JP2005055015A - Abnormality notifying method and maintenance method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily know a degree of deterioration to abnormality, to accurately grasp a situation, to perform necessary maintenance and to reduce unnecessary maintenance. <P>SOLUTION: This abnormality informing method includes a process for detecting a status value relating to a factor of abnormality, a process for integrating an operation time of an apparatus in a state that the detected status value is less than a reference value, and a process for informing the information on the degree of deterioration to abnormality on the basis of the operation time of the apparatus integrated in the integrating process. This maintenance method includes a process for detecting the status value relating to the factor of abnormality, a process for integrating the operation time of the apparatus in a state that the detected status value is less than a reference value, and a process for informing the information on the degree of deterioration to the abnormality on the basis of the operation time of the apparatus integrated in the integrating process, and the maintenances of the apparatus and/or its peripheral devices are performed on the basis of the information on the degree of deterioration. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an abnormality notification method and maintenance method related to equipment such as a boiler.
[0002]
[Prior art]
Conventionally, for example, as a method of notifying an abnormality in a boiler, various sensors for detecting the state of a device are provided so as not to cause a complete failure, and when a predetermined value is exceeded, an alarm (prediction information) that a failure is approaching is issued. (See, for example, Patent Document 1).
[0003]
For example, a chemical injection device for preventing corrosion of a boiler is equipped with a level sensor that detects when the chemical is out of its chemical tank, and when the detected value of the sensor exceeds a reference value indicating that chemical is out, the boiler outputs prediction information. To do. Customers or maintenance personnel who have received such predictive information actually want to know how close they are to the abnormalities of damage due to scales in the can or reduced life due to corrosion of the boiler. However, the notified prediction information cannot be known, and the customer or the maintenance staff has to deal with the countermeasure after all.
[0004]
[Patent Document 1]
JP-A-1-155799
[Problems to be solved by the invention]
The problem to be solved by the present invention is to be able to easily know the degree of deterioration to an abnormality, enable more accurate grasp of the situation, perform necessary maintenance, and reduce unnecessary maintenance.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems. The invention according to claim 1 is a state value detection step of detecting a state value related to an abnormality factor, and an influence time when the state detection value is equal to or less than a reference value. Including an influence time integrating step of integrating the above and a deterioration degree informing step of informing information on the degree of deterioration to abnormality by the influence time.
[0007]
According to a second aspect of the present invention, there is provided a detection step for detecting a state value related to an abnormality factor, an integration step for integrating an influence time when the state detection value is equal to or less than a reference value, and the influence integrated by the integration step. And a notification step of notifying the deterioration degree information to the abnormality due to time, and performing maintenance of the device and / or its peripheral devices based on the deterioration degree information.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. This embodiment is applied to an abnormality notification method and a maintenance method for equipment such as a boiler.
[0009]
(Embodiment 1)
In the first embodiment, a detection step for detecting a state value related to an abnormality factor, an integration step for integrating the influence time when the state detection value is equal to or less than a reference value, and the influence time accumulated by the integration step are used to detect an abnormality. An abnormality notification method including a notification step of notifying deterioration degree information.
[0010]
In the first embodiment, the influence state of the abnormality factor on the device or the like is grasped with time, and the failure of the device or the abnormality of the accident caused by the continuation of the influence state is predicted.
[0011]
The said apparatus contains various other apparatuses, such as a boiler and an electric motor. The abnormality factors include the following when the equipment is a boiler. When the abnormality is regarded as damage due to the scale or corrosion of the boiler body, the abnormality causes include hardness leakage, scale adhesion, and chemical breakage. When abnormality is regarded as a deterioration in the quality of products manufactured or processed using steam-using equipment, it includes fluctuations in steam pressure. When the abnormality is clogged in the can body, the abnormality factor includes filter clogging in the combustion intake supply passage. When the abnormality is assumed to be a deterioration in steam dryness, the abnormality factor includes defective blow operation. Furthermore, when the abnormality is a failure of the controller, the abnormality factor includes overheating of the control board. As described above, the abnormality includes not only an abnormality of the device itself but also an abnormality of a facility or device that uses the output of the device.
[0012]
In the first embodiment, the detection step is first performed. In this detection step, various sensors suitable for detecting the state of the abnormality factor are provided, and the state value is detected by these sensors.
[0013]
Next, the integration step is performed. In this integration step, the influence time on the device or the like when the state detection value is a reference value or less is integrated. The influence time can be rephrased as deterioration influence time or operation time. When the equipment is a boiler, it becomes combustion time. When the boiler performs high combustion and low combustion, for example, the combustion time is converted to high combustion.
[0014]
The notification step is performed based on the integration step. In this notification step, information on the degree of deterioration to abnormality is notified by the integrated value of the integration step. The deterioration degree information means how bad the approach is to an abnormality. The integrated influence time when the state detection value is equal to or less than the reference value is grasped experimentally or empirically, and indicates the degree of deterioration information.
[0015]
The deterioration degree information notification method includes a method of notifying the integration time itself, a method of notifying the integration time by plotting or visualizing, and a method of notifying the deterioration degree in a plurality of stages and informing each of the plurality of stages. The notification means includes a display means for displaying on a display, a printing means for printing on paper and outputting, a means for making a sound notification, and the like.
[0016]
According to the first embodiment, the user and maintenance staff of the device can grasp the situation more accurately based on the information on the degree of deterioration to the abnormality, perform necessary maintenance of the device and / or its peripheral devices, and The necessary maintenance can be reduced.
[0017]
Next, the first embodiment includes the following second to seventh embodiments.
[0018]
(Embodiment 2)
In the second embodiment, a detection step for detecting a state value relating to a chemical run-off, an integration step for integrating the combustion time of the boiler when the state detection value by this detection step is below a reference value, and the integration step An abnormality notification method including a notification step of notifying deterioration degree information on abnormality according to boiler combustion time.
[0019]
In the boiler, chemicals for preventing scale adhesion and chemicals for preventing corrosion of the can are injected into the water supply in order to prevent abnormalities such as damage to the can due to scale adhesion and damage due to corrosion. If combustion is continued in a state where these chemicals have run out, eventually an abnormality such as damage to the can body is caused.
[0020]
The second embodiment solves this problem, and a chemical level sensor is provided in the chemical injection device as means for detecting a state value related to chemical shortage. A detection step of detecting whether the value is equal to or less than the value is performed. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. The obtained accumulated combustion time is information on the degree of deterioration to abnormality, and a notification process for notifying this degree of deterioration information is performed. This notification process is preferably performed as an alarm process that is executed when the accumulated combustion time becomes equal to or longer than a set value, and issues an alarm to the effect that some countermeasure is required due to an abnormality due to the out of medicine.
[0021]
(Embodiment 3)
In the third embodiment, a detection step for detecting a state value related to a blow operation failure, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and combustion of the boiler integrated by this integration step An abnormality notification method including a notification step of notifying deterioration degree information to abnormality over time.
[0022]
In the boiler, in order to prevent an abnormality such as deterioration of steam dryness due to the concentration of can water, the can body is blown to discharge the can water, but this blow operation (operation) is not properly performed. If the combustion is continued at the end, it will eventually lead to an abnormality of damage to the can body.
[0023]
Embodiment 3 solves this problem, and is provided with a blow notification timer (accumulating the combustion time in terms of high fuel) or a concentration sensor as means for detecting a state value related to the blow operation failure. The reference value indicating that the state detection value is not properly blown by combining one or both of these sensors (in the case of a blow notification timer, the accumulated combustion time, in the case of the enrichment sensor) Performs a detection step of detecting whether or not the electrical conductivity is equal to or less. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. And the alerting | reporting process which alert | reports a deterioration degree information by integrated combustion time is performed. This notification step is preferably performed as an alarm step that is executed when the accumulated combustion time becomes equal to or greater than a set value, and issues an alarm that some countermeasure is necessary due to an abnormality caused by inappropriate blow operation.
[0024]
(Embodiment 4)
The fourth embodiment includes a detection step for detecting a state value related to substrate overheating of the controller, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and the boiler integrated by this integration step. An abnormality notification method including an informing step of informing information on the degree of deterioration to an abnormality according to the combustion time.
[0025]
In the boiler, an abnormality of controller failure due to overheating of the circuit board of the boiler controller is caused.
[0026]
The fourth embodiment solves this problem, and is provided with a temperature sensor for detecting the substrate itself or the ambient temperature of the substrate as means for detecting an overheat state value of the substrate. The detection process which detects whether overheating is below a reference value is performed. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. And the alerting | reporting process which alert | reports a deterioration degree information by integrated combustion time is performed. This notification process is preferably performed as an alarm process that is executed when the accumulated combustion time becomes equal to or greater than a set value, and issues an alarm to the effect that some countermeasure is necessary due to an abnormality caused by overheating of the substrate.
[0027]
(Embodiment 5)
Embodiment 5 includes a detection step for detecting a state value related to hardness leakage, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and the combustion time of the boiler integrated by this integration step. And a notification step of notifying the degree of deterioration information to the abnormality.
[0028]
In the boiler, if the hardness leak continues, an abnormality such as breakage of the can body is caused.
[0029]
The fifth embodiment solves this problem, and a hardness leak sensor is provided in the water supply line of the boiler, or a scale adhesion detection sensor is provided in a water pipe constituting the can body, and the state is determined by these sensors. A detection step is performed for detecting whether the detected value is equal to or less than a reference value indicating whether the drug hardness is leaked. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. And the alerting | reporting process which alert | reports a deterioration degree information by integrated combustion time is performed. This notification step is preferably performed as an alarm step that is executed when the accumulated combustion time becomes equal to or greater than a set value, and issues an alarm indicating that some countermeasure is required due to hardness leakage or scale adhesion.
[0030]
(Embodiment 6)
In the sixth embodiment, a detection step for detecting a state value relating to a decrease in supply steam pressure, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and the boiler integrated by this integration step An abnormality notification method including an informing step of informing information on the degree of deterioration to an abnormality according to the combustion time.
[0031]
In the boiler, the generated steam is used in a user's use facility. Fluctuation, especially reduction, in the steam pressure of the boiler is directly related to the efficiency and finish of the manufacturing process and processing process of the equipment used. If the pressure fluctuation continues, the product quality is deteriorated.
[0032]
The sixth embodiment is to solve this problem, and is provided with a steam pressure sensor as means for detecting a state value related to the decrease in the steam pressure, and whether or not the pressure sensor is below a reference value indicating a pressure decrease. A detection step of detecting is performed. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. And the alerting | reporting process which alert | reports a deterioration degree information by integrated combustion time is performed. This notification process is preferably performed as an alarm process that is executed when the accumulated combustion time becomes equal to or greater than a set value, and issues an alarm to the effect that some countermeasure is required due to an abnormality due to a drop in steam pressure.
[0033]
(Embodiment 7)
Embodiment 7 includes a detection step for detecting a state value related to filter clogging, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and combustion of the boiler integrated in this integration step An abnormality notification method including a notification step of notifying deterioration degree information to abnormality over time.
[0034]
In the boiler, when the filter provided in the air supply path is clogged, the combustion state may deteriorate, and the occurrence of soot may lead to an abnormality of combustion stop.
[0035]
The seventh embodiment solves this problem, and is provided with a differential pressure sensor as means for detecting a state value related to the filter clogging, and a state detection value by this differential pressure sensor, that is, an upstream side of the filter. A detection step of detecting whether or not the differential pressure between the pressure and the downstream pressure is equal to or less than a reference value indicating filter clogging is performed. Next, it is determined whether or not combustion is performed, and a combustion time integration step of integrating the combustion time under the condition that the combustion is performed below the reference value is performed. And the alerting | reporting process which alert | reports a deterioration degree information by integrated combustion time is performed. This notification step is preferably performed as an alarm step that is executed when the accumulated combustion time becomes equal to or greater than the set value and issues an alarm that some countermeasure is required due to an abnormality caused by filter clogging.
[0036]
Furthermore, the embodiment of the present invention includes a detection step for detecting a state value related to an abnormality factor, an integration step for integrating an influence time when the state detection value is equal to or less than a reference value, and the influence time integrated by the integration step. And a notification step of notifying the deterioration degree information to abnormality, and is also applied to a maintenance method characterized in that maintenance of devices and / or peripheral devices of the devices is performed based on the deterioration degree information. This embodiment includes the following eighth to thirteenth embodiments. Here, the maintenance includes at least one of maintenance, repair, and inspection.
[0037]
(Embodiment 8)
In the eighth embodiment, a detection step for detecting a state value related to the out of medicine, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and the combustion time of the boiler integrated by this integration step And a notifying process for notifying the deterioration degree information due to the abnormality, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the deterioration degree information.
[0038]
(Embodiment 9)
In the third embodiment, a detection step for detecting a state value related to a blow operation failure, an integration step for integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and combustion of the boiler integrated by this integration step And a notifying process for notifying information on the degree of deterioration to abnormality over time, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the degree of deterioration information.
[0039]
(Embodiment 10)
In the tenth embodiment, a detection step of detecting a state value related to substrate overheating of the controller, an integration step of integrating the combustion time of the boiler when the state detection value is not more than a reference value, and the boiler integrated by this integration step And a notifying step of notifying the deterioration degree information to the abnormality by the combustion time of the above, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the deterioration degree information.
[0040]
(Embodiment 11)
In the eleventh embodiment, a detection step of detecting a state value related to hardness leakage, an integration step of integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and the combustion time of the boiler integrated in this integration step And a notification step of notifying the deterioration degree information to abnormality, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the deterioration degree information.
[0041]
(Embodiment 12)
In the twelfth embodiment, a detection step for detecting a state value relating to a decrease in supply steam pressure, an integration step for integrating boiler combustion time when the state detection value is equal to or less than a reference value, and the boiler integrated by this integration step And a notifying step of notifying the deterioration degree information to the abnormality by the combustion time of the above, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the deterioration degree information.
[0042]
(Embodiment 13)
In the thirteenth embodiment, a detection step of detecting a state value related to filter clogging, an integration step of integrating the combustion time of the boiler when the state detection value is equal to or less than a reference value, and combustion of the boiler integrated by this integration step And a notifying process for notifying information on the degree of deterioration to abnormality over time, and a maintenance method for performing maintenance of equipment and / or peripheral equipment based on the degree of deterioration information.
[0043]
According to the eighth embodiment to the thirteenth embodiment, a customer or maintenance staff who knows the information about the degree of deterioration to an abnormality can use the device and / or a peripheral device of the device, such as a water softener or a drug dispenser. Carry out necessary maintenance.
[0044]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram of an embodiment of a boiler system embodying the present invention, and FIG. 2 is a flowchart illustrating an abnormality notification method according to the embodiment.
[0045]
As shown in FIG. 1, the boiler system according to the embodiment includes a steam boiler (hereinafter simply referred to as a boiler) 1, a fuel supply path 3 having a first valve 2 for fuel control, and a combustion system having a blower 4. A water supply path 8 having an air supply path 5, a water softener 6 and a pump 7, a second valve 9 for blow control, and a drain path for blowing (draining) can water of a can body (not shown). 10 and a chemical injection channel 12 having a chemical injection device 11 for injecting a chemical (liquid) for preventing corrosion of the can into the water supply channel 8.
[0046]
The combustion air supply passage 5 is provided with a filter (not shown), and a first sensor 13 that detects clogging of the filter detects hardness leakage downstream of the water softener 6 in the water supply passage 8. The second sensor 14 includes a third sensor 15 that detects a chemical level in a chemical tank (not shown) in the drug injector 11, and a fourth sensor 16 that detects the concentration of can water in the can body. Each is provided.
[0047]
The outputs of the first sensor 13 to the fourth sensor 16 are input to the controller 17, and according to the control procedure stored in the controller 17, the first valve 2, the second valve 9, the blower 4, the pump 7, The indicator 18 provided in the boiler 1 is controlled. The controller 17 has a fifth sensor 19 that detects the temperature of a control board (not shown), and the output of this sensor is also input to the controller 17. The first sensor 13 to the fifth sensor 19 have a known configuration.
[0048]
The operation of the embodiment having the above configuration will be described with reference to the flowchart of FIG. Now, it is assumed that the boiler 1 is in operation. In FIG. 2, it is determined in step S1 (hereinafter, step SN is simply referred to as SN) whether or not the first sensor 13 is equal to or less than a reference value indicating filter clogging. If NO is determined here, the process returns to S1.
[0049]
If YES is determined in S <b> 1, the process proceeds to S <b> 5 to notify that the filter needs to be inspected. At the same time, the process proceeds to S2 to determine whether combustion is being performed. If NO is determined in S2, the process returns to S1, and if YES is determined, the process proceeds to S3.
[0050]
In S3, the combustion time of the boiler under the condition below the reference value in S2 is integrated. This integration is performed by energizing the timer using, for example, an analog timer. This integration reset is performed manually when the deteriorated state due to the abnormality factor is restored to the original state.
[0051]
If the set threshold value, for example, the high combustion integration time exceeds 10 hours in S4, the process proceeds to S5. In S5, the indicator 18 displays an alarm indicating the degree of deterioration of the boiler due to filter clogging, that is, the degree of deterioration, for example, “Please be careful about clogging of the can”.
[0052]
Such an alarm makes it possible to grasp the situation more accurately, perform necessary maintenance, and reduce unnecessary maintenance.
[0053]
Although the first sensor 13 has been described above, the other sensors 14, 15 and 19 are also notified of information on the degree of deterioration to abnormality based on the state value detection by each sensor by the same processing as in FIG. . In each process, the reference value of S1 and the threshold value of S4 in FIG. 2 are set for each sensor.
[0054]
The present invention is not limited to the above embodiments. In the said Example, although it has comprised so that the process of FIG. 2 may be performed about all of said 1st sensor 13-5th sensor 19, abnormality like FIG. 2 about any one sensor or several sensors. It can be configured to perform processing for foreseeing. Furthermore, another sensor can be provided to perform the foreseeing process.
[0055]
【The invention's effect】
According to the present invention, it is possible to easily know the degree of deterioration to an abnormality, enable a more accurate situation grasp, perform necessary maintenance, and reduce unnecessary maintenance.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a boiler system according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a control procedure of the embodiment.
[Explanation of symbols]
1 Boiler 13 First Sensor 14 Second Sensor 15 Third Sensor 16 Fourth Sensor 19 Fifth Sensor 17 Controller

Claims (2)

A detection step for detecting a state value related to the abnormality factor, an integration step for integrating the influence time when the state detection value is equal to or less than the reference value, and information on the degree of deterioration to the abnormality are notified by the influence time integrated by the integration step. A method for notifying an abnormality, comprising a notification step. A detection step for detecting a state value related to the abnormality factor, an integration step for integrating the influence time when the state detection value is equal to or less than the reference value, and information on the degree of deterioration to the abnormality are notified by the influence time integrated by the integration step. A maintenance method, comprising: a notification step, and performing maintenance of the device and / or its peripheral devices based on the deterioration degree information.

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