JP2002297228A - Maintenance management method for heat supply facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the maintenance management method of a heat supply facility capable of improving the quality of maintenance related with water. SOLUTION: The controller of a management base point or a management center is allowed to execute the following processing, that is, to execute processing to receive water quality data transmitted from a heat supply facility under a contract for maintenance management (S1 in Figure 2), and to execute processing to judge whether or not the water quality is changed based on the received water quality data (S15), and to execute processing to remotely operate the heat supply facility through a communication line, and to carry out treatment corresponding to the change of the water quality (S17) when it is judged that the water quality is changed from the received water quality data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to the maintenance of equipment performance,
The present invention relates to a maintenance management method for a heat supply facility that has a maintenance management contract for performing function maintenance and diagnosis for abnormal recovery and preventive maintenance.

[0002]

2. Description of the Related Art The quality of raw water, water supply, and boiler water supplied to a boiler in a heat supply facility is controlled about once a month by going to a heat supply facility, collecting a sample water, analyzing the sample water, The contents are such as to adjust the injection amount of chemicals for water quality adjustment and the blow amount of the boiler. Further, the management and ordering of the remaining amount of the chemicals and the regenerated salt of the water softener are performed manually.

[0003]

However, in the above-mentioned prior art, the time from the sampling of the sample water to the handling (adjustment) is long and lacks real-time properties. In addition, since the sample water is instantaneous data at the time of water sampling, it is very complicated to adjust the injection amount and the blow amount of the chemical according to the water quality fluctuation and the operation state of the boiler. On the other hand, since the remaining amount management and ordering of chemicals and regenerated salt are performed manually, there is a risk that improper water treatment may be performed if the order is forgotten.

[0004] The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a maintenance management method for heat supply equipment capable of improving the quality of water maintenance.

[0005]

According to a first aspect of the present invention, there is provided a heat supply facility maintenance management method for solving the above-mentioned problems, which includes maintaining the performance of equipment in a heat supply facility, maintaining functions, and recovering abnormalities. A maintenance management contract for performing diagnosis and diagnosis for preventive maintenance is concluded, communication between the heat supply facility and a control device of a management base or a management center is enabled via a communication line, and the heat supply is performed using the communication line. A maintenance management method for a heat supply facility that realizes the contents of the maintenance management contract based on information transmitted from the facility, wherein the control device includes:
(1) receiving water quality data relating to the quality of various types of water supplied to the device, which is measured using a water quality measurement sensor provided in the heat supply facility; and (2) based on the received water quality data. Judging the presence or absence of a change in water quality; and (3) when it is determined that there is a change in water quality based on the received water quality data, the heat supply equipment is remotely operated via the communication line to respond to the change in water quality. Take action,
Or a step of issuing a notification relating to a change in water quality.

According to a second aspect of the present invention, there is provided a heat supply equipment maintenance management method for solving the above-mentioned problems, in which the performance of the equipment in the heat supply equipment is maintained, the function is maintained, and diagnosis for abnormal recovery and preventive maintenance is performed. , Do maintenance contracts,
The communication between the heat supply equipment and the control device of the management base or the management center is enabled via a communication line, and the content of the maintenance management contract is based on information transmitted from the heat supply equipment using the communication line. A method for maintaining and managing a heat supply facility which realizes the following: (1) the water quality of various kinds of water supplied to the equipment measured by using a water quality measurement sensor provided in the heat supply facility; Receiving the water quality data; (2) determining whether there is a change in water quality based on the received water quality data; and (3) determining that there is a change in water quality based on the received water quality data. Remotely operating the heat supply facility via a communication line to perform a treatment in accordance with a change in water quality, or reporting a change in water quality; and (4) a consumables detection device provided in the heat supply facility. Receiving consumables data measured with, and determining the necessity of the supply of the consumable on the basis of the consumable data received (5),
(6) when the supply of the consumables is required, remotely controlling the heat supply facility via the communication line to automatically supply the consumables, or reporting the supply of the consumables; , Is executed.

According to the first aspect of the present invention,
The control device of the management base or the management center executes the following processing. That is, first, a process of receiving the water quality data transmitted from the heat supply facility is executed. Next, a process of determining whether there is a change in water quality based on the received water quality data is performed. Subsequently, when it is determined that there is a change in the water quality based on the received water quality data, a process according to the change in the water quality by remotely operating the heat supply equipment via the communication line, or a process of reporting the change in the water quality. Execute The water quality data relates to the quality of various types of water supplied to the equipment of the heat supply facility, and is measured and processed using a water quality measurement sensor provided in the heat supply facility. By performing the processing including the above, it becomes possible to obtain information on water in real time. This makes it possible to maintain and manage the heat supply equipment according to water quality fluctuations and the operating conditions of the equipment. Therefore, the quality of maintenance related to water can be improved. In this specification, examples of the heat supply facility include a boiler, a device for supplying cold heat (for example, a chiller / heater), and a device such as a water treatment device attached to the boiler. The boiler includes various boilers such as a steam boiler, a hot water boiler, and a heat medium boiler. The water treatment device includes various devices such as a water softening device, a degassing device, a filtration device, a pure water device, a chemical injection device (a water treatment chemical injection device), and the like.

[0008] According to the present invention described in claim 2,
The control device of the management base or the management center executes the following processing. That is, first, a process of receiving the water quality data transmitted from the heat supply facility is executed. Next, a process of determining whether there is a change in water quality based on the received water quality data is performed. Subsequently, when it is determined that there is a change in the water quality based on the received water quality data, a process according to the change in the water quality by remotely operating the heat supply equipment via the communication line, or a process of reporting the change in the water quality. Execute The water quality data relates to the quality of various types of water supplied to the equipment of the heat supply facility, and is measured and processed using a water quality measurement sensor provided in the heat supply facility. On the other hand, in addition to the above, first, a process of receiving consumables data transmitted from the heat supply facility is executed. Next, a process of determining whether or not supply of consumables is necessary based on the received consumables data is executed. Subsequently, when the supply of the consumables is necessary, a process of remotely controlling the heat supply equipment via the communication line to perform automatic supply of the consumables or perform a process of notifying the supply of the consumables is performed. The consumables data relates to, for example, the remaining amount of consumables, and is data measured and processed by using a consumables detecting unit provided in the heat supply facility. In addition, the consumables data may be a consumption amount or a supply timing of the consumables, may be directly measured by a sensor, or may be obtained by calculation based on an operation state of the heat supply equipment. By performing the processing including the above, it becomes possible to obtain information on water in real time. This makes it possible to maintain and manage the heat supply equipment according to water quality fluctuations and the operating conditions of the equipment. Further, it becomes possible to manage the remaining amount, supply and order of the consumables. Therefore,
The quality of maintenance related to water can be improved.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of a system in which the maintenance management method for heat supply equipment of the present invention is adopted. FIG. 2 is a flowchart showing the basic operation of the control device, and FIG. 3 is a flowchart relating to the water information processing of FIG.

In FIG. 1, a system adopting the method for maintaining and managing heat supply equipment according to the present invention includes a plurality of (only one is illustrated, may be a single) facility sites 1 and the plurality of facility sites 1. Is constructed using a communication line 3 between a management base 2 in the area where the management base 2 is located, other facility sites and management bases (not shown), and a management center (not shown) that controls these management bases 2. Further, a system in which the maintenance management method of the heat supply equipment in the present invention is adopted,
It is constructed after concluding a maintenance management contract for the heat supply equipment 7 described later.

At the facility site 1, a heat supply facility 7 having a boiler 4, a water treatment device 5, and an equipment controller 6 is installed. Further, the heat supply equipment 7 is provided with first and second water quality measurement sensors 8a and 8b and a remaining amount detection device 9 as consumables detection means. On the other hand, a control device 10, a database 11, and a modem 12 connected to the communication line 3 are installed in the management base 2 and the management center (not shown), respectively.

Here, the maintenance management contract will be briefly described. The maintenance management contract includes contents for maintaining the performance of the equipment in the heat supply facility 7, maintaining the functions, and performing diagnosis for abnormal recovery and preventive maintenance. Has become. That is,
Maintain the performance of the equipment in a good state (high efficiency state), maintain the original function of the equipment so that the equipment does not stop due to the occurrence of an abnormality, and even if an abnormality occurs in the equipment The content is such that it can be restored to normal immediately. Further, in order to realize performance maintenance and function maintenance, for example, periodic inspection is performed every four months as a diagnosis for preventive maintenance.

Hereinafter, each of the above-described components will be described in detail, and then, a maintenance management method for the heat supply equipment according to the present invention will be described based on the operation of the above-described system.

The boiler 4 is provided with a burner 13, a water supply line 14, a steam line 15, a water level detecting means 16, and a steam pressure detecting means 17. A fuel supply line 18 is connected to the burner 13. The burner 13 has a blower 20 through a wind box 19.
Is provided. A fuel valve 21 is provided in the fuel supply line 18, and a wind box 19 is provided with a fuel valve 21.
A flame detecting means 22 for detecting the state of the flame of the burner 13, that is, the combustion state is provided.

On the other hand, the water supply line 14 is
3 and is connected to the lower part of the boiler 4. On the other hand, the steam line 15 is connected to the upper part of the boiler 4. The water level detecting means 16 is configured to detect the water level in the can, and the vapor pressure detecting means 17 is configured to detect the vapor pressure in the can.

The water treatment apparatus 5 adjusts the quality of raw water for a suitable operation of the boiler 4 and supplies the adjusted raw water (treated water) to the boiler 4. It is composed of a pneumatic device, a chemical injection device, and the like. The water treatment device 5 is provided on the water supply line 14 on the upstream side of the water supply pump 23. The water treatment device 5 includes:
A raw water supply line 24 and a treated water supply line 25 connected to the water supply line 14 are provided.

The first water quality measurement sensor 8a is provided on the raw water supply line 24, and the second water quality measurement sensor 8b is provided on the treated water supply line 25. The first water quality measurement sensor 8a automatically measures the quality of the raw water supplied to the water treatment device 5 based on the control of the device controller 6, and measures the hardness, the DO value, the silica concentration, and the like of the raw water. It is configured to be able to. The second water quality measurement sensor 8b automatically measures the quality of the treated water based on the control of the device controller 6, and can measure the hardness, the DO value, the silica concentration, and the like of the treated water. It is configured as follows. That is, the second water quality measurement sensor 8b monitors whether the water treatment device 5 is functioning normally. Both water quality measurement sensors 8a and 8b are constituted by a plurality of detectors such as a hardness detector. It is assumed that the measured value is processed by the device controller 6 into water quality data.

One or a plurality of the remaining amount detecting devices 9 are attached to the water treatment device 5, and the remaining amount of water treatment chemicals (chemicals for adjusting water quality) as consumables and soft water as consumables are also used. The remaining amount of the regenerated salt in the apparatus is automatically measured based on the control of the device controller 6. The remaining amount detecting device 9 includes a liquid level sensor and a weight sensor. It is assumed that the measured value is processed into consumable data in the device controller 6.

The equipment controller 6 includes the boiler 4,
A device (having a so-called microcomputer function) for automatically controlling the water treatment device 5, the water quality measurement sensors 8a and 8b, and the remaining amount detection device 9, and includes a control unit 26 and a display unit 27.
, An interface 28 and a modem 29. The equipment controller 6 periodically transmits data relating to the operation information of the heat supply equipment 7 (information on water, that is, including water quality data and consumables data) to the management base 2 side, and when an abnormality occurs in the boiler 4 The occurrence of the abnormality is automatically notified to the management base 2 each time the abnormality occurs (the abnormality occurrence data is transmitted to the management base 2 side, and detailed abnormality occurrence data, etc., if necessary. Also send).

The control section 26 has an R (not shown) therein.
It is configured to include an OM, a CPU, an EEPROM, a RAM, and the like. The ROM is a read-only memory,
A program, fixed data, and the like are stored. The CPU is a central processing unit and operates according to a control program stored in the ROM in advance. The EEPROM is an electrically erasable / rewritable read-only memory, and stores various set value information and the like. The RAM is a readable and writable memory, and has a data area for storing various data used in the course of the processing of the CPU and a work area used for the processing.

It is assumed that the abnormality occurrence data includes abnormality data and prediction data. The abnormality data indicates that an abnormality has actually occurred and the heat supply equipment 7 has stopped. For example, it is assumed that the occurrence of misfire and the occurrence of a low water level correspond to this. On the other hand, the prediction data is
It is not necessary to stop the heat supply facility 7 immediately, but it is to notify that there is a high possibility that the heat supply facility 7 will be stopped due to an abnormality in the near future. For example,
It is assumed that a decrease in the capacity of the water supply pump corresponds to this (a low water level is likely to occur when the capacity of the water supply pump is reduced).

The display unit 27 is a so-called monitor, and is connected to the control unit 26. Also, recovery instruction information and the like from the control device 10 for instructing the operation state of the heat supply facility 7 and a recovery procedure in the event of an abnormality are displayed.

The interface 28 is connected to the control unit 26. In addition, the interface 28 has a plurality of lines 30 through which the water level detecting means 16, the vapor pressure detecting means 17, the blower 20, the fuel valve 21, the flame detecting means 22,
Water supply pump 23, water treatment device 5, both water quality measurement sensors 8
a, 8b, and the remaining amount detection device 9 are connected. A modem 29 is also connected to the interface 28. The operating state of the boiler 4 and the like is sequentially taken into the control unit 26 by the interface 28. The modem 29 is connected to the communication line 3.

The control device 10 is a device for realizing the contents of the maintenance management contract based on various information (various data) transmitted from the heat supply equipment 7, and controls the heat supply equipment 7 via the communication line 3. It is possible to automatically perform remote control (remote control by a staff member is also possible). Also,
The control device 10 includes a control device main body 31 and a monitor 32 (it can be configured using a personal portable computer).

The control device main body 31 includes a ROM, CPU, EEPROM, RAM, and the like (not shown) therein. The ROM is a read-only memory, and stores programs, fixed data, and the like. The CPU is a central processing unit, and the ROM is
The operation is performed according to a control program stored in advance in the storage device. The EEPROM is an electrically erasable / rewritable read-only memory, and stores various set value information and the like. The RAM is a readable and writable memory, and has a data area for storing various data used in the course of the processing of the CPU and a work area used for the processing.

The monitor 32 is used when the person in charge of the management base 2 (or the management center) checks the operation status of the boiler 4 or the like, checks requested information, or analyzes the control device body 31. It is mainly used when confirming reports based on the results.

The database 11 stores data on the operation status of the boiler 4 and the like and various information on the heat supply equipment 7. The information includes set values, management values, component information, handling, Q & A, troubleshooting, and the like. The various types of information can be confirmed through an interface (or a communication device) (not shown) provided in the control device 10 and the device controller 6 (for example, by using a mobile terminal carried by a maintenance person or the like, wireless communication or the like) Can be confirmed by appropriate means).

An outline of the operation (process) performed by the CPU according to the control program stored in the ROM (not shown) of the control device 10 in the above configuration will be described with reference to the flowcharts of FIGS. In addition, FIG. 1 will be referred to as needed. It is assumed that the process executed by the control device 10 includes the features of the maintenance management method for the heat supply facility in the present invention. The control device 10 is executed by either the management base 2 or a management center (not shown).

When the control device 10 is activated and the control program is started, the CPU executes initialization (not shown), sets flags of various flag areas provided in the work area of the RAM, and sets various buffer areas. It clears and resets the count value of various counter areas to zero. Then, the processing from step S1 described below is sequentially performed.

In step S1, data relating to operation information transmitted periodically and / or as needed from the equipment controller 6 of the heat supply equipment 7 is received, and the following processing is performed.
That is, the process proceeds to step S3.

When the process proceeds to step S3, in step S3, it is determined whether or not the data relating to the received operation information is information relating to water of the heat supply equipment 7, that is, water quality data or consumables data. If the data is not water quality data or consumables data (N in step S3), the process proceeds to step S5. On the other hand, if the data is water quality data or consumables data (Y in step S3),
The process proceeds to step S7 (water information processing subroutine).

If the data relating to the received driving information is not water quality data or consumables data, and the process proceeds to step S5, the data relating to the received driving information is transferred to the management base 2 and / or the management center (step S5). (Omitted) in the database 11, and the process proceeds to the next process, that is, the process of step S9.

On the other hand, when the data relating to the received operation information is water quality data or consumables data, and the processing of step S7 (subroutine of processing of water information) is executed, the processing returns to the main routine and shifts to the processing of step S9. I do.

When the process proceeds to step S9, it is determined in step S9 whether the system has been stopped or terminated. If the system is not stopped or terminated (N in step S9), the process returns to step S1 to execute the process. On the other hand, when the system stops and ends (Y in step S9), a series of processing ends.

When the processing in step S7 (subroutine of water information processing) is executed, in step S11, the received water quality data and the water quality data of the consumables data are temporarily stored or accumulated in the database 11. ,
The process moves to the next process, that is, the process of step S13.

When the process proceeds to step S13, in step S13, the contents of the water quality data of the received water quality data and consumables data are confirmed, and the process proceeds to the next process, that is, the process of step S15.

When the process proceeds to step S15, in step S15, the received water quality data is compared with a reference value or the previously received water quality data to determine whether there is a change in water quality based on the content confirmation in step S13. to decide. When it is determined that there is a change in water quality (Y in step S15), the process proceeds to step S17. On the other hand, if it is determined that there is no change in the water quality (N in step S15), the process proceeds to step S19.

When the process shifts to step S17, in step S17, the heat supply equipment 7 is connected via the communication line 3.
(Specifically, the device controller 6) is remotely operated to perform a treatment according to the change in water quality. That is, a remote operation is performed to change the injection amount of the chemical for water quality adjustment, regenerate the water softener, or change the blow amount of the boiler 4 or a combination thereof. Then, the process proceeds to the next process, that is, the process of step S19.

When the process proceeds to step S19, in step S19, the consumables data of the received water quality data and consumables data is temporarily stored or stored in the database 11, and the next process, that is, the process in step S21 Move to.

When the process proceeds to step S21, in step S21, the contents of the consumables data of the received water quality data and consumables data are confirmed, and the process proceeds to the next process, that is, the process of step S23.

When the process proceeds to step S23, in step S23, the received consumable data is compared with a reference value to determine whether or not supply of consumables is necessary based on the content confirmation in step S21. When it is determined that the supply of the consumables is necessary (Y in step S23),
The process moves to step S25. On the other hand, when it is determined that the supply of the consumables is not necessary (step S2).
In 3), the process returns to the main routine and proceeds to the next process.

When the process proceeds to step S25, in step S25, the heat supply equipment 7 is connected via the communication line 3.
(Specifically, the equipment controller 6) is remotely operated to automatically supply the chemical for water quality adjustment and / or the automatic supply of the regenerated salt of the water softener, and return to the main routine.

The above steps S17 and S17
Instead of the remote control of 25, a notification to the monitor 32 and the heat supply facility 7 may be performed (consumables may be ordered together). Also,
The processes of steps S11 to S17 and the processes of steps S19 to S25 may be formed as separate subroutines.

As described above, by causing the control device 10 to execute the processing including steps S11 to S17, it is possible to obtain the information on water in real time. Thereby, the heat supply equipment 7 can be maintained and managed according to the water quality fluctuation and the operation state of the equipment. In addition, by executing the processes from step S19 to step S25, the remaining amount management, supply, and ordering of the consumables can be reliably performed. Therefore, by adopting the heat supply equipment maintenance management method of the present invention, the quality of maintenance related to water can be improved. In addition, it goes without saying that the present invention can be variously modified and implemented without departing from the gist of the present invention.

[0045]

As described above, according to the first aspect of the present invention, by causing the control device to execute a process including the steps (1) to (3), information on water is obtained. Can be obtained in real time. This makes it possible to maintain and manage the heat supply equipment in accordance with water quality fluctuations and the operating conditions of the equipment. Therefore, by adopting the heat supply equipment maintenance management method of the present invention, the quality of maintenance related to water can be improved.

According to the second aspect of the present invention,
By causing the control device to execute a process including the steps (1) to (6), information on water can be obtained in real time. This makes it possible to maintain and manage the heat supply equipment in accordance with water quality fluctuations and the operating conditions of the equipment. Also, the remaining amount management, supply, and ordering of the consumables can be reliably performed. Therefore, by adopting the heat supply equipment maintenance management method of the present invention, the quality of maintenance related to water can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a system in which a maintenance management method for heat supply equipment according to the present invention is adopted.

FIG. 2 is a flowchart showing a basic operation of the control device.

FIG. 3 is a flowchart relating to processing of water information in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facility site 2 Management base 3 Communication line 4 Boiler 5 Water treatment device 6 Equipment controller 7 Heat supply equipment 8a First water quality measurement sensor 8b Second water quality measurement sensor 9 Remaining amount detecting device (consumables detecting means) 10 Control device 11 Database 12 Modem 14 Water supply line 23 Water supply pump 24 Raw water supply line 25 Treated water supply line 26 Control unit 27 Display unit 28 Interface 29 Modem 30 Line 31 Controller main unit

Continuation of the front page F term (reference) 5H223 AA11 BB01 CC01 DD07 EE11

Claims (2)

[Claims] 1. A maintenance management contract for performing performance maintenance, function maintenance, and diagnosis for abnormal recovery and preventive maintenance of equipment in a heat supply facility is concluded, and the heat supply facility and a control device of a management base or a management center are concluded. Between the communication line, and the maintenance management method of the heat supply equipment that realizes the contents of the maintenance management contract based on the information transmitted from the heat supply equipment using the communication line, (1) receiving water quality data relating to the quality of various types of water supplied to the equipment, which is measured using a water quality measurement sensor provided in the heat supply facility; and (2) the reception. Determining the presence or absence of a change in water quality based on the obtained water quality data; and (3) remotely determining the heat supply facility via the communication line when determining that there is a change in water quality based on the received water quality data. Create Shi to treatment in response to changes in water quality, or maintenance method for the heat supply facility, characterized in that to execute the steps, the process comprising to make notification of the change in the water quality. 2. A maintenance management contract for performing performance maintenance, function maintenance, and diagnosis for abnormal recovery and preventive maintenance of the equipment in the heat supply equipment is concluded, and the heat supply equipment and a control device of a management base or management center are concluded. Between the communication line, and the maintenance management method of the heat supply equipment that realizes the contents of the maintenance management contract based on the information transmitted from the heat supply equipment using the communication line, (1) receiving water quality data relating to the quality of various types of water supplied to the equipment, which is measured using a water quality measurement sensor provided in the heat supply facility; and (2) the reception. Determining the presence or absence of a change in water quality based on the obtained water quality data; and (3) remotely determining the heat supply facility via the communication line when determining that there is a change in water quality based on the received water quality data. Making a treatment in accordance with the change in water quality or reporting a change in water quality; and (4) receiving consumables data measured using consumables detection means provided in the heat supply facility. (5) determining whether supply of the consumable is necessary based on the received consumable data; and (6) supplying the heat via the communication line when the supply of the consumable is necessary. Performing a process including: remotely operating equipment to automatically supply the consumables; or reporting a supply of the consumables.