JP2001133364A - Contact detecting and monitoring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make an expensive judgment mechanism for contact detecting and monitoring device switchably operable so as to be jointly usable in a plurality of rotary machines to solve the problem that it could not be introduced because of its expensiveness and provide a more precise contact detecting and monitoring device. SOLUTION: In this contact detecting and monitoring device having a detector and the judgment mechanism for judging the contact between the rotating part and stationary part of a rotary machine on the basis of the output signal of the detector, the detector is set independently on each of a plurality of rotary machines and connected to one common judgment mechanism, and the judgment mechanism comprises a detector sensitivity regulating mechanism for receiving the output signal of the detector to regulate the sensitivity, a contact judgment mechanism connected to the detector sensitivity regulating mechanism and a contact judgment setter for setting a contact judgment condition to judge the contact, and a display mechanism for displaying the judgment result. This device comprises a selecting circuit for connecting the detector to the detector sensitivity regulating mechanism according to the rotary machine to be subjected to contact detection every rotary machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to all devices for detecting and monitoring the contact between a rotating part and a stationary part of a rotating machine, and in particular, confirming contact in a low-speed rotation state at the time of startup of a turbine or the like. It relates to a monitoring instrument applicable to measurement.

[0002]

2. Description of the Related Art In general, contact between a rotating part and a stationary part of a rotating machine causes abnormal vibration, and when the degree of contact is large, it is a serious abnormal event for the rotating machine which leads to breakage of the machine. . Therefore, conventionally, a contact monitoring device is provided for a high-speed rotating machine or a large-sized rotating machine so that the contact can be detected at a small time.

[0003] In a steam turbine or the like, before rotating at a high speed, it is confirmed that there is no contact at a relatively low rotation state, and the operation is shifted to a high speed rotation. Has a device called a love check monitor.

[0004] As shown in FIG. 13, the related art is provided with a contact detection / monitoring device (lab check monitor) 01 for each rotating machine (A and B in the illustrated example), and based on detection signals from a plurality of detectors 3. The discrimination mechanism 02 for each of the rotary machines A and B determines the contact.

[0005] The contact detection / monitoring device 01 such as a love check monitor detects minute vibrations and sounds caused by the contact and determines the presence or absence of the contact in relation to the rotation of the rotating body. This requires a sensitive detector 3 and advanced processing techniques for removing ambient noise, making it an expensive device as a monitoring instrument. In addition, since it is desired to detect vibrations and noises at a portion of the rotating machine where there is a possibility of contact with many parts, it is necessary to install a large number of detectors 3 on one rotating machine. This causes the monitoring device 01 to be expensive.

Accordingly, such a contact detection / monitoring device 0
Providing one for each rotating machine was costly.

[0007]

As described above, the contact detection / monitoring device according to the prior art is expensive, so that even if the necessity is known, the equipment cannot be actually installed, and the operator goes to the site. Many people rely on simple methods such as checking the machine with ears.

According to the present invention, a discriminating mechanism of an expensive contact detection / monitoring device can be commonly used by a plurality of rotating machines,
An object of the present invention is to provide a contact detection / monitoring device with higher accuracy, which enables switching operation that was impossible with a monitoring instrument according to the prior art, eliminates problems that could not be introduced due to high cost, and provides a more accurate contact detection / monitoring device. It is.

[0009]

Means for Solving the Problems (1) The present invention has been made to solve the above-mentioned problems, and the
A contact detection / monitoring device having a detector and a determining mechanism for determining contact between a rotating part and a stationary part of the rotating machine based on an output signal of the detector, wherein the detector comprises a plurality of rotating machines. , Each of which is separately installed and connected to one common discriminating mechanism, the discriminating mechanism receives an output signal of the detector and adjusts its sensitivity, a detector sensitivity adjusting mechanism, A contact discriminating mechanism connected to a contact discriminating setting device for setting discriminating conditions, and a display mechanism for displaying a discrimination result and the like, and a contact detecting mechanism for detecting contact for each of the rotating machines; A contact detection / monitoring device characterized by comprising a selection circuit connected to the detector sensitivity adjustment mechanism in accordance with a rotating machine.

According to the first means, in the conventional apparatus, the detector for each rotary machine has to be connected to a dedicated discriminating mechanism for each rotary machine. Each had to be installed, but the detectors installed on different rotating machines were both
Since it is connected to one discriminating mechanism common to rotating machines via a selection circuit inside the discriminating mechanism, by switching the selection circuit, one discriminating mechanism detects and detects signals from detectors of a plurality of rotating machines. Monitoring can be performed.

(2) As a second means, in the contact detection / monitoring device provided with the detector of the first means and the discrimination mechanism, the discrimination mechanism includes a plurality of the detector sensitivity adjustment mechanisms, Connecting the detector to a separate detector sensitivity adjustment mechanism for each of the rotary machines, selecting the detector sensitivity adjustment mechanism by a selection circuit in accordance with the rotary machine that performs contact detection, and connecting to the contact determination mechanism. An object of the present invention is to provide a contact detection / monitoring device characterized by the following.

According to the second means, in addition to the features of the first means, the signal after the sensitivity is optimally adjusted by the detector sensitivity adjusting mechanism provided for each rotary machine is selected and switched by the selection circuit. So that it can be used for contact detection and monitoring.
Even if a detector having a different sensitivity is used depending on the rotating machine, an operation of re-adjusting the sensitivity every time the rotating machine is switched is not required.

(3) As a third means, in the contact detection / monitoring device according to the first means or the second means, the discrimination mechanism includes the contact discrimination setting device which is separate for each rotary machine, A contact detection / monitoring device characterized by comprising a circuit for selecting the contact discriminating setter in accordance with the rotating machine performing the detection.

According to the third means, in addition to the features of the first means or the second means, the contact discriminating mechanism can detect and monitor the contact by using the contact discriminating setting device dedicated to each rotary machine by the selection circuit. With such an arrangement, even when a different discriminating set value is required depending on the rotating machine, it is not necessary to adjust the discriminating set value of the discriminating setter every time the rotating machine is switched.

(4) As a fourth means, in the contact detection / monitoring device according to the first means or the second means, the display mechanism stores and holds state information during a monitoring operation separately for each rotating machine. A mechanism for selecting a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information in accordance with the rotating machine that performs the contact detection. An object of the present invention is to provide a contact detection / monitoring device characterized by the following.

According to the fourth means, in addition to the features of the first means or the second means, a storage circuit for the state information during the monitoring operation dedicated to each rotary machine by the selection circuit, and the storage of the discrimination result information. It is configured to selectively connect the holding mechanism and record data, and to display the status and result of contact detection / monitoring of the rotating machine on the selected side on the display. Also, information of each rotating machine up to that time is not lost.

(5) As a fifth means, in the contact detecting / monitoring device according to the first means or the second means, a measurement start signal from the rotating machine side is used to adjust the contact with the rotating machine which performs contact detection. A contact detection / monitoring device is provided, wherein the detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit.

According to the fifth means, in addition to the features of the first means or the second means, a measurement start signal corresponding to each rotating machine is inputted from the outside to the discriminating mechanism, and the signal inside the discriminating mechanism is inputted by this signal. The selection circuit can be switched between the detector of the relevant rotating machine and the detector sensitivity adjustment mechanism, so that the switch operation to switch each mechanism in the discrimination mechanism according to the rotating machine to be selected can be performed without relying on obtaining If there is a measurement start signal that has been conventionally sent from the automatic turbine control device or the like to each dedicated discriminating mechanism, the measurement can be switched only by that signal.

(6) As a sixth means, in the contact detection / monitoring device according to the third means, the detector and the detector are arranged in accordance with the rotating machine which performs contact detection by a measurement start signal from the rotating machine. A contact detection / monitoring device is provided, wherein a detector sensitivity adjustment mechanism is connected to the contact determination mechanism by a selection circuit, and the contact determination setting device is selected.

According to the sixth means, in addition to the features of the third means, a measurement start signal corresponding to each rotating machine is inputted from the outside to the discriminating mechanism, and the selection circuit in the discriminating mechanism is rotated by the signal in response to the signal. It is possible to switch between the detector on the machine side and the detector sensitivity adjustment mechanism side, and the contact discrimination setting device is selected according to the rotating machine of the selected detector. The switch operation to switch the mechanism can be performed with the measurement start signal from each rotating machine side without depending on the acquisition, and if there is a measurement start signal that has been conventionally performed from the turbine automatic control device etc. to each dedicated discrimination mechanism , Can be switched only by that signal.

(7) As a seventh means, in the contact detection / monitoring device according to the fourth means, the detector and the detector are arranged in accordance with the rotating machine which performs contact detection by a measurement start signal from the rotating machine. A contact detection / monitoring device, wherein a detector sensitivity adjustment mechanism is connected to the contact determination mechanism by a selection circuit, and a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information are selected. I will provide a.

According to the seventh means, in addition to the features of the fourth means, a measurement start signal corresponding to each rotary machine is inputted from the outside to the discriminating mechanism, and the signal is inputted to the selecting circuit inside the discriminating mechanism by the signal. It can be switched to the detector on the machine side and the detector sensitivity adjustment mechanism side, and selects the storage and holding mechanism of the status information during the monitoring operation and the storage and holding mechanism of the discrimination result information according to the rotating machine of the selected detector. Therefore, the switch operation to switch each mechanism in the discrimination mechanism according to the rotating machine to be selected can be performed by the measurement start signal from each rotating machine side without depending on acquisition, and the conventional discrimination mechanism from the conventional turbine automatic control device etc. If there is a measurement start signal that has been performed for, switching can be performed using only that signal.

(8) As an eighth means, in the contact detection / monitoring device according to the first means or the second means, the discrimination mechanism includes a rotary machine switching mechanism to be measured. A switching circuit for supplying power to the detector of the rotating machine to be measured by the switching signal, and a circuit for disabling the operation of the contact discrimination mechanism for a certain period of time after the start of the power supply. A detector and a detector sensitivity adjustment mechanism connected to the contact discrimination mechanism by a selection circuit in accordance with the rotating machine performing the contact detection.

According to the eighth means, in addition to the features of the first means or the second means, when any of the rotary machines is not operating, the detector of the non-operating rotary machine is Since the device can be kept in the non-energized state, it is possible to safely inspect the device. In this case, when the rotating machine is operated and the detector is energized at the same time as the measurement is started, the operation of the detector is unstable at the beginning of energization, and an erroneous signal may be transmitted to the determination mechanism. In some cases, the operation of the contact determination mechanism is invalidated for a certain time after the switching signal of the measurement target rotary machine switching mechanism, thereby preventing an erroneous signal due to unstable operation at the beginning of energization.

(9) As a ninth means, in the contact detection / monitoring device according to the third means, the discrimination mechanism includes a rotary machine switching mechanism to be measured, and the measurement is performed by a switching signal of the rotary machine switching mechanism to be measured. A selection circuit for energizing a power supply to a detector of the target rotary machine; and a circuit for disabling operation of the contact determination mechanism for a certain period of time after the start of the energization, and the rotary machine for performing contact detection based on the switching signal. The contact detection / monitoring device is characterized in that the detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit in accordance with, and the contact determination setting device is selected.

According to the ninth means, in addition to the features of the third means, when any of the rotary machines is not operating, the detector of the non-operating rotary machine is kept in a non-energized state. Therefore, it is possible to safely check the equipment. In addition, by invalidating the operation of the contact determination mechanism for a certain period after the switching signal of the measurement target rotary machine switching mechanism, it is possible to prevent an erroneous signal due to unstable operation of each mechanism at the beginning of energization.

(10) As a tenth means, in the contact detection / monitoring device according to the fourth means, the discrimination mechanism includes a rotary machine switching mechanism to be measured, and the measurement is performed by a switching signal of the rotary machine switching mechanism to be measured. A selection circuit for energizing a power supply to a detector of the target rotary machine; and a circuit for disabling operation of the contact determination mechanism for a certain period of time after the start of the energization, and the rotary machine for performing contact detection based on the switching signal. The detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit in accordance with, and a storage and holding mechanism for the state information during the monitoring operation and a storage and storage mechanism for the determination result information are selected. Provide a contact detection / monitoring device.

According to the tenth aspect, in addition to the features of the fourth aspect, when any of the rotary machines is not operating, the detector of the non-operating rotary machine is kept in a non-energized state. Therefore, it is possible to safely check the equipment. In addition, by invalidating the operation of the contact determination mechanism for a certain period after the switching signal of the measurement target rotary machine switching mechanism, it is possible to prevent an erroneous signal due to unstable operation of each mechanism at the beginning of energization.

(11) Further, as an eleventh means,
Touch detection of any of the first to tenth means
In the monitoring device, at least once per rotation of the rotating machine,
A rotation signal transmitter that generates the same number of times per rotation is provided, and one rotation period information is obtained based on the rotation signal of the rotation signal transmitter, and a phase position during one rotation in which contact is detected by the detector is identified. A contact detection / monitoring device characterized by the above-mentioned configuration is provided.

According to the eleventh means, in addition to the features of any of the first means to the tenth means, the contact detection / monitoring device not only discriminates the presence or absence of the contact, but also its position and phase. Can be identified, and therefore, whether the contact is at one place or at multiple places.

(12) As a twelfth means, in the contact detection / monitoring device according to the eleventh means, the phase position during one rotation in which the contact is detected is stored, and the contact is detected at the same phase position a predetermined number of times or more. It is an object of the present invention to provide a contact detection / monitoring device characterized in that a contact alarm is issued when it occurs.

According to the twelfth means, in addition to the features of the eleventh means, the number of contacts can be grasped for each phase of the rotating shaft, and the random phase position generated by erroneous recognition due to noise or the like is generated. Contact detection can be reliably excluded. Therefore, it is possible to reliably identify a true contact event that is in contact with the same phase every rotation, and it is possible to provide a contact detection / monitoring device capable of issuing a very accurate and reliable contact alarm.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A contact detection / monitoring device according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic configuration diagram of a contact detection / monitoring device 1 according to the present embodiment.
A required number of detectors 3 for detecting the contact between the rotating part and the stationary part such as the casing are provided for each of the rotating machine A and the rotating machine B as many as necessary, and a discriminating mechanism 2 common to both rotating machines is provided. It is connected to the.

A detector sensitivity adjusting mechanism 10 for receiving a detection signal from the detector 3 and adjusting its sensitivity is provided in the discriminating mechanism 2.
And the output of the detector sensitivity adjustment mechanism 10 to the contact determination setter 3
A contact discriminating mechanism 20 for discriminating the presence or absence of a contact based on a contact discriminating set value set to 0, a display mechanism 40 for displaying status information during monitoring operation and discrimination result information, and a plurality of rotating machines (FIG. In 1, a switch 60 is provided as a selection circuit for selecting each of the detectors 3 of the rotary machine A and the rotary machine B) in units of the rotary machine and switching and connecting to the detector sensitivity adjustment mechanism 10.

The contact detecting / monitoring device 1 and its discriminating mechanism 2 have portions that differ in the configuration for each of the following embodiments, but are denoted by the same reference numerals 1 and 2 in each figure.
In addition, the other reference numerals having substantially the same functions are denoted by the same reference numerals.

In the above-described conventional apparatus, each rotating machine A
Alternatively, the B detector 3 can only be connected to the discriminating mechanisms 02 dedicated to the rotating machines A and B, respectively, and it is necessary to install the discriminating mechanisms 02 expensive as many as the number of rotating machines. In the embodiment, since the detectors 3 installed on the rotary machines A and B are both connected to the discriminating mechanism 2 common to both rotary machines via the switch 60 inside the detector 3, By switching the switch 60, contact detection and monitoring can be performed using the signal of the detector 3 of either the rotating machine A or the rotating machine B in accordance with the rotating machine that performs the contact detection.

The contact detection and detection according to the second embodiment of the present invention
The monitoring device 1 will be described based on the schematic configuration diagram of FIG.

As shown in FIG. 2, in the present embodiment, a dedicated detector sensitivity adjusting mechanism 11 and 1 for each rotary machine are provided corresponding to each detector 3 of each rotary machine A and B.
2 are provided. The outputs of the plurality of detector sensitivity adjustment mechanisms 11 and 12 are configured to be selected by a switch 61 as a selection circuit and switched to and connected to the contact discrimination mechanism 20, and otherwise the same as in the first embodiment described above. It is.

In the third embodiment and the following embodiments, the same parts as those in the first embodiment will be omitted from description, and different points will be mainly described.

In this embodiment, the switch 61 selects and switches the signal after the sensitivity is optimally adjusted by the detector sensitivity adjusting mechanisms 11 and 12 in accordance with the rotating machine that performs the contact detection, and switches the signal to detect and monitor the contact. Even if a detector having a different sensitivity is used depending on the rotating machine, it is not necessary to repeat the sensitivity adjustment every time the rotating machine is switched.

Touch detection and detection according to the third embodiment of the present invention
The monitoring device will be described with reference to FIGS. FIG.
FIG. 3A is a schematic configuration diagram of a contact detection / monitoring device 1 according to the present embodiment, and FIG. 3B is a schematic configuration diagram of a modified example thereof.

As shown in FIG. 3A, in the present embodiment, dedicated contact discriminating setters 31 and 32 are provided for the rotary machines A and B, respectively.

That is, the signal of the detector 3 is selected and switched by the switch 60 for each rotating machine and connected to one detector sensitivity adjusting mechanism 10. The output of the detector sensitivity adjustment mechanism 10 is connected to the contact discrimination mechanism 20,
A plurality of contact determination setting devices connected to the contact determination mechanism 20;
Here, the contact determination setting units 31 and 32 are connected via a switch 62 as a selection circuit so as to be selected according to the rotating machine that performs the contact detection. Therefore,
It is preferable that the switch 62 selects the detection signal and the contact determination set value of the same rotating machine in synchronization with the switch 60.

In the present embodiment, the switch 62 is arranged so that the contact discriminating mechanism 20 can detect and monitor contact using the contact discriminating setting devices 31 and 32 dedicated to each rotating machine. Even when a different determination set value is required, it is not necessary to adjust the determination set value each time the rotating machine is switched.

In this embodiment, FIG.
As shown in FIG. 3, two contact discriminating mechanisms 21 and 22 are provided, and a combination of contact discriminating setting units 31 and 32 is independently configured, and the rotating machine A or B is provided in each combination unit. The output of the detector sensitivity adjustment mechanism 10 and the switch 6
The connection may be switched via 2 '.

Even in the case of the above-mentioned modification, FIG.
An effect similar to that of (a) can be obtained.

In the third embodiment, in FIG. 3, the detector 3 is selectively switched by a switch 60 for each rotating machine in the same manner as in FIG. 1 of the first embodiment. However, as shown in FIG. 2 of the second embodiment, the detector 3 is connected to dedicated detector sensitivity adjustment mechanisms 11 and 12 for each rotating machine, and a switch 61 is connected.
And the detector sensitivity adjusting mechanism 11 or 12 is the contact discriminating mechanism 2
It may be one that is selectively connected to a rotating machine that performs contact detection at 0, which is one of the present embodiments.

The contact detection and detection according to the fourth embodiment of the present invention
The monitoring device 1 will be described with reference to FIG.

As shown in FIG. 4, in the present embodiment, the display mechanism 40 is provided with a dedicated state information storage / holding mechanism 45 and 46 for the monitoring operation corresponding to each rotary machine A or B, respectively. In addition, storage mechanisms 25 and 26 for dedicated determination result information are provided.

That is, the information of the contact discriminating mechanism 20 and the contact discriminating setter 30 is stored and maintained by the switch 63 as a selection circuit in a state information storage / holding mechanism 45 which is selectively monitored in accordance with the rotary machine performing the contact detection. Or 46, it is switched and connected to the storage and holding mechanism 25 or 26 of the determination result information.

In this embodiment, the switch 63 is a storage / holding mechanism 45 for state information during a monitoring operation dedicated to each rotating machine.
And 46, and the storage and holding mechanism 25 for the determination result information
And 26 are selectively connected to record data, and the display 41 is capable of displaying the state and result of contact detection / monitoring of the selected rotating machine. Therefore, even if the rotary machines are switched, the information of each rotary machine up to that point is not lost.

Although not shown in FIG. 4, a selection circuit for selectively switching the state information storage and holding mechanisms 45 and 46 and the determination result information storage and holding mechanisms 25 and 26 during the monitoring operation to the display 41 for connection. If you provide a switch as
Switching between the rotating machines A and B can be switched and displayed even during the measurement, and the same parallel operation as when the dedicated discriminating mechanism 2 is used for each rotating machine is also possible.

In the fourth embodiment, as shown in FIG. 1 of the first embodiment described above, the detector 3 is selectively switched by the switch 60 for each rotating machine in FIG. However, as shown in FIG. 2 of the second embodiment, the detector 3 is connected to dedicated detector sensitivity adjustment mechanisms 11 and 12 for each rotating machine, and a switch 61 is connected.
And the detector sensitivity adjusting mechanism 11 or 12 is the contact discriminating mechanism 2
0 may be selectively connected, which is one of the present embodiments.

The contact detection and detection according to the fifth embodiment of the present invention
The monitoring device 1 will be described with reference to the schematic configuration diagram of FIG.

As shown in FIG. 5, the discriminating mechanism 2 is provided with individual detector sensitivity adjusting mechanisms 11 and 12 corresponding to the detectors 3 of the rotary machines A and B, and a rotary machine discriminating mechanism 50 to be measured. Is provided, and measurement start signals 71 and 72 set for each of the rotating machines A and B are input.

The switching signal as one of the outputs of the rotary machine discrimination mechanism 50 to be measured is supplied to the detector sensitivity adjustment mechanisms 11 and 12.
Is selectively connected as an operation signal to a switch 61 connected to the contact determination mechanism 20. The measurement start signal as one of the outputs is connected to the contact determination mechanism 20 side.

In the present embodiment, measurement start signals 71 and 72 corresponding to each rotary machine A or B are externally input to the target rotary machine discriminating mechanism 50 of the discriminating mechanism 2,
The internal switch 61 can be automatically switched to the detector sensitivity adjustment mechanism 11 or 12 on the rotating machine side in accordance with the output of the rotating machine discriminating mechanism 50 to be measured by this signal in accordance with the rotating machine that performs contact detection.

In the fifth embodiment, as shown in FIG. 2 of the second embodiment, the detector 3 is provided with a dedicated detector sensitivity adjusting mechanism 11 and 12 for each rotating machine. And the switch 61 selectively connects the detector sensitivity adjusting mechanism 11 or 12 to the contact discriminating mechanism 20. However, as in the second embodiment shown in FIG. Each time, the switch 60 may be selectively connected to the detector sensitivity adjustment mechanism 10, which is one of the present embodiments.

Although not shown in FIG. 5, the contact discriminating mechanism 2
0, as shown in FIGS. 3 (a) and 3 (b), the two contact discrimination setting devices 31 and
When the switch 32 is switched by the switch 62, or when the combinations 21, 31, and 22, 32 of the two contact determination mechanisms and the contact determination setting devices are switched by the switch 62 ', the external The internal switch 62 'can be automatically switched to the contact discriminator / contact discriminator on the rotary machine side in response to the output of the rotary machine discriminating mechanism 50 to be measured by the measurement start signals 71, 72 from.

Although not shown in FIG. 5, as in the fourth embodiment shown in FIG. 4, the state information storage / holding mechanisms 45, 46 and the determination result information storage / holding mechanism during which the display mechanism 40 performs the monitoring operation. If the switches 25 and 26 are selectively connected to the contact discriminating mechanism 20 and the contact discriminating setting device 30 by switching with the switch 63, the rotation of the measurement target by the external measurement start signals 71 and 72 is performed similarly to the switch 61. The internal switch 6 is automatically turned on by the output of the machine discrimination mechanism 50.
3 can be switched to the storage / holding mechanism side of the status information and the determination result information during the monitoring operation of the rotating machine.

Further, it goes without saying that the discrimination mechanism 2 may be provided with all the automatic switching of each mechanism by the switches 61, 62 or 62 ', 63 as the above selection circuit.

As described above, according to this embodiment, the switch operation for switching each mechanism in the discrimination mechanism 2 in accordance with the rotating machine to be selected can be performed without relying on the acquisition and further by using an external automatic turbine control device. Without any modification, a signal for switching is not added, and if there is a measurement start signal that has been sent from the automatic turbine control device or the like to each dedicated discriminating mechanism 2, switching can be performed using only that signal. It is convenient.

The contact detection and detection according to the sixth embodiment of the present invention
The monitoring device 1 will be described with reference to FIG.

As shown in FIG. 6, a power supply 15 for the detector and a power supply 15 for the detector are provided in the discriminating mechanism 2 by the rotary machines A and B.
A switch 64 as a selection circuit for selectively switching connection to each of the detectors 3, and a rotating machine switching mechanism 51 to be measured, and a switching signal, which is one of the outputs of the rotating machine switching mechanism 51, is provided by the switch 64. The measurement start signal as one of the outputs is connected to the time
And is connected to the contact discrimination mechanism 20 side.

In this embodiment, when either of the rotary machines A or B is not operating, the detector 3 of the non-operating rotary machine can be kept in a non-energized state.

That is, the rotary machine switching mechanism 51 to be measured
Is configured to selectively connect the detector power supply 15 and the detector 3 of the rotating machine to be measured in accordance with a rotating machine which performs contact detection by an appropriate input and a switching signal which is one of its outputs. The switch 64 is operated, and the switch 61 for switching the detector sensitivity adjustment mechanisms 11 and 12 is operated.

The above input may be an input by direct operation of the discriminating mechanism 2 or an appropriate external input, for example, an online input from each of the rotary machines A and B as in the fifth embodiment. You may.

In the sixth embodiment, as shown in FIG. 2 of the second embodiment, the detector 3 is provided with a dedicated detector sensitivity adjusting mechanism 11 and 12 for each rotary machine. And the switch 61 is used to selectively connect the detector sensitivity adjustment mechanism 11 or 12 to the contact determination mechanism 20. However, as in FIG. 1 of the first embodiment, the detector 3 is Each time, the switch 60 may be selectively connected to the detector sensitivity adjustment mechanism 10, which is one of the present embodiments.

Although not shown in FIG. 6, similar to the fifth embodiment described with reference to FIG.
And the contact discrimination setting device 30, the two contact discrimination setting devices 31,
When the switch 32 is switched by the switch 62, or when the combination 21, 31, and 22, 32 of the two contact determination mechanisms and the contact determination setting devices are switched by the switch 62 ', the measurement is further performed in the same manner as the switch 61. The internal switch 62 is automatically set by the switching signal of the output of the target rotating machine switching mechanism 51, and the contact discriminator / setting unit on the corresponding rotating machine side;
It can be switched to a contact determination mechanism.

Although not shown in FIG. 6, the aforementioned FIG.
As shown in the fourth embodiment, the state information storage / holding mechanisms 45 and 46 and the determination result information storage / holding mechanisms 25 and 26 are switched by the switch 63 while the display mechanism 40 is performing the monitoring operation, and the contact determination mechanism 20 and the contact As long as the switch is selectively connected to the discriminating setter 30, as in the case of the switch 61,
The internal switch 63 can be automatically switched to the storage / holding mechanism side of the state information and the determination result information during the monitoring operation of the rotating machine.

Further, the above switches 61, 64, 62
Alternatively, it is needless to say that the discrimination mechanism 2 may be provided with all the automatic switching of each mechanism by 62 'and 63.

According to the present embodiment, the detectors 3 and the like on the rotating machine that are not operating are not energized, so that the equipment can be inspected safely. However, when the corresponding rotating machine is operated next and the detector 3 is energized at the same time as the start of the measurement, the operation of the detector 3 is unstable at the initial stage of energization, and an erroneous signal is transmitted to the determination mechanism 2. There is a risk.

Therefore, in this embodiment, the rotary machine switching mechanism 51 to be measured is provided with a switch 64 for supplying power to the detector,
And a switch 61 for switching between the detector sensitivity adjustment mechanisms 11 and 12 (also a contact determination setting device or a switch 62 for switching the contact determination mechanism, state information storage and holding mechanisms 45 and 46 during monitoring operation, and a determination result). Switch 6 for switching between information storage and holding mechanisms 25 and 26
3) The operation of the contact determination mechanism 20 is switched through a timed circuit 80 for starting a measurement with a certain time delay after the switching, in synchronization with the timing of switching to the rotating machine that performs the contact detection. I have. For this reason, it is possible to prevent an erroneous signal due to unstable operation at the beginning of energization.

Next, a contact detection / monitoring device 1 according to a seventh embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, the discrimination mechanism 2 of the contact detection / monitoring device 1 according to the first to sixth embodiments has a mechanism for discriminating the contact phase position from the contact detection signal 3a from the detector 3. FIG. 7 is an explanatory diagram of a touch phase position identification mechanism to be added, and FIG. 8 is a processing flowchart thereof.

In this embodiment, as shown in FIG. 7, in addition to the detector 3 for detecting contact, a rotating shaft 4 for detecting contact is used.
A rotation signal transmitter 72 installed on the same axis or on a rotation axis that rotates synchronously with the rotation axis 4, and using the rotation signal K therefrom, the rotation angle position on the rotation axis 4 where the contact occurred That is, the phase is identified.

In the embodiment shown in FIG. 7, as the rotation signal K of the rotation signal transmitter 72, for example, a detection end such as a notch 4a (or a projection) is provided on the rotation shaft 4, and when the rotation shaft 4 makes one rotation, it becomes one.
The rotation signal K generated twice is used.

The rotation signal K is generated every time T during which the shaft makes one rotation. If the elapsed time from the same rotation signal K when the first contact occurs is measured and t1 is determined, and the elapsed time from the same rotation signal when the second contact is generated is defined as t2, T time is defined as the axis. Considering one round, the times t1 and t2 are the positions on the rotation axis where the contact has occurred, that is, the phases. The time difference td between t1 and t2 is 2
It becomes a position difference and a phase difference between the contact positions of each time.

Therefore, the time t until the next contact occurs
Is measured, it is determined that the contact occurs at the same position when the contact occurs every T time, and when there is more than one contact during one rotation, td is the position difference of each contact. ,
Each contact position can be identified and determined as a phase difference. However, conventionally, it was not possible to discriminate whether the contact was every time at the same position or a plurality of contacts at different phase positions because information on the contact position could not be grasped.

The processing flow of the contact phase position identification mechanism shown in FIG. 7 will be described with reference to FIG.

In the embodiment shown in FIG. 7, the rotation signal K is
Occurs once during rotation. This is shaped into a pulse signal P of 1 pulse / rotation. At the same time, the pulse interval T is measured and set as the cycle of one rotation of the shaft.

The contact detection signal 3a of the detector 3 is processed to generate a pulse R at the time of occurrence of the contact. 1 pulse /
The time ti from the rotation pulse signal P to the pulse R at the time of contact occurrence is measured. The ratio of the time ti to the pulse interval T is calculated to calculate the phase of the contact occurrence position (contact occurrence phase information) Φ
Find and store i.

As described above, in the present embodiment, the contact detection / monitoring device 1 can identify not only the presence / absence of a contact but also the position and phase thereof, and thus whether the contact is at one place or at a plurality of places. It will be identifiable.

In the present invention, no particular limitation is imposed on the contents of processing during processing of the signal from the detector 3 into the contact detection signal 3a. Any method may be used as long as noise is removed as a contact detection signal 3a that may be subjected to contact detection by performing appropriate processing based on the characteristics of the rotary machines A and B to be characteristics of the detector 3 to be used. . A commonly applied processing method is to detect an impact sound generated by contact with an acceleration detector, detect a waveform obtained through a band-pass filter that passes only the frequency band of the impact sound, and extract a signal of amplitude information. is there. There is a method in which the amplitude of this signal is determined by a comparator and a contact detection signal is generated with a certain amplitude or more.

[0085] Contact detection and detection according to the eighth embodiment of the present invention
The monitoring device 1 will be described with reference to FIGS.

This embodiment is the same as the above-described seventh embodiment, and is similar to the first to sixth embodiments.
In the discriminating mechanism 2 of the monitoring device 1, a mechanism for discriminating the contact phase position from the contact detection signal 3a from the detector 3 is added. FIG. 9 is an explanatory diagram of the added contact phase position discriminating mechanism, and FIG. It is a processing flow.

In this embodiment, as shown in FIG. 9, in addition to the detector 3 for detecting contact, a rotation signal K 'generated a plurality of times during one rotation of the rotating shaft 4 is used. For example, a detection end having N protrusions 4a 'and the like is provided on the circumference of the rotating shaft 4' or the rotating shaft that rotates synchronously with the rotating shaft 4 ', and the rotation signal of the rotation signal transmitter 73 is generated N times per rotation. To do it.

If there is one contact, a contact signal K 'is also generated every time N rotation signals are generated after the first contact is generated. If there is twice contact during one rotation of the rotating shaft 4 ',
The second contact occurs when nd rotation signals are generated after the first contact occurs. Consider N times as one round of axis nd
Each time becomes a position difference and a phase difference on the rotation axis where the contact occurs.

Therefore, the number of rotations nd of the rotation signal K 'until the next contact occurs is measured, and if a contact has occurred every N times, it is determined that the contact is at the same position. If there is a contact a plurality of times during rotation, nd can identify and determine each contact position as the position difference and phase difference of each contact. Conventionally, since it was not possible to grasp the information of the contact position, it was not possible to identify whether it was a contact at the same position every time or a plurality of contacts at different positions.

The processing flow of the contact phase position identification mechanism shown in FIG. 9 will be described with reference to FIG.

In the embodiment shown in FIG. 9, the rotation signal K 'is generated N times while the rotation shaft 4' makes one rotation. This is shaped into a pulse signal M of N pulses / rotation. Further, it processes the contact detection signal 3a and generates a pulse R at the time of occurrence of the contact.
The number of rotation pulses M from the pulse R at the time of contact occurrence to the pulse R at the time of the next contact occurrence, nd, is counted. If the number of rotation pulses is equal to or more than N, which is the number of rotation pulses for one rotation of the shaft, contact is made once during one rotation. It was judged that it was. The contact position is stored as contact position information and as the relative position and the origin of the phase.

If nd is within the number N of rotation pulses for one rotation of the rotation shaft, it is determined that contact has been made a plurality of times during one rotation. The relative phase φd of the contact occurrence relative position is obtained by calculating the ratio of the nd number to the rotation pulse number N of one rotation of the shaft. Further, when the contact occurrence time point pulse R is generated during one rotation, the contact is determined to be at a plurality of positions until the sum of nd reaches the number N of rotation pulses of one rotation of the shaft. The position and the relative phase φd are obtained, and the phase of each contact position (contact occurrence phase information) Φi (= φ1 + φ2 +... + Φi) is stored. Remember.

As described above, in the present embodiment, the contact detection / monitoring device 1 can not only identify the presence / absence of a contact but also its position and phase, and thus whether the contact is at one location or at multiple locations. It will be identifiable.

[0094] The contact detection and detection according to the ninth embodiment of the present invention are described.
The monitoring device will be described with reference to FIGS. In the present embodiment, a contact phase position identification mechanism is added to the above-described first to sixth embodiments, and a highly reliable contact alarm is provided by using the identified contact phase position information. Is added to the discrimination mechanism 2.

FIG. 11 is a processing flowchart of a contact alarm mechanism as a main part of the present embodiment, and FIG. 12 is a conceptual explanatory diagram of a contact number counter 90 which is a main part of the contact alarm mechanism.

In the present embodiment, the contact detection signal 3
a is stored together with the position / phase information on the rotation axis, and if a contact occurs at the same position / phase, it is determined that the contact is a true contact and an alarm is issued.

The contact information stores the state during which the rotating shaft rotates a plurality of times, and discriminates the contact at the same position when the number of contacts within a certain period is equal to or more than a specified number of times ma. According to this configuration, it is possible to exclude a portion that has conventionally been determined to be a contact due to noise or the like, so that the reliability of a contact alarm issued by the contact detection / monitoring device 1 is significantly improved.

In the present embodiment, a processing flow in which the contact alarm mechanism detects the occurrence of contact at the same phase position a plurality of times and issues an alarm will be described with reference to FIG.

As described in the seventh or eighth embodiment, the contact occurrence phase information Φi detected and stored is taken out, and the contact occurrence phase information Φi stored in the “contact number counter 90” shown in FIG. Compare with phase position Φi data. If the values are the same or close to each other, it is determined that the contacts are in the same phase.
Set data in Φy rows. After that, “contact present” is recorded at the position of Φyx in the column of the number x of the corresponding measurement times of the contact number counter 90.

The contact number counter 90 is provided with a column for storing measurement data for x times of rotation of the shaft so that data of the past x times can be referred to. Next, the number of “contacts” in the past x times is calculated for each contact phase position Φi,
If the number of times is equal to or greater than the alarm determination value ma in the predetermined number of times x, an alarm of “contact at the same phase position” is issued.

According to the present embodiment, the number of contacts can be grasped for each phase of the rotating shaft, and the contact detection at a random phase position generated by erroneous recognition due to noise or the like can be reliably excluded. . Therefore, it is possible to reliably identify a true contact event that is in contact with the same phase every rotation, and it is possible to provide a contact detection / monitoring device capable of issuing a very accurate and reliable contact alarm.

The embodiments of the present invention have been described above.
It is needless to say that the present invention is not limited to the above-described embodiment, and various changes may be made to the specific structure within the scope of the present invention.

For example, in the embodiment, two rotary machines A and B are described as the targets of contact detection. However, the present invention is not limited to the two, and may be an arbitrary plurality.

[0104]

(1) The present invention has been made in order to solve the above-mentioned problems, and in a device for detecting and monitoring the contact of a rotating shaft, conventionally, a dedicated discriminating mechanism is provided for each rotating machine. Can be changed and used in common for multiple rotating machines, and the reliability of true contact detection discrimination, which was insufficient with conventional discrimination mechanisms, has been improved. An object of the present invention is to provide a reliable contact detection / monitoring device.

According to the first aspect of the present invention, the contact detecting / monitoring device has a detector and a discriminating mechanism for discriminating the contact between the rotating part and the stationary part of the rotary machine based on the output signal of the detector. In the contact detection / monitoring device, the detectors are separately installed on a plurality of rotating machines and connected to a common one of the discriminating mechanisms, and the discriminating mechanisms receive output signals of the detectors and adjust their sensitivities. It has a detector sensitivity adjustment mechanism, a contact discrimination mechanism connected to the detector sensitivity adjustment mechanism and a contact discrimination setting device for setting a contact discrimination condition to discriminate a contact, and a display mechanism for displaying a discrimination result and the like. And a selection circuit for connecting the detector to the detector sensitivity adjusting mechanism in accordance with the rotary machine that performs contact detection for each of the rotary machines. Although there was no other way than to connect each rotating machine to a dedicated discriminating mechanism, it was necessary to install expensive discriminating mechanisms by the number of rotating machines, but detectors installed on different rotating machines were different. Both are connected to a single discriminating mechanism common to rotating machines via a selection circuit inside the discriminating mechanism. By switching the selection circuit, one discriminating mechanism contacts the signals of the detectors of a plurality of rotating machines. Detection and monitoring can be performed.

(2) A contact detecting / monitoring device comprising the detector according to claim 1 and the discriminating mechanism, wherein the discriminating mechanism comprises a plurality of the detector sensitivity adjusting mechanisms. A detector is connected to a separate detector sensitivity adjustment mechanism for each of the rotating machines, and the detector sensitivity adjustment mechanism is selected by a selection circuit in accordance with the rotating machine that performs contact detection and connected to the contact determination mechanism. Therefore, in addition to the effects of the invention described in claim 1, in addition to the effect of the invention, the signal after the sensitivity is optimally adjusted by the detector sensitivity adjusting mechanism provided for each rotary machine is selected and switched by the selection circuit to detect the contact.・ Since it is arranged so that it can be used for monitoring, even if a detector with different sensitivity is used for each rotating machine, it is not necessary to perform the sensitivity adjustment again every time the rotating machine is switched.

(3) The contact detection / monitoring device according to claim 1 or 2, wherein the discrimination mechanism includes the contact discrimination setting device which is separate for each rotary machine. Since a circuit for selecting the contact determination setter according to the rotating machine to be detected is provided, in addition to the effect of the invention according to claim 1 or 2, the contact circuit dedicated to each rotating machine is provided by the selection circuit. Since the contact discriminating mechanism is arranged so that contact detection and monitoring can be performed using the discriminator, even if a different discriminating set value is required for each rotating machine, the discriminating set value of the discriminating setter is set each time the rotating machine is switched. The operation of redoing the adjustment is not required.

(4) In the contact detecting / monitoring device according to the first or second aspect of the present invention, the display mechanism stores and holds state information during the monitoring operation separately for each of the rotating machines. A mechanism for selecting a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information in accordance with the rotating machine that performs the contact detection. With this configuration, in addition to the effects of the first or second aspect of the present invention, the selection circuit selectively connects the storage / holding mechanism for state information during monitoring operation dedicated to each rotary machine and the storage / holding mechanism for determination result information. It is configured to record data and to display the status and results of contact detection / monitoring of the rotating machine on the side selected on the display. It is not lost information of each of the rotating machine up to.

(5) In the contact detection / monitoring device according to the first or second aspect of the present invention, according to the contact detection / monitoring device according to the first or second aspect, the apparatus is adapted to the rotating machine which performs the contact detection by a measurement start signal from the rotating machine. Since the detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit, a measurement start signal corresponding to each rotary machine is provided in addition to the effects of the invention according to claim 1 or 2. Is input from the outside to the discriminating mechanism, and by this signal, the selection circuit inside the discriminating mechanism can be switched between the detector on the rotating machine side and the detector sensitivity adjusting mechanism side. A switch operation for switching each mechanism can be performed with a measurement start signal from each rotating machine side without depending on acquisition, and conventionally performed from a turbine automatic control device or the like to a dedicated discriminating mechanism. If there is a measurement start signal, the signal only at the switching can be.

(6) According to a fifth aspect of the present invention, in the contact detection / monitoring device according to the third aspect, the detector and the detector are adjusted to the rotating machine which performs the contact detection based on a measurement start signal from the rotating machine. Since the detector sensitivity adjustment mechanism is connected to the contact determination mechanism by a selection circuit and the contact determination setting device is selected, in addition to the effect of the invention of claim 3, the detection sensitivity adjustment mechanism corresponds to each rotary machine. A measurement start signal is input from the outside to the discriminating mechanism, and by this signal, the selection circuit inside the discriminating mechanism can be switched between the detector on the rotating machine side and the detector sensitivity adjusting mechanism side, and the rotation of the selected detector is performed. In order to select the contact discrimination setting device according to the machine, switch operation to switch each mechanism in the discrimination mechanism according to the rotating machine to be selected, measurement from each rotating machine side without depending on acquisition Start signal can, when there is the measurement start signal has been performed with respect to the conventional turbine automatic control system such as the dedicated discrimination mechanism from the signal only at the switching can be.

(7) The contact detection / monitoring device according to the fourth aspect of the present invention is the contact detection / monitoring device according to the fourth aspect, wherein the detector and the detector are adjusted in accordance with the rotating machine that performs the contact detection by a measurement start signal from the rotating machine. 5. The apparatus according to claim 4, wherein the detector sensitivity adjusting mechanism is connected to the contact determining mechanism by a selection circuit, and the storage and holding mechanism for the state information and the determination result information during the monitoring operation is selected. In addition to the effect of the invention, the measurement start signal corresponding to each rotating machine is input from the outside to the discriminating mechanism, and the detector and the detector sensitivity adjusting mechanism side of the corresponding rotating machine are selected by the selection circuit inside the discriminating mechanism by this signal. To select the storage and holding mechanism for the status information during the monitoring operation and the storage and holding mechanism for the determination result information in accordance with the rotating machine of the selected detector. The switch operation for switching each mechanism in the discrimination mechanism according to the rotating machine can be performed by the measurement start signal from each rotating machine side without depending on acquisition, and conventionally performed from the automatic turbine controller etc. to each dedicated discrimination mechanism. If there is a measurement start signal, switching can be performed only with that signal.

(8) The contact detecting / monitoring device according to claim 1 or 2, wherein the discriminating mechanism includes a rotary machine switching mechanism to be measured. A switching circuit for supplying power to the detector of the rotating machine to be measured by the switching signal, and a circuit for disabling the operation of the contact discrimination mechanism for a certain period of time after the start of the power supply. In addition to the effects of claim 1 or claim 2, the detector and the detector sensitivity adjustment mechanism are configured to be connected to the contact determination mechanism by a selection circuit in accordance with the rotating machine that performs When any of the rotating machines is not operating, the detector of the rotating machine on the non-operating side can be kept in a non-energized state, so that the equipment can be safely inspected. Also, in that case, the rotating machine will be operated and if the detector is energized at the same time as the measurement starts,
In the early stage of energization, the operation of the detector is unstable and there is a possibility that an erroneous signal may be transmitted to the discrimination mechanism.
By invalidating the operation of the contact determination mechanism for a certain time after the switching signal of the measurement target rotary machine switching mechanism, it is possible to prevent an erroneous signal due to unstable operation at the beginning of energization.

(9) In the contact detecting / monitoring device according to the third aspect, the discriminating mechanism includes a rotating machine switching mechanism to be measured, and the switching mechanism switches the rotating machine according to the switching signal of the rotating machine to be measured. A selection circuit for energizing power to a detector of the rotating machine to be measured and a circuit for disabling the operation of the contact determination mechanism for a fixed time after the energization is started, and the rotation signal for performing contact detection by the switching signal; The detector and the detector sensitivity adjustment mechanism are connected to the contact discrimination mechanism by a selection circuit in accordance with a machine, and the contact discrimination setting device is configured to be selected. In addition to the effects of the invention according to claim 3, When any one of the rotating machines is not operating, the detector of the rotating machine on the non-operating side can be kept in a non-energized state, so that the equipment can be safely inspected. In addition, by invalidating the operation of the contact determination mechanism for a certain period after the switching signal of the measurement target rotary machine switching mechanism, it is possible to prevent an erroneous signal due to unstable operation of each mechanism at the beginning of energization.

(10) In the contact detection / monitoring device according to the fourth aspect, the discriminating mechanism includes a rotary machine switching mechanism to be measured, and a switching signal of the rotary machine switching mechanism to be measured is provided by the switching signal of the rotary mechanism switching mechanism. A selection circuit for energizing power to a detector of the rotating machine to be measured and a circuit for disabling the operation of the contact determination mechanism for a fixed time after the energization is started, and the rotation signal for performing contact detection by the switching signal; A configuration in which the detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit according to a machine, and a storage mechanism for storing state information and a storage mechanism for determination result information during the monitoring operation are selected. Therefore, in addition to the effect of the invention of claim 4, when any of the rotating machines is not operating, the detector of the rotating machine on the non-operating side is kept in a non-energized state. Since it is bets, so it is safe to and inspection of equipment. In addition, by invalidating the operation of the contact determination mechanism for a certain period after the switching signal of the measurement target rotary machine switching mechanism, it is possible to prevent an erroneous signal due to unstable operation of each mechanism at the beginning of energization.

(11) Further, the invention of claim 11 provides the contact detection and detection method according to any one of claims 1 to 10.
In the monitoring device, at least once per rotation of the rotating machine,
A rotation signal transmitter that generates the same number of times per rotation is provided, and one rotation period information is obtained based on the rotation signal of the rotation signal transmitter, and a phase position during one rotation in which contact is detected by the detector is identified. Claim 1 to Claim 1
In addition to the effect of any one of the inventions described above, in addition to simply discriminating the presence / absence of contact, the position and phase thereof can be discriminated, and therefore, it is possible to discriminate whether the contact is one place or a plurality of places.

(12) According to a twelfth aspect of the present invention, in the contact detection / monitoring device according to the eleventh aspect, the phase position during one rotation when the contact is detected is stored, and the contact is detected at the same phase position a predetermined number of times or more. Is configured to issue a contact alarm when an error occurs, in addition to the effect of the invention of claim 11, it is possible to grasp the number of times of contact for each phase of the rotating shaft. It is possible to reliably exclude the detection of a contact at a random phase position. Therefore, it is possible to reliably identify a true contact event that is in contact with the same phase every rotation, and it is possible to provide a contact detection / monitoring device capable of issuing a very accurate and reliable contact alarm.

[Brief description of the drawings]

FIG. 1 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a first embodiment of the present invention.

FIG. 2 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a second embodiment of the present invention.

FIG. 3 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a third embodiment of the present invention.

FIG. 4 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a fourth embodiment of the present invention.

FIG. 5 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a fifth embodiment of the present invention.

FIG. 6 is a configuration conceptual diagram of a contact detection / monitoring device for a rotating machine according to a sixth embodiment of the present invention.

FIG. 7 is an explanatory diagram of a contact phase position identification mechanism which is a main part of a contact detection / monitoring device for a rotating machine according to a seventh embodiment of the present invention.

FIG. 8 is an explanatory diagram of a processing flow of the contact phase position identification mechanism of FIG. 7;

FIG. 9 is an explanatory diagram of a contact phase position identification mechanism which is a main part of a contact detection / monitoring device for a rotating machine according to an eighth embodiment of the present invention.

FIG. 10 is an explanatory diagram of a processing flow of the contact phase position identification mechanism of FIG. 9;

FIG. 11 is an explanatory diagram of a processing flow of a contact alarm mechanism which is a main part of a contact detection / monitoring device for a rotating machine according to a ninth embodiment of the present invention.

FIG. 12 is a conceptual explanatory view of a contact frequency counter which is a main part of the contact alarm mechanism of FIG. 11;

FIG. 13 is a diagram illustrating contact detection and detection of a rotary machine according to a conventional example of the present invention.
FIG. 2 is a conceptual diagram of a configuration of a monitoring device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Contact detection / monitoring apparatus 2 Discrimination mechanism 3 Detector 10, 11, 12 Detector sensitivity adjustment mechanism 20, 21, 22 Contact discrimination mechanism 25, 26 Storage and holding mechanism of discrimination result information 30, 31, 32 Contact discrimination setting device 40 Display mechanism 41 Indicator 45, 46 Storage and storage mechanism of state information during monitoring operation 50 Measurement target rotary machine discrimination mechanism 51 Measurement target rotary machine switching device 60, 61 Switch 62, 62 'Switch 63, 64 Switch 70, 71 Start measurement Signal 72, 73 Rotation signal transmitter 80 Timed circuit 90 Contact count counter

Claims (12)

[Claims] 1. A contact detection / monitoring device comprising a detector and a discriminating mechanism for discriminating contact between a rotating part and a stationary part of a rotating machine based on an output signal of the detector. A detector sensitivity adjusting mechanism that receives the output signal of the detector and adjusts the sensitivity thereof, the detector sensitivity adjusting mechanism receiving the output signal of the detector, and the detector sensitivity adjusting mechanism; It has a contact discriminating mechanism connected to a contact discriminating setting device for setting contact discriminating conditions and discriminating a contact, and a display mechanism for displaying a discrimination result and the like. A contact detection / monitoring device comprising a selection circuit connected to the detector sensitivity adjustment mechanism in accordance with the rotating machine. 2. The contact detection / monitoring device according to claim 1, wherein the detection mechanism includes a plurality of the detector sensitivity adjustment mechanisms, and the detector is provided for each of the rotating machines. A contact detection mechanism, wherein the detector sensitivity adjustment mechanism is connected to the contact discriminating mechanism by selecting the detector sensitivity adjustment mechanism by a selection circuit in accordance with the rotating machine that performs contact detection. Monitoring device. 3. The contact detection / monitoring device according to claim 1, wherein the discrimination mechanism includes the separate contact discrimination setting device for each of the rotating machines, and is adapted to the rotating machine that performs contact detection. A contact detection / monitoring device comprising a circuit for selecting the contact determination setting device. 4. The contact detection / monitoring device according to claim 1, wherein the display mechanism is a storage / holding mechanism for state information during a monitoring operation that is separate for each of the rotating machines, and a storage / holding of determination result information. A contact detection / monitoring device comprising a mechanism and a circuit for selecting a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information in accordance with the rotating machine performing the contact detection. . 5. The contact detection / monitoring device according to claim 1, wherein the detector and the detector sensitivity are adjusted in accordance with the rotating machine that performs contact detection by a measurement start signal from the rotating machine. A contact detection / monitoring device, wherein an adjustment mechanism is connected to the contact determination mechanism by a selection circuit. 6. The contact detection / monitoring device according to claim 3, wherein the detector and the detector sensitivity adjustment mechanism are selected in accordance with the rotating machine that performs contact detection, based on a measurement start signal from the rotating machine. A contact detection / monitoring device which is connected to the contact determination mechanism by a circuit and selects the contact determination setting device. 7. The contact detection / monitoring device according to claim 4, wherein the detector and the detector sensitivity adjustment mechanism are selected in accordance with the rotating machine that performs contact detection, based on a measurement start signal from the rotating machine. A contact detection / monitoring device which is connected to the contact determination mechanism by a circuit and selects a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information. 8. The contact detection / monitoring device according to claim 1, wherein the discriminating mechanism includes a rotary machine switching mechanism to be measured. A switching circuit for energizing the power supply to the detector of the rotating machine and a circuit for disabling the operation of the contact discriminating mechanism for a certain time after the start of the energization are provided. A contact detection / monitoring device, wherein a detector and the detector sensitivity adjustment mechanism are connected to the contact determination mechanism by a selection circuit. 9. The contact detection / monitoring device according to claim 3, wherein the discrimination mechanism includes a measurement target rotary machine switching mechanism, and the measurement target rotary machine is detected by a switching signal of the measurement target rotary machine switching mechanism. A selection circuit for energizing the power supply to the container and a circuit for disabling the operation of the contact determination mechanism for a fixed time after the energization is started,
A contact detection / monitoring device, wherein the detector and the detector sensitivity adjustment mechanism are connected to the contact discrimination mechanism by a selection circuit in accordance with the rotating machine that performs contact detection, and the contact discrimination setting device is selected. 10. The contact detection / monitoring device according to claim 4, wherein the discrimination mechanism includes a rotary machine switching mechanism to be measured, and the rotary machine to be measured is detected by a switching signal of the rotary machine switching mechanism to be measured. A switching circuit for energizing the power supply and a circuit for disabling the operation of the contact discriminating mechanism for a certain period of time after the energization is started. A contact detection / monitoring device, wherein a detector sensitivity adjustment mechanism is connected to the contact determination mechanism by a selection circuit, and a storage / holding mechanism for the state information during the monitoring operation and a storage / holding mechanism for the determination result information are selected. 11. The contact detection / monitoring device according to claim 1, further comprising: a rotation signal transmitter that generates the same number of times at least once per rotation of the rotating machine. A contact detection / monitoring device characterized in that one rotation period information is obtained based on a rotation signal of a rotation signal transmitter, and a phase position during one rotation in which a contact is detected by the detector is identified. 12. The contact detection / monitoring device according to claim 11, wherein a phase position during one rotation in which the contact is detected is stored, and a contact alarm is issued when a contact occurs at the same phase position a predetermined number of times or more. A contact detection / monitoring device, characterized in that the contact detection / monitoring device is configured to: