JP3256324B2 - Rotary machine abnormality diagnosis method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for diagnosing abnormalities of a rotating machine, and can be used, for example, when comprehensively managing a rotating machine in combination with an abnormality monitoring device for monitoring an abnormal state of a rotating machine.

[0002]

2. Description of the Related Art Conventionally, in the management of a rotating machine, the operating state of the rotating machine is continuously monitored continuously by a vibration sensor, a temperature sensor, and the like, and when an abnormality occurs, an alarm is issued to notify the abnormality. There is a machine abnormality monitoring device. Such an abnormality monitoring device only informs the operator that the vibration value, etc. has deviated from the reference value at the time of occurrence of the abnormality, and when the operator is not sure what to do with the abnormality thereafter. There were many.

On the other hand, there is an abnormality diagnosis apparatus for a rotating machine which assists the operator by estimating the cause of the abnormality and instructing the operator on a response method or the like in response to the occurrence of the abnormality of the rotating machine. Such an abnormality diagnosis apparatus is a so-called expert system, and many of them are commercially available. The apparatus stores and transmits knowledge of a skilled expert as a knowledge base and standardizes abnormality diagnosis.

[0004]

However, many of such abnormality diagnosis devices mainly function as a single unit, and are provided separately from the above-described abnormality monitoring device that constantly monitors a rotating machine. There were many things. For this reason, in such an abnormality diagnosis apparatus, at the time of diagnosis execution, an operator must manually input information on an abnormality obtained by the abnormality monitoring apparatus to the abnormality diagnosis apparatus. Therefore, there has been a problem that this information input operation is complicated and difficult, is inconvenient to use, and is not very suitable for practical use. In addition, the information input operation is inadequate in an emergency or the like due to complexity. In addition, there is a problem that an erroneous diagnosis may occur due to an erroneous input because the information input operation is manually input by an operator.

[0005] Further, in such an abnormality diagnosis device, there is also a device in which a detection signal of a vibration sensor is taken online to perform online diagnosis. However, the vibration sensor detects a simple amplitude fluctuation and performs an abnormality diagnosis using the information as information. Of the degree. For this reason, there is a problem that information for diagnosis is insufficient for performing accurate abnormality diagnosis.

[0006] On the other hand, in the online diagnosis performed by monitoring using the vibration sensor, the information input for diagnosis can be performed online, so that the difficulty of the information input operation can be solved. Is provided separately from a monitor display means such as a CRT for displaying the information and a diagnostic display means such as a CRT for displaying a display for abnormality diagnosis. For this reason, there has been a problem that it is inappropriate for an operator to perform monitoring and diagnosis as a series of operations. And in the instrument room of the plant,
Usually, since many other devices and the like are installed, providing the monitoring display unit and the diagnostic display unit separately in the instrument room as described above increases the installation space for each device and is preferable. There was no problem. Further, when the monitoring display means and the diagnosis display means are provided separately, there is a problem that the equipment cost is increased.

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for diagnosing abnormalities of a rotating machine capable of providing accurate information and appropriate instructions to an operator when an abnormality occurs in the rotating machine to assist the operator, and further reducing equipment costs and installation space. It is an object of the present invention to provide a practical method for diagnosing abnormalities of a rotating machine which can be reduced and is easy to handle and a device therefor.

[0008]

SUMMARY OF THE INVENTION According to the present invention, an abnormality is diagnosed on the basis of information on at least three factors of a vibration speed, a vibration acceleration, and a vibration direction, and a monitor display and a diagnostic display are switched and selected. It is intended to achieve the above object by integrating the display means.

More specifically, the abnormality diagnosis method for a rotating machine according to the present invention associates a change pattern including three factors of a vibration speed, a vibration acceleration, and a vibration direction of the rotating machine with a cause of the abnormality of the rotating machine in advance. It is stored, and a detection signal obtained from a vibration sensor for detecting vibration of the rotating machine is compared with the change pattern to perform abnormality monitoring, and the abnormality monitoring is compared with a detection signal obtained from the vibration sensor. A rotating machine abnormality diagnosis method for recognizing an abnormality cause of the rotating machine corresponding to the change pattern and diagnosing the malfunction , wherein a detection signal obtained from the vibration sensor divides an acceleration signal output of the vibration sensor into two. The speed signal obtained by subjecting one of the acceleration signal outputs to an average value processing, integrating the other branched acceleration signal output and converting the output into a speed signal is subjected to the average value processing. And wherein the door.

Further, according to the present invention, a speed signal obtained by dividing the output of the acceleration signal of the vibration sensor into two using a low-pass filter and a high-pass filter, integrating the output having passed through the low-pass filter and converting it into a speed signal. Are averaged, and the output passed through the high-pass filter is averaged.

Further, the present invention is characterized in that a monitor display for displaying information obtained by the abnormality monitoring and a diagnostic display for displaying an abnormality diagnosis based on the information are selectively displayed. I do.

Further, the abnormality diagnosis apparatus for a rotating machine according to the present invention includes a vibration sensor for detecting vibration of the rotating machine;
Machine vibration speed, vibration acceleration and vibration direction.
The corresponding change pattern and the cause of abnormality of the rotating machine
Storing the detection signal obtained from the vibration sensor and the
An abnormality monitoring process that monitors abnormalities by comparing them with change patterns
The vibration sensor is controlled by the
The change pattern compared with a detection signal obtained from the
Recognize the cause of the abnormality of the rotating machine corresponding to
A detection signal obtained by the vibration sensor, the acceleration signal output of the vibration sensor is divided into two, and one of the branched acceleration signal outputs is subjected to an average value processing, and The speed signal obtained by integrating the output of the other acceleration signal and converting it into a speed signal is subjected to an average value processing.

Further, in the present invention, a low-pass filter and a high-pass filter for bifurcating the acceleration signal output of the vibration sensor, a first average value processing section for performing an average value processing on the output passing through the high-pass filter, and the low-pass filter A speed conversion unit that integrates an output that has passed through to convert the output into a speed signal, and a second average processing unit that averages the speed signal converted by the speed conversion unit. .

Further, according to the present invention, it is possible to switch and select a monitoring display based on information obtained by the abnormality monitoring processing device and a diagnostic display obtained based on the monitoring display information by the abnormality diagnosing device. Is provided with a display means for displaying the information.

[0015]

According to the present invention, a change pattern including at least three factors of a vibration speed, a vibration acceleration, and a vibration direction of a rotating machine is associated with a cause of abnormality of the rotating machine in advance and stored in an abnormality diagnosis device. On the other hand, the operating condition such as vibration of the rotating machine is constantly monitored by the vibration sensor of the abnormality monitoring device. Then, when the operator is notified of the abnormality of the rotating machine by the abnormality monitoring device, the abnormality diagnosing device compares the detection signal obtained from the vibration sensor with the change pattern and diagnoses the abnormality of the rotating machine. Therefore, when an abnormality occurs, the abnormality diagnosis is performed in consideration of at least the three factors of the vibration speed, the vibration acceleration, and the vibration direction, so that the accurate abnormality diagnosis is performed.

The detection signal obtained from the vibration sensor is obtained by dividing the acceleration signal output of the vibration sensor into two, processing the average of one of the outputs, integrating the other of the two branched outputs, and converting the output into a speed signal. By using the average value of the speed signal, it is possible to easily compare the speed signal with the change pattern.

Further, by sharing the display means of the abnormality monitoring device and the abnormality diagnosis device so as to be selectable by switching, the operator can perform monitoring and diagnosis as a series of operations, Installation space in the instrument room is reduced, and equipment costs are reduced.
These objects are achieved by these.

[0018]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an abnormality diagnosis device 10, an abnormality monitoring device 20, and a rotating machine 30 to be monitored and diagnosed according to the present embodiment.

The rotating machine 30 on the lower side in the figure is a horizontal centrifugal pump 31.
And a motor 32 for rotationally driving the motor. The operating state is constantly monitored by the abnormality monitoring device 20 on the upper left side in the figure. Further, when an abnormality occurs, the abnormality diagnosis device 10 on the upper right side in the figure estimates the cause of the abnormality.

The rotating machine 30 is provided with a vibration sensor 21 or various monitoring sensors (not shown) such as a temperature sensor, an oil leak sensor, and a gas sensor. Detection signals from these vibration sensors 21 and the like are sent to an abnormality monitoring processing device 22 composed of a personal computer or the like. Various processing is performed by the abnormality monitoring processing device 22, and information is provided to the operator via a changeover switch 40 by a display means 41 such as a CRT. Various monitoring sensors such as the vibration sensor 21, an abnormality monitoring processing device 22, and an abnormality monitoring device
20 are configured. This abnormality monitoring device 20 is an abnormality monitoring device as described in JP-A-3-44533 by the present inventors.

The abnormality monitoring processor 22 includes an abnormality diagnosis processor 11 composed of a personal computer or the like.
Is connected online. Various processing information such as the progress of the diagnosis and the result of the diagnosis in the abnormality diagnosis processing device 11 is provided to the operator by the display means 41 via the changeover switch 40. The abnormality diagnosis device 10 and the display means 41 constitute the abnormality diagnosis device 10. The changeover switch 40 is operated by an operator to connect the abnormality monitoring processing device 22 and the display means 41 during normal monitoring, and causes the display means 41 to function as a monitor display means. On the other hand, when an abnormality occurs,
And the display means 41 are connected, and the display means 41 is made to function as a monitoring display means.

The abnormality monitoring processor 22 includes a vibration sensor 21
And a terminal control unit 50 for inputting detection signals from various types of monitoring sensors (for example, see Japanese Unexamined Patent Application Publication No.
No. 44533). The vibration sensor 21 is an acceleration pickup, and can be installed at any position and in any direction with respect to the rotating machine 30 to be monitored and diagnosed. Normally, as shown in FIG. 1, it is installed so that vibrations in three directions of an axial direction (X direction), a horizontal direction (Y direction), and a vertical direction (Z direction) can be captured. Further, in the rotating machine 30 of FIG. 1, the rotating machine 30 is installed at at least two predetermined positions of a horizontal centrifugal pump 31 and a motor 32.

FIG. 2 shows a part of the terminal controller 50 in detail. The amplifier 51 is attached to the vibration sensor 21 from the left side in the figure.
Is connected. The amplifier 51 is branched into two parts, and in the upper part of the figure, a high-pass filter 52, a detector 53, a first average value processor 54, a sampling A / D converter 55, and a center value extraction processor 56 are arranged in this order. Are arranged. On the other hand, on the lower side of the figure, a low-pass filter 57, a speed conversion unit 58, and a detection unit 5
9, second average processing unit 60, sampling A / D conversion unit 6
1. Each processing unit is arranged in the order of the central value extraction processing unit 62. These merge at the right side in the figure and are connected to the digital transmission unit 63. A monitoring unit (not shown) is provided downstream of the digital transmission unit 63. The monitoring unit is configured to operate an alarm unit that notifies an operator of an abnormality of the rotating machine when a signal received from the digital transmission unit 63 is equal to or greater than a specified value.

The operation of the terminal control unit 50 will be described. The acceleration signal output from the vibration sensor 21 is amplified by the amplifier 51, and the output is branched into two. One acceleration signal passes through a high-pass filter 52 and is detected by a detection unit 53.
The average value processing section 54 performs average value processing. By performing the averaging process in this manner, the transmission amount is significantly reduced as compared with the case where the output of the amplifier 51 is transmitted as it is. First
The acceleration information that has been averaged by the average value processing unit 54 and converted into DC is sampled by the sampling A / D conversion unit 55. After that, it is converted into a digital value, and the central value extraction processing unit 56 takes the central value of the three sampling values, removes the sudden value, and sends it to the digital transmitting unit 63.

The other acceleration signal amplified by the amplifier 51 and divided into two branches passes through a low-pass filter 57 and a speed converter 58.
Is integrated into a speed signal. Thereafter, the signal is detected by the detection unit 59 and averaged by the second average value processing unit 60. Second
The speed information that has been averaged by the average value processing unit 60 and converted into DC is sampled by the sampling A / D conversion unit 61. After that, it is converted into a digital value, and the central value extraction processing section 62 takes the central value of the three sampling values, removes the sudden value, and sends it to the digital transmitting section 63.

The abnormality diagnosis device 10 is based on information from the vibration sensor 21 sent from the abnormality monitoring device 20 on-line, and based on various judgment criteria stored as a knowledge base in the abnormality diagnosis processing device 11, Is configured to perform abnormality diagnosis. The information obtained by the vibration sensor 21 includes four pieces of vibration information including a vibration level, a vibration frequency band (a change ratio between the vibration speed and the vibration acceleration), a vibration direction, and a rising form of the vibration (a rising form of the vibration speed and the vibration acceleration).
It is a total of ten pieces of information including four operation information of presence / absence of other operation condition change, details of change, discharge pressure state, current value state, and two senses information of sound state and lubricating oil state.
At this time, the progress of the diagnosis, the result of the diagnosis and the like are notified to the operator on the display means 41. In the abnormality diagnosis processing device 11, in particular, a change pattern of three factors of a vibration speed, a vibration acceleration, and a vibration direction corresponding to each abnormality cause of the rotating machine 30 is previously input and stored. By comparing the change patterns of the three factors corresponding to the causes of these abnormalities with the vibration information obtained from the vibration sensor 21, the cause of the abnormality of the rotating machine 30 is estimated.

For example, in the separation by the vibration frequency band,
In the case of an imbalance abnormality, a misalignment abnormality, or the like, a low-frequency acceleration signal is output from the vibration sensor 21, and this output is amplified by the amplifier 51. The output in this case can pass through the low-pass filter 57, but cannot pass through the high-pass filter 52. Therefore, the output that has passed through the low-pass filter 57 is integrated by the speed conversion unit 58 to become a speed signal,
The output of the average value processing unit 60 increases. In other words, the level of the vibration speed is high, but the level of the vibration acceleration is low. On the other hand, if the bearing is abnormal, the vibration sensor
An acceleration signal having a high frequency component is output from 21, and this output is amplified by the amplifier 51. In this case, the output is a high-pass filter
52 can pass, but cannot pass through the low-pass filter 57. Therefore, the output of the first average value processing unit 54 that has passed through the high-pass filter 52 increases. In other words, the level of the vibration acceleration is high, but the level of the vibration speed is low. As described above, the abnormality diagnosis device 10 can diagnose the abnormality by the correspondence between each cause of the abnormality and the vibration frequency band.

Further, in the classification based on the size in each vibration direction, in the case of misalignment abnormality or the like, the axial direction (X in FIG. 1)
Direction) is often higher than the vibration level in the horizontal direction (Y direction in FIG. 1). On the other hand, in the case of backlash or abnormal contact, the vibration level in the vertical direction (Z direction in FIG. 1) is higher than the vibration level in the horizontal direction (Y direction in FIG. 1). As described above, the abnormality diagnosis device 10 can diagnose an abnormality by correspondence between each cause of the abnormality and the magnitude of the vibration level for each vibration direction.

Further, in the classification based on the history of change (trend) of the vibration, it is determined whether each vibration value (magnitude of vibration speed and vibration acceleration) has rapidly risen in a short period, or has gradually increased over a long period of time. Estimate the cause of the abnormality by taking this into account. The abnormality monitoring device 20 can store each vibration value for a long period (for example, a maximum of ten years). That is, in the case of poor lubrication of the bearing portion, each vibration value often rises sharply. On the other hand, in the case of a contact abnormality, when the contact starts, each vibration value tends to gradually increase while repeatedly increasing and decreasing. As described above, the abnormality diagnosis device 10 can diagnose an abnormality by correspondence between each cause of the abnormality and the process (trend) of the change of the vibration.

In the present embodiment, abnormality of the rotating machine is diagnosed as follows.

First, in a normal state, a changeover switch
The abnormality monitoring processor 22 and the display means 41 are connected by 40, and the operating state of the rotating machine 30 is constantly monitored by the abnormality monitoring device 20. At this time, the display means 41 functions as a monitoring display means, and the operator is shown a monitoring display for monitoring. On the other hand, when an abnormality occurs, the abnormality monitoring device 20 issues an alarm and displays the fact on the display means 41. The operator who has confirmed the abnormality in the abnormality monitoring device 20 switches the changeover switch 40 to connect the abnormality diagnosis processing device 11 and the display means 41 in order to take measures thereafter,
The cause of vibration is estimated by the abnormality diagnosis device 10. In this case, the display means 41 functions as a diagnostic display means, and the operator can interactively watch the rotating machine 30 while watching the display as needed.
Continue to diagnose abnormalities.

According to this embodiment, the following effects can be obtained. That is, the abnormality diagnosis device 10 stores in advance the change pattern including at least three factors of the vibration speed, the vibration acceleration, and the vibration direction of the rotating machine 30 and the cause of the abnormality of the rotating machine 30 in association with each other. For this reason, the abnormality diagnosis of the rotating machine 30 can be performed by collating the detection signal obtained from the vibration sensor 21 with the change pattern of these three factors when an abnormality occurs. Since the abnormality diagnosis at this time is an abnormality diagnosis in which at least three factors of the vibration speed, the vibration acceleration, and the vibration direction are considered, more accurate abnormality diagnosis can be performed as compared with the related art.

In the abnormality monitoring device 20, a vibration sensor
The acceleration signal output of 21 is branched into two. One of the outputs is averaged by an average processing unit 54. The output of the other of the two branches is integrated by the speed conversion unit 58 and converted into a speed signal, and the speed signal is averaged by the average value processing unit 60. For this reason, it is possible to easily obtain vibration information such as a vibration speed and a vibration acceleration, which are information necessary for the diagnosis by the abnormality diagnosis device 10.

Further, the detection signals obtained from the vibration sensor 21 such as the vibration speed and the vibration acceleration are taken into the abnormality diagnosis device 10 online. Therefore, it is possible to eliminate the trouble of the operator manually inputting the information at the time of abnormality obtained by the abnormality monitoring device 20 to the abnormality diagnostic device 10 at the time of performing the diagnosis, and to avoid the possibility of erroneous diagnosis due to erroneous input. can do. Therefore, the usability is good and the practical abnormality diagnosis device 10 can be obtained.

Since the display means 41 is shared by the abnormality monitoring device 20 and the abnormality diagnosis device 10 and can be switched by the changeover switch 40, the operator can perform monitoring and diagnosis as a series of operations. Can be. further,
By sharing the display means 41, the installation space in the instrument room of the plant can be reduced, and the equipment cost can be reduced.

It should be noted that the present invention is not limited to the above-described embodiment, but includes other configurations that can achieve the object of the present invention. For example, the following modifications are also included in the present invention.

That is, in the above embodiment, the abnormality monitoring device
Various vibration information obtained by the 20 vibration sensors 21
Although it is configured to be automatically transmitted to the abnormality diagnosis device 10 online, other driving information and five senses information may also be automatically transmitted online from the abnormality monitoring device 20 to the abnormality diagnosis device 10. . The vibration information, driving information, and five senses information required for the abnormality diagnosis are manually input by an operator (off-line method).
May be entered. Further, the above-described online method and offline method may be combined to supplement the information by manual input by the operator when the diagnosis information is insufficient with only the online information from the abnormality monitoring device 20. However, information transmission between the abnormality monitoring device 20 and the abnormality diagnosis device 10 is desirably performed in an on-line manner, so that the labor of the operator for inputting information can be reduced.

In the above-described embodiment, the display means 41 is shared by the abnormality monitoring device 20 and the abnormality diagnosis device 10 and can be switched by the changeover switch 40. Display means may be separately provided for each of the control units 10. However, it is preferable that the display means 41 be shared, so that the operator can perform monitoring and diagnosis as a series of operations, and also reduce installation space and equipment costs in the instrument room of the plant. it can.

Further, in the above embodiment, the abnormality diagnosis device 10
Are the vibration level, vibration frequency band (change ratio between vibration speed and vibration acceleration), vibration direction, and vibration rising form (vibration velocity and vibration acceleration rising form) which are information from the vibration sensor 21; , Based on a total of ten pieces of information including the presence or absence of changes in other operating conditions, the details of the change, the state of the discharge pressure, the state of the current value, and the four senses of sound and lubricating oil. Although the abnormality diagnosis is performed, the diagnosis need not be performed using all of the information. In short, the abnormality diagnosis may be performed based on at least the three factors of the vibration speed, the vibration acceleration, and the vibration direction.

In the above-described embodiment, the vibration sensor 21 is an acceleration pickup. However, if information on the vibration speed, vibration acceleration, and vibration direction necessary for abnormality diagnosis by the abnormality diagnosis device 10 can be obtained, May be used. For example, a gap sensor or the like may be used, or a gap sensor and an acceleration pickup may be used in combination. Accordingly, the configuration of the terminal control unit 50 in the abnormality monitoring device 20 is also changed to the high-pass filter 52, the average value processing unit 54, the low-pass filter 57, the speed conversion unit 58, and the second average value processing unit shown in FIG. 60
It is not necessary to have a configuration having the above. In short, any configuration may be used as long as it is compatible with various sensors provided so that information on the vibration speed, vibration acceleration, and vibration direction can be obtained.

Further, in the above embodiment, the rotating machine 30 is constituted by the horizontal centrifugal pump 31 and the motor 32, but the object of diagnosis of the present invention is any rotating machine regardless of its size. For example, it may be a generator, a water wheel, a pump water wheel, a turbine, or the like, or may be a rotating part such as a rotor of a machine tool.

[0042]

As described above, according to the present invention,
Abnormality diagnosis is performed based on information of at least three factors of vibration speed, vibration acceleration, and vibration direction, so that accurate information can be provided to the operator when an abnormality occurs in the rotating machine, appropriate instructions can be given, and for example, monitoring can be performed. Integrating the display unit for diagnosis and the display unit for diagnosis has the effect of reducing equipment costs and installation space.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing one embodiment of the present invention.

FIG. 2 is a detailed configuration diagram showing a main part of the embodiment.

[Explanation of symbols]

 10 Error diagnosis device 11 Error diagnosis processing device 20 Error monitoring device 21 Vibration sensor 22 Error monitoring processing device 30 Rotating machine 40 Changeover switch 41 Display means 50 Terminal control unit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-154059 (JP, A) JP-A-5-72026 (JP, A) JP-A-4-198729 (JP, A) JP-A-3-1987 233340 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01H 17/00 G01M 19/00

Claims (6)

(57) [Claims] 1. A vibration speed, vibration acceleration and vibration of a rotating machine.
Change pattern including three factors of moving direction and abnormality of the rotating machine
The cause is stored in association with the cause in advance, and the vibration of the rotating machine is
A detection signal obtained from a vibration sensor for detecting motion and
Abnormality monitoring is performed by checking the change pattern.
By comparing with the detection signal obtained from the vibration sensor
The cause of the abnormality of the rotating machine corresponding to the change pattern
An abnormality diagnosis method for a rotating machine that recognizes and diagnoses an abnormality , wherein a detection signal obtained from the vibration sensor divides an acceleration signal output of the vibration sensor into two, and averages one of the acceleration signal outputs. An abnormality diagnosis method for a rotating machine, wherein the speed signal obtained by integrating the output of the other of the two branched acceleration signals and converting it into a speed signal is subjected to an average value processing. 2. The abnormality diagnosis method for a rotating machine according to claim 1 , wherein the acceleration signal output of the vibration sensor is divided into two using a low-pass filter and a high-pass filter, and the output passing through the low-pass filter is integrated to obtain a speed. A method for diagnosing abnormality of a rotating machine, comprising: averaging a speed signal obtained by converting the signal into a signal; and averaging an output having passed through the high-pass filter. 3. A diagnosis method of the rotating machine according to claim 1 or 2, display diagnostic for a display for the abnormality diagnosis based on the monitoring display this information for displaying the information obtained by the abnormality monitoring And a method for diagnosing abnormalities of the rotating machine, wherein the method is switched and displayed. 4. A vibration sensor for detecting vibration of a rotating machine.
And three of vibration speed, vibration acceleration and vibration direction of the rotating machine.
The change pattern including factors and the cause of abnormality of the rotating machine
The detection signal obtained from the vibration sensor
Abnormality that monitors abnormalities by comparing the signal with the change pattern
A monitoring processor and an abnormality monitoring processor for obtaining from the vibration sensor.
Corresponding to the change pattern compared with the detected detection signal
Abnormality diagnosis for recognizing the cause of abnormality of the rotating machine and performing abnormality diagnosis
; And a use processor, detection signals obtained by the vibration sensor, the acceleration signal output of the vibration sensor is bifurcated, as well as the average value processing an acceleration signal output while branched, branched other An abnormality diagnosis device for a rotating machine, wherein an average value of a speed signal obtained by integrating an acceleration signal output and converting it into a speed signal is processed. 5. The abnormality diagnosis device for a rotating machine according to claim 4 , wherein a low-pass filter and a high-pass filter for bifurcating the acceleration signal output of the vibration sensor, and an average value processing of the output passing through the high-pass filter. An average value processing unit; a speed conversion unit that integrates an output that has passed through the low-pass filter and converts the output into a speed signal; and a second average value process that averages the speed signal converted by the speed conversion unit. An abnormality diagnosis device for a rotating machine, comprising: 6. The abnormality diagnosis device for a rotating machine according to claim 4 or 5 , wherein a monitoring display based on information obtained by an abnormality monitoring processing device and information on the monitoring display by the abnormality diagnosis device. An abnormality diagnosis device for a rotating machine, comprising: display means for switching and displaying a display for diagnosis obtained in the above manner.