3 is shown, but it may be provided in the receiving unit 11. Further, in the present embodiment, the operating status of the rotary machine and the valve is displayed on the display unit 17
Although the example of the display is shown in the above, it is also possible to issue an alarm by the signal of the limiter or record the signal in the limiter.

[0014]

The present invention produces the following unique effects. As described above, according to the present invention, it is possible to confirm whether or not the upper limit value or the lower limit value of vibration or temperature or a predetermined set value is exceeded without the measurer moving to the installation location of the rotating machine or the valve. Therefore, the labor and time for measuring vibration and temperature can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional configuration diagram showing a transmitter of an embodiment of a vibration remote determination device of the present invention.

FIG. 2 is a configuration diagram showing a receiver of an embodiment of the vibration remote determination device of the present invention.

[Explanation of symbols]

 1 Rotation axis 2 Detector 3 Transmitter section 4 Rotation axis cover 5 Detector fixing member 6 Vibration detection rod 7,8 Thermocouple 11 Receiver section 12 Receiver 15 Microcomputer 16 Memory 17 Display section

Claims (1)

[Claims] 1. A detector in which a vibration sensor and a temperature sensor are substantially integrally incorporated, a detector fixing member for pressing and fixing the detector against an object to be detected, and an electric signal for detecting a signal detected by the detector. A transmitter including a converter for converting into a signal, a limiter that emits a signal when the upper limit or lower limit of the signal from the transmitter exceeds a predetermined set value, and a receiver that receives the signal from the limiter. Vibration remote determination device consisting of.