JPH07198551A - Device for monitoring abnormality in rotary machine - Google Patents

Abstract

PURPOSE:To obtain a rotary machine abnormality monitoring device which can be used inexpensively for a single or a small-scale rotary machine unit, at the same time can instantly monitor various kinds of failures of the rotary machine unit, and can cope with a number of rotary units with a single device. CONSTITUTION:The device consists of a sensor 20 mounted to a rotary machine unit 10 to be measured, an amplification unit 40 for amplifying the signal of the sensor 20, a CPU unit 50 for performing A/D conversion of the output signal of the amplification unit 40, a signal reception unit 60 for receiving the signal from the CPU unit 50, and display lamps 70 and 71 which light up to indicate that the output signal of the signal reception unit 60 reaches an alarm level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention immediately monitors information on abnormalities of rotating equipment used in a place where a large amount of dangerous substances such as flammable liquids are handled, or in a place where general dangerous substances are not handled, The present invention relates to a rotating machine abnormality monitoring device capable of performing trend management of information by transmitting such information online to a centralized monitoring device.

[0002]

2. Description of the Related Art Conventionally, rotating equipment, that is, a pump unit, a gas turbine unit, and the like, a rotary machine unit in which various types of rotating equipment such as a pump, a blower, a gas turbine, a motor, and a speed reducer are incorporated in one pedestal. An abnormality monitoring device that monitors the abnormality of, for example, detects abnormal vibration of rotating equipment, analyzes the vibration frequency and determines the abnormality, and a precision diagnostic device that averages and extracts the vibration frequency,
There is provided a device that makes such information online and transmits it to a computer, displays the trajectory as a trend graph, and manages the trend.

[0003]

By the way, the above-mentioned abnormality detecting device for precisely diagnosing an abnormality of a rotating machine is one rotating machine regardless of the case where many rotating machine units are monitored by one abnormality monitoring device. In the case where one abnormality detection device is installed in the unit, the abnormality monitoring device is more expensive than the rotating machine unit, so that there is a problem that the cost is high.

In addition, the applicant of the present invention uses the "rotation machine abnormality monitoring method and apparatus" disclosed in Japanese Patent Laid-Open No. 3-44533 and the "rotation machine abnormality monitoring apparatus" disclosed in Japanese Patent Laid-Open No. 3-44519 to provide an explosion-proof area I have proposed the one that can be used in. This is an inexpensive device that enables trend management by storing information from multiple rotating machine units as a trend graph on a single computer, but in this case as well, it is used for single or small rotating machine units. The problem was that it was expensive.

The present invention has been made to solve the above-mentioned conventional problems. A single or a small rotary machine unit can be used at low cost, and various abnormalities of the rotary machine unit can be prevented. It is an object of the present invention to obtain a rotating machine abnormality monitoring device that can be immediately monitored by using a single device even if there are many rotating units.

[0006]

SUMMARY OF THE INVENTION A rotating machine abnormality monitoring apparatus according to the present invention includes a sensor attached to a measuring portion of a rotating machine unit, an amplifier unit for amplifying an output signal of the sensor, and an output of the amplifier unit. It is composed of a CPU unit for A / D converting the signal, a receiving unit for receiving the output signal from the CPU unit, and a display lamp that lights up when the output signal from the receiving unit reaches an alarm level. is there.

Further, the receiving unit is provided with a bar graph meter for displaying the signal received from the CPU unit.

Further, the receiving unit is provided with a communication unit which outputs a signal to a computer via an interface.

Further, D / which outputs an information pulse to the receiving unit to operate the distributed computer system.
The A conversion unit is provided.

[0010]

According to the present invention, the sensor detects an abnormality of the rotating unit and transmits a detection signal. The detection signal is amplified by the amplifier unit, A / D converted by the CPU unit, and received by the transmission unit. The alarm signal is sent by input to and the display lamp lights up.

Since the receiving unit is equipped with the bar graph meter, the alarm level of the alarm signal can be known.

Further, the communication unit or the D / A conversion unit is provided in the receiving unit and the computer is connected thereto, so that the tendency of the information of the sensor can be managed.

[0013]

FIG. 1 is a schematic configuration diagram showing a first embodiment of the present invention. In this figure, 1 is a pedestal, 10 is a rotary machine unit provided on the pedestal 1, and for example, a rotary machine 11 such as a pump blower, a turbine, a speed reducer 12, and a motor 13 are connected by a coupling 14. There is.

Reference numeral 20 denotes various sensors attached to the rotating machine unit 10 which is an object to be measured.
1, which detects vibrations of the reducer 12 and the motor 13, oil leakage, temperature change, rotation speed, etc., and is composed of one or more. For example, the rotary machine 11 has a vibration sensor 21, and the speed reducer 12 has A temperature sensor 23 is attached to the oil leak sensor 22 and the motor 13. However, it is not limited to the illustrated one. Reference numeral 30 denotes a rotating machine abnormality monitoring device according to the present invention, which includes a receiving box 31 and the receiving box 31.
It comprises an amplifier unit 40, a CPU unit 50, and a receiving unit 60 inside. The amplifier unit 40 comprises amplifiers 41, 42, 43 ... Amplifying output signals from one or a plurality of the sensors 20, respectively. For example, the sensors 21 to 23 are connected to the amplifiers 41 to 43, respectively. The CPU unit 50 includes the amplifiers 41 to 43.
The output amplified in A / D is converted. 60 is the CPU
A receiving unit capable of receiving signals from the unit 50 through a plurality of channels, including a CPU unit 50 and a receiving unit 6.
A bar graph meter 61 for transmitting a signal between 0s by a two-line multiplex transmission method and displaying the signal level from the CPU unit 50 is provided as an example, and an output level for displaying the signal level received by the receiving unit 60. A display unit 62,
When the signal level reaches a caution or warning level, a caution level display section 63 for displaying in yellow and a warning level display section 64 for displaying in red are provided, and further, a light is turned on as a warning signal to warn (yellow) Alternatively, it is composed of display lamps 70, 71 for displaying an alarm (red) in a two-stage system.

2 (a) and 2 (b) show the structure of the bar graph meter 61 shown in FIG. 1. FIG. 2 (a) is a front view and FIG. 2 (b) is an explanatory view showing a display operation. is there. In these figures, the same reference numerals as those in FIG. 1 denote the same parts, 65 is a display board, 66 is a connection terminal, and 67 is the output level display section 6.
2 is a display element for displaying 2, and 68 is a display element for displaying the caution level display section 63 and the alarm level display section 64 in two steps with arbitrary values, and the display elements 67 and 68 are linearly arranged in a line. They are arranged and juxtaposed.

Thus, the bar graph meter 61 is shown in FIG.
When the output signal is received by the receiving unit 60 as shown in (b), it is displayed in a bar graph manner on the output level display section 62, and when the output signal reaches the caution level, the lower first stage. Is displayed on the warning level display section 63, and when the warning level is reached, it is displayed on the upper second warning level display section 64.

Therefore, the bar graph meter 61 displays the output level of the receiving unit 60 on the output level display section 62 in a bar graph manner, and sets the caution level and the alarm level in advance to arbitrary values. 63 and the alarm level display section 64 can be set.

Incidentally, FIG. 2B shows a case where the display of the output level display section 62 exceeds the caution level.

Next, the operation will be described. If abnormal vibration occurs in, for example, the rotating machine 11 in the rotating machine unit 10, the vibration sensor 21 detects this and outputs a signal, and the signal is amplified by the amplifier 41 before the CPU.
A / D conversion is performed by the unit 50, and then the receiving unit 6
Input to 0. At this time, if the signal from the vibration sensor 21 has reached the caution level in the receiving unit 60, the caution level display portion 63 lights yellow, and the display lamp 70 lights up so that the worker and the holding management can be performed from a remote point. Can notify people of abnormalities. Further, when the alarm level is reached, the alarm level display portion 64 lights up in red and the display lamp 71 lights up to notify the abnormality.

If an oil leak sensor 22 is attached to the speed reducer 12 and a temperature sensor 23 is attached to the motor 13, each sensor 2 can be operated when an abnormality occurs in either the oil leak or the temperature rise.
2 and 23 detect the abnormality, and the respective amplifiers 42 and 43
To the display lamps 70 and 71 as described above.
Is lit up with.

The receiving unit 60 and the indicator lamp 7
0 and 71 can be separated from the reception box 31 and provided at appropriate places. Moreover, the number of display lamps may be one.

Further, the display lamps 70, 71 are provided with rotatable reflectors (not shown) around the indicator lamps, and the reflectors are rotated simultaneously with lighting. Indicator lamps 70, 7 when viewed from the direction
1 looks as if it is blinking.

FIG. 3 is a block diagram showing a second embodiment of the present invention, and the same reference numerals as those in FIG. 1 denote the same parts. In FIG. 3, reference numeral 80 denotes a communication unit combined with the receiving unit 60, which is, for example, a commonly used "RS-2.
A computer (not shown) such as a personal computer or a host computer is connected through an interface (not shown) as a computer output connector of the "32C" system.

FIG. 4 shows a third embodiment of the present invention, in which 90 is a D / A in combination with the receiving unit 60.
The conversion unit is provided to connect a distributed computer system (not shown) and outputs an information pulse of 4 to 20 mA to operate the distributed computer system. In the second and third embodiments shown in FIGS. 3 and 4, since the receiving unit 60 is connected, the alarm level can be known by the computer or the distributed computer system at the same time when the display lamps 70, 71 blink. . Other operations are the same as those in the first embodiment.

[0025]

As described above, according to the present invention, the sensor attached to the measurement portion of the rotating machine unit, the amplifier unit for amplifying the output signal of this sensor, and the A / D conversion of the output signal of this amplifier unit. A CPU unit,
The receiving unit that receives the output signal from the CPU unit and the display lamp that lights up when the output signal from the receiving unit reaches the alarm level,
It is possible to immediately respond to the abnormality of the rotating machine unit by the lighting display of the indicator lamp, and to detect the vibration, oil leakage, temperature rise, displacement or abnormality of the rotation speed that is important for the safety of the rotating machine unit with one device In addition to the above, it is possible to detect with a single device even if there are a large number of rotating machine units, and the device is inexpensive, which is an advantage of being economical.

Further, since the receiving unit is equipped with the bar graph meter for displaying the signal received from the CPU unit, the alarm level can be notified at the same time when the display lamp blinks, and the abnormality of the rotating machine unit can be easily dealt with. It has the advantage that it can.

Further, the receiving unit is provided with a communication unit for outputting a signal to a computer via an interface, and the receiving unit outputs a data pulse to operate the distributed computer system. Is provided, there is an advantage that the tendency of information of various sensors can be managed.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing the shape of the bar graph meter in FIG.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a third embodiment of the present invention.

[Explanation of symbols]

 1 pedestal 10 rotating machine unit 20 sensor 30 rotating machine abnormality monitoring device 31 receiving box 40 amplifier unit 50 CPU unit 60 receiving unit 61 bar graph meter 70 display lamp 71 display lamp 80 communication unit 90 D / A conversion unit

Claims (4)

[Claims] 1. A sensor attached to a measurement site of a rotary machine unit of an object to be measured, an amplifier unit for amplifying an output signal of the sensor, and a CPU unit for A / D converting the output signal of the amplifier unit. A rotating machine abnormality monitoring device comprising: a receiving unit that receives an output signal from the CPU unit; and a display lamp that lights up when the output signal from the receiving unit reaches an alarm level. 2. The rotating machine abnormality monitoring device according to claim 1, wherein the receiving unit includes a bar graph meter for displaying a signal received from the CPU unit. 3. The rotating machine abnormality monitoring device according to claim 1, wherein the receiving unit includes a communication unit that outputs a signal to a computer via an interface. 4. The rotating machine abnormality monitoring device according to claim 1, wherein the receiving unit is provided with a D / A conversion unit that outputs an information pulse to operate the distributed computer system. .