JP2016035375A - Steam-using facility management method, and steam-using facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manage a steam-using facility by reliably predicting changes in generated steam amount, steam consumption amount and generated condensate amount.SOLUTION: In a correlation between an environment state value e and a generated condensate amount in a steam-using facility 1 in which the generated condensate amount changes in conjunction with changes in the environment state value e, an environment state value when the generated condensate amount reaches a set warning amount is set as a warning state value. An alarm is issued when the actual environment state value e measured by measuring means 6 has moved in the direction of increase of the generated condensate amount and reached the set warning state value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steam utilization facility management method and a steam utilization facility that implements the management method.

  In order to operate steam utilization equipment well, it is necessary to maintain an appropriate balance between the amount of steam generated and consumed in the steam utilization equipment, and to properly discharge the condensate generated by the consumption of steam to the outside of the system. There is. For example, when the amount of steam generated in the steam generating device decreases or the amount of steam consumed in the steam using device increases, the operation of the steam utilization facility is hindered due to insufficient steam. In addition, if the amount of condensate generation increases, the amount of condensate generation exceeds the condensate discharge capacity of the steam trap and condensate accumulates in the steam utilization equipment, resulting in hindering heat transfer, corrosion of pipes and water. There is a risk of generating a hammer. The balance between the amount of steam generated and consumed in steam-using facilities, and the amount of condensate generated due to steam consumption, etc., depends on the operating status of each device (whether the device is normal, whether it is operating, The amount of steam generated and the amount of steam used, etc.) changes, and in the management of steam-using facilities, the balance between the amount of steam generated and consumed in steam-using facilities and the amount of condensate generated It is necessary to cope with.

  And, for example, Patent Document 1 grasps information such as the amount of steam generated in each steam generating device, the amount of steam consumed in each steam-using device, the method of discharging condensate, and a facility improvement method based on these information. A search method has been proposed. By adjusting the amount of steam generated and consumed by each equipment based on the facility improvement method that was searched for and improving the condensate discharge method, the balance between the amount of steam generated and consumed and the amount of condensate generated Can respond to changes in

JP 2009-52412 A

  However, due to some factors, changes in steam production, steam consumption, and condensate generation may occur unexpectedly.In this case, all the devices that make up the steam utilization facility are all normal. Even if the amount of steam generated and consumed in each device is adjusted according to the method of the above-mentioned Patent Document 1 and only the condensate discharge method is improved, the amount of steam generated, the amount of steam consumed, and the condensate In some cases, it was not possible to respond sufficiently to changes in the amount of generation. In particular, as described above, when there is a decrease in steam production, an increase in steam consumption, and an increase in condensate generation, a significant obstacle occurs in the operation of the steam utilization equipment. It is necessary to foresee the decrease, increase in steam consumption, and increase in condensate generation.

  In view of this situation, the main problem of the present invention is to appropriately predict steam utilization equipment by reliably predicting changes in steam generation amount, steam consumption amount, and condensate generation amount.

The first characteristic configuration of the present invention relates to a management method of steam utilization equipment,
In the correlation between the environmental state value and the amount of condensate generated in a steam-using facility where the amount of condensate generated changes as the environmental state value changes, the environmental state value when the condensate generated amount reaches the set warning amount Set as value,
The point is that an alarm is issued when the actual environmental state value measured by the measuring means changes in the increasing direction of the condensate generation amount and reaches the set warning state value.

  The inventor has found from knowledge that changes in the amount of steam generated / consumed and the amount of condensate generated due to changes in environmental state values such as weather, ambient temperature, and humidity. In other words, in the operation of the steam utilization equipment, it is accompanied by heat radiation from each part such as steam generating equipment, steam using equipment, piping, etc., but the heat radiation state of each part is the weather and temperature (or the ambient temperature of the equipment), It will change according to humidity etc. (For example, if the piping gets wet due to the influence of rain or the temperature is low, the amount of heat released from the piping increases). And if the heat dissipation state changes due to the change in the environmental state value, the operating efficiency of the steam generating equipment and steam using equipment will change, the steam generation amount and steam consumption will change there, and from the piping The amount of heat generated and the amount of steam consumed by the steam-using device will change, and the amount of condensate generated will change.

  On the other hand, according to the above configuration, the environmental state value when the condensate generation amount becomes the set warning amount is set as the warning state value using the correlation between the environmental state value and the condensate generation amount, and the measurement is performed. Since the actual environmental state value is measured by means and an alarm is issued when the actual environmental state value reaches the warning state value, an increase in the amount of condensate can be reliably predicted.

  And since the amount of condensate generation can be predicted, the increase in the amount of condensate can be dealt with promptly, accompanying the increase in the amount of condensate generation, such as heat transfer, pipe corrosion, and water hammer. It can deal with various problems quickly.

The second feature configuration of the present invention relates to a steam utilization facility that implements the method of managing the steam utilization facility according to the first feature configuration.
There is an alarm means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the increasing direction of the condensate generation amount and reaches the set warning state value.

  That is, according to the above configuration, the steam utilization facility management method of the first feature configuration can be suitably implemented, and thereby the above-described operational effects obtained by the steam utilization facility management method of the first feature configuration. Can be effectively obtained.

The third characteristic configuration of the present invention relates to a management method of steam utilization equipment,
In the correlation between the environmental state value and the steam generation amount in the steam utilization facility where the steam generation amount changes with the environmental state value change, the environmental state value when the steam generation amount becomes the set warning amount is set as the warning state value And
The point is that an alarm is issued when the actual environmental state value measured by the measuring means changes in the decreasing direction of the steam generation amount and reaches the set warning state value.

  That is, according to the above configuration, based on the above-described knowledge that the steam generation amount changes due to a change in the environmental state value, the steam generation amount becomes the set warning amount using the correlation between the environmental state value and the steam generation amount. When the actual environmental state value reaches the warning state value, the alarm is issued when the actual environmental state value reaches the warning state value. Can be reliably predicted.

  Since a decrease in the amount of steam generated can be predicted, it is possible to quickly cope with the decrease in the amount of steam generated, and it is possible to quickly cope with the trouble in the operation of the steam utilization facility due to the shortage of steam.

The fourth feature configuration of the present invention relates to a steam utilization facility that implements the steam utilization facility management method of the third feature configuration,
There is an alarm means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the decreasing direction of the steam generation amount and reaches the set warning state value.

  In other words, according to the above configuration, the steam utilization facility management method of the third feature configuration can be suitably implemented, and thereby the above-described effects obtained by the steam utilization facility management method of the third feature configuration can be achieved. Can be effectively obtained.

The fifth characteristic configuration of the present invention relates to a management method of steam utilization equipment,
In the correlation between the environmental state value and the steam consumption in a steam-using facility where the steam consumption changes as the environmental state value changes, the environmental state value when the steam consumption reaches the set warning amount is set as the warning state value And
An alarm is issued when the actual environmental state value measured by the measuring means changes in the direction of increasing steam consumption and reaches the set warning state value.

  That is, according to the above configuration, based on the above-described knowledge that the steam consumption changes due to a change in the environmental state value, the steam consumption becomes the set warning amount by utilizing the correlation between the environmental state value and the steam consumption. When the actual environmental state value is set as the warning state value, the actual environmental state value is measured by the measuring means, and an alarm is issued when the actual environmental state value reaches the warning state value. Increase can be reliably predicted.

  Since an increase in steam consumption can be predicted, it is possible to quickly cope with an increase in steam consumption, and it is possible to quickly cope with an obstacle to the operation of steam utilization equipment due to lack of steam.

The sixth feature configuration of the present invention relates to a steam utilization facility that implements the steam utilization facility management method of the fifth feature configuration,
There is an alarm means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the direction of increasing steam consumption and reaches the set warning state value.

  That is, according to the above configuration, the steam utilization facility management method of the fifth feature configuration can be suitably implemented, and thereby the above-described operational effects obtained by the steam utilization facility management method of the fifth feature configuration. Can be effectively obtained.

The seventh feature configuration of the present invention is a configuration suitable for implementing the second, fourth, or sixth feature configuration,
A detector that detects the operating state value of the monitored device;
Determination means for determining whether the monitored device is out of order based on the detected operating state value;
The determination unit is configured to correct a failure determination criterion of the monitoring target device based on the environmental state value measured by the measurement unit.

  In other words, when the environmental state value changes to change the amount of steam generated / consumed and the amount of condensate generated, some influence also occurs on the operating state value of each device constituting the steam utilization facility. For example, when the environmental state value changes and the steam consumption increases or the condensate generation amount increases, the load on the steam-consuming equipment that consumes the steam increases, and the operation state value (for example, temperature, vibration, It is conceivable that changes occur in the number of revolutions and power consumption in the motor and turbine. In this way, when the operating state value of the monitored device changes due to a change in the environmental state value, the operating state value after the change does not satisfy the determination criterion in the determining means even though the monitored device does not actually have a failure. There is a possibility that the device to be monitored is determined to be broken by the determination means.

  On the other hand, according to the above configuration, since the determination criterion for the failure of the monitored device is corrected according to the measured environmental state value, erroneous determination of the determination unit based on a change in the environmental state value is effectively avoided. be able to.

Schematic plan view of steam utilization equipment and its management system Block diagram showing the configuration of the central management unit

  FIG. 1 shows a management system for implementing a steam utilization facility and a steam utilization facility management method according to the present invention. In FIG. 1, a steam utilization facility 1 to which the present management system is applied includes a steam generating device 2 such as a boiler, a steam using device 3 such as a turbine and a heat exchanger, a steam connected to the steam generating device 2 and the steam using device 3. It comprises a pipe 4 and a steam trap 5 mounted on the steam pipe 4. In this steam utilization facility 1, steam is generated by the steam generating device 2, steam supplied via the steam pipe 4 is used in the steam using device 3, and condensate generated in the steam using device 3 and the steam pipe 4 is generated. It is recovered by the steam trap 5.

  This management system includes a measuring means 6 for measuring an environmental state value e, a steam generating device 2, a steam using device 3, and a detector 7 for detecting an operating state value o of the steam trap 5 as monitoring target devices, an environmental state value The central management apparatus 8 (equivalent to an alarm means and a determination means) which performs various determinations and alarms based on e and the operation state value o is comprised.

  The measuring means 6 measures weather information (such as sunny or rainy) and temperature as the environmental state value e. In order to measure these environmental state values e, the measuring means 6 is disposed at a location suitable for measuring each environmental state value e, for example, outdoors of the steam utilization facility 1 as shown in FIG. The measuring means 6 is configured to be able to transmit the measured environmental state value e to the central management device 8 by communication. Note that the measurement of weather-related information in the measuring means 6 includes measuring the atmospheric pressure and determining the weather based on this, or acquiring information related to the weather measured by accessing a database of the Japan Meteorological Agency. .

  The detector 7 detects, as the operation state value o, the temperature of the device, the ultrasonic vibration and sound generated from the device, the pressure and flow rate of the steam passing through the device, the power consumption of the device, and the like as the operation state value o. . The detector 7 is directly or indirectly arranged with respect to each device so that the operation state value o can be measured. The detector 2 is configured to be able to transmit the detected operation state value o to the central management device 8 by communication.

  As shown in FIG. 2, the central management device 8 includes an input unit 9 that acquires an environmental state value e and an operational state value o, and a determination unit 10 that makes a predetermined determination based on the acquired environmental state value and operational state value. The communication unit 11 that issues an alarm according to the determination result, the storage unit 12 that stores various determination criteria in the determination unit 10, and the determination criteria in the determination unit 10 based on the acquired environmental state value And a determination reference correction unit 13 for correction.

  In general, due to changes in environmental state values e such as weather, ambient temperature, humidity, and air volume, the heat radiation state from each part such as the steam generating equipment 2, the steam using equipment 3, and the steam piping 4 in the operation of the steam using facility 1 is (For example, when the pipe 4 gets wet or the ambient temperature of the pipe 4 decreases due to rain, the amount of heat released from the pipe 4 increases.) When the heat dissipation state changes, a situation occurs in which the operation efficiency of the steam generating device 2 or the steam using device 3 decreases or the heat dissipation amount from the pipe increases. Decrease, increase in steam consumption in the steam using device 3, and increase in condensate generation in the steam using device 3 and the steam pipe 4 occur. If this happens, the steam production facility 1 will malfunction due to a shortage of steam due to a decrease in steam generation or an increase in steam consumption, or heat transfer will be hindered due to an increase in the amount of condensate generated, causing corrosion of pipes and water hammer. There is a risk of occurrence.

  Therefore, in this central management device 8, after setting a set warning amount that may cause some trouble in the steam utilization facility 1 for each of the condensate generation amount, the steam generation amount, and the steam consumption amount, In the correlation between the environmental state value e and the condensate generation amount in the steam utilization facility 11 in which the condensate generation amount changes in accordance with the change in the environmental state value e, the condensate generation amount changes in the increasing direction and becomes the set warning amount. In the correlation between the environmental state value e and the steam generation amount in the steam utilization facility 1 in which the steam generation amount changes as the environmental state value e changes, the environmental state value e is stored as the first warning state value. In the steam utilization facility 1 in which the environmental state value e when the steam generation amount changes in the decreasing direction and becomes the set warning amount is stored as the second warning state value, and the steam consumption changes as the environmental state value e changes. Correlation between environmental condition value e and steam consumption There are, are stored environmental condition value e when the steam consumption is set alert volume changes in the increasing direction as a third alarm state value.

  And in the determination part 10, the environmental state value e acquired by the input part 9 changed to the increase direction of the condensate generation amount, and reached the 1st warning state value, or changed to the decrease direction of the steam production amount. It is determined whether the second warning state value has been reached and whether the steam consumption has changed to the third warning state value.

  The determination unit 10 weights each acquired environmental state value e and makes a determination using a value normalized to a single value. The first to third warning state values are the normalized environmental state values. For e, this is the value when the condensate generation amount, the steam generation amount, and the steam consumption amount become the set warning amount.

  Alternatively, the first to third warning state values are set for each environmental state value e (that is, the weather information and the first to third warning state values are set for each temperature), and the environment acquired by the determination unit 10 The format which compares with the 1st-3rd warning state value corresponding to every state value e may be sufficient.

  Furthermore, when the determination unit 10 determines that the acquired environmental state value e has reached one of the first to third warning state values, the communication unit 11 determines that the environmental state value e is the first to third warnings. An alarm indicating which state value has been reached is issued. For example, in response to an alarm (not shown), an administrator or manager of the steam utilization facility 1 that transmits an instruction to issue an alarm that the environmental state value e has reached one of the first to third warning state values. For example, the environmental status value e is transmitted to the communication terminal such as a computer or a mobile phone of a trader, which of the first to third warning status values has been reached, and the countermeasure information.

  Thereby, it is possible to quickly cope with various problems based on the increase in the amount of condensate generation, the decrease in the steam generation amount, and the increase in the steam consumption.

  In addition, the determination unit 10 compares each acquired operation state value o with a determination criterion set for each operation state value o stored in the storage unit 12 to determine whether the monitoring target device has failed. judge.

  When the environmental state value e changes to cause changes in the amount of steam generated / consumed and the amount of condensate generated, some influence also occurs on the operating state value o of each device constituting the steam utilization facility 1. For example, when the environmental state value e changes and the steam consumption increases or the condensate generation amount increases, the load on the steam using device 3 that consumes steam increases, and the operation state value o (for example, temperature It is conceivable that changes will also occur in the motor, the vibration, the rotational speed of the motor and the turbine, and the power consumption. Then, when the operating state value o of the monitoring target device changes due to the change of the environmental state value e, the changed operating state value o exceeds the determination criterion even though the monitoring target device does not actually have a failure. Therefore, the determination unit 10 may determine that the monitoring target device is out of order.

Therefore, in the central management device 8 as the determination means, the determination reference used for determination is corrected by the determination reference correction unit 13 based on the acquired environmental state value e, and the determination unit 10 uses the corrected determination reference. Determine whether the monitored device has failed. Thereby, the erroneous determination of the determination means based on the change of the environmental state value e can be avoided.

  Using the management system as described above, the environmental state value e and the operational state value o of each device of the steam utilization facility 1 are acquired regularly or constantly, and based on the environmental state value e and the operational state value o. Manage steam utilization equipment 1.

  Conventionally, the operation state value o of each device of the steam utilization facility 1 is acquired regularly or constantly from the detector 7, and the steam generation amount, the steam consumption amount, and the condensate generation amount change based on the operation state value o. The steam utilization facility 1 is managed in anticipation of the above, but in the steam utilization facility management method of the present invention, not only the operation state value o of each device of the steam utilization facility 1 is acquired from the detector 7 but also measured. The environmental state value e is acquired by means 6, and based on the change of the environmental state value e, changes in the steam generation amount, steam consumption amount, and condensate generation amount are detected, and whether each device is malfunctioning or not. In order to correct the criteria for determining the operating state value o, changes in steam generation, steam consumption, and condensate generation are reliably foreseen, and misjudgment of each device failure based on changes in the environmental state value e Can be avoided.

(Another embodiment)
Next, another embodiment will be listed.

  In the above-described embodiment, the measuring unit 6 is arranged outdoors of the steam utilization facility 1 and the weather information and the temperature are measured as the environmental state value e. The location may be appropriately selected as necessary, and various values such as the ambient temperature, humidity, and air volume of each device may be measured as necessary. When measuring the ambient temperature of each device, the measuring means 6 may be installed around each device, and the measuring means 6 may be integrated with the detector 7.

  In the above-described embodiment, the storage unit 12 stores the environmental state value e when the condensate generation amount changes in the increasing direction and becomes the set warning amount as the first warning state value, and the steam generation amount decreases in the decreasing direction. The environmental state value e when changing to the set warning amount is stored as the second warning state value, and the environmental state value e when the steam consumption changes in the increasing direction to become the set warning amount is set to the third warning state. Although what was memorized as a value was shown, it is not limited to this, and the environmental condition value e and steam generation amount when the condensate generation amount changes in the decreasing direction and becomes the set warning amount changes in the increasing direction. The environmental state value e when the amount is reached or the environmental state value e when the steam consumption changes in the decreasing direction and becomes the set warning amount may be further stored as a warning state value. In this case, in the determination unit 10, the environmental state value e acquired by the input unit 9 changes in the decreasing direction of the condensate generation amount and reaches the warning state value, or changes in the direction of increase in the steam generation amount and is in warning. What is necessary is just to determine whether it reached the state value or it changed to the decreasing direction of steam consumption, and reached the warning state value.

  In the above-described embodiment, the detector 7 detects the steam generation device 2, the steam using device 3, and the operation state value o of the steam trap 5 as the monitoring target device. The operation state value o of another device such as a valve may be detected, or the operation state value o may be detected by focusing on a specific device such as only the steam trap 5.

  The steam utilization equipment management method and the steam utilization equipment management method of the present invention can be applied to the management of various plants and factories in various fields.

1 Steam utilization equipment 2 Equipment to be monitored (steam generation equipment)
3 Monitoring target equipment (steam consuming equipment)
5 Monitoring target equipment (steam trap)
6 Measuring means 7 Detector 8 Alarm means, judgment means (central management device)
e Environmental state value o Operating state value

Claims (7)

In the correlation between the environmental state value and the amount of condensate generated in a steam-using facility where the amount of condensate generated changes as the environmental state value changes, the environmental state value when the condensate generated amount reaches the set warning amount Set as value,
A steam utilization facility management method that issues an alarm when an actual environmental state value measured by a measuring means changes in the direction of increasing condensate generation and reaches the set warning state value. A steam utilization facility that implements the management method of the steam utilization facility according to claim 1,
Steam utilization equipment provided with alarm means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the direction of increasing condensate generation and reaches the set warning state value. In the correlation between the environmental state value and the steam generation amount in the steam utilization facility where the steam generation amount changes with the environmental state value change, the environmental state value when the steam generation amount becomes the set warning amount is set as the warning state value And
A method of managing steam utilization equipment that issues an alarm when an actual environmental state value measured by a measuring means changes in a direction of decreasing steam generation and reaches the set warning state value. A steam utilization facility that implements the steam utilization facility management method according to claim 3,
Steam utilization equipment provided with warning means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the direction of decreasing steam generation amount and reaches the set warning state value. In the correlation between the environmental state value and the steam consumption in a steam-using facility where the steam consumption changes as the environmental state value changes, the environmental state value when the steam consumption reaches the set warning amount is set as the warning state value And
A method of managing steam utilization equipment that issues an alarm when an actual environmental state value measured by a measuring means changes in an increasing direction of steam consumption and reaches the set warning state value. A steam utilization facility that implements the steam utilization facility management method according to claim 5,
Steam utilization equipment provided with warning means for issuing an alarm when the actual environmental state value measured by the measuring means changes in the direction of increasing steam consumption and reaches the set warning state value. A detector that detects the operating state value of the monitored device;
Determination means for determining whether the monitored device is out of order based on the detected operating state value;
The steam utilization facility according to claim 2, 4, or 6, wherein the determination unit is configured to correct a failure determination criterion of a monitored device based on an environmental state value measured by the measurement unit.

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