JP2022172682A - Condensate pump control device and condensate pump controlling method - Google Patents

Abstract

To provide a condensate pump control device and a condensate pump controlling method, capable of further certainly supplying condensate according to a required load of a generator while suppressing power consumption due to the driving of the condensate pump.SOLUTION: A condensate pump control device 1 is equipped with a required load information obtaining portion 12 that obtains a required load of a generator 30, a drive unit number changing portion 15 that changes the number of drive units of a condensate pump 110 of a condenser 40 according to the required load obtained by the required load information obtaining portion 12, and a regeneration state determining portion 14 that determines whether it is in a regeneration state in which regeneration processing of a condensate demineralizer 120 demineralizing condensate sent from the condensate pump 110 is performed or in a non-regeneration state in which the regeneration processing is not performed. In the regeneration state, the required load that is a changing reference of the number of the drive units by the drive unit number chancing portion 15 is lower than the required load that is a changing reference of the number of the drive units in the non-regeneration state.SELECTED DRAWING: Figure 3

Description

The present invention relates to a condensate pump control device and a condensate pump control method.

2. Description of the Related Art Conventionally, a power generation facility is known that includes a condensate desalination device that desalinates condensate obtained from a condenser and a plurality of pumps that send out the condensate. Patent document 1 describes this type of power generation equipment. Patent Literature 1 describes power generation equipment that increases or decreases the number of pumps to be driven in accordance with an increase or decrease in the output of a generator.

JP 2011-102539 A

By the way, since the ion exchange capacity of the condensate demineralizer decreases as the condensate flows, it is necessary to regenerate it. When the condensate demineralizer is regenerated, the amount of condensate used increases. Therefore, even if the number of driven pumps is increased or decreased according to the output of the generator as in the technique of Patent Document 1, there is a possibility that condensate water cannot be supplied at a flow rate corresponding to the required load. Therefore, in consideration of the flow rate of condensate used for regeneration of the desalination equipment, the required load, which is the standard for changing the number of condensate pumps to be driven, may be set low in advance. There is room for improvement, as sometimes more condensate pumps than necessary are driven.

The present invention provides a condensate pump control device and a condensate pump control method that can more reliably supply condensate in accordance with the required load of a generator while suppressing power consumption caused by driving the condensate pump. With the goal.

The present invention includes an acquisition unit that acquires a required load of a generator, a driven number change unit that changes the number of driven condensate pumps of a condenser according to the required load acquired by the acquisition unit, and a determination unit that determines whether the condensate demineralizer for desalinating condensate sent from the condensate pump is in a regeneration state in which regeneration processing is being performed or in a non-regeneration state in which the regeneration processing is not performed; wherein, in the regeneration state, the required load serving as a reference for changing the number of driven units by the driving number changing unit is lower than the required load serving as a reference for changing the number of driven units in the non-regenerating state. Regarding the device.

The required load serving as a reference for changing the number of driven vehicles has an increasing required load serving as a basis for increasing the number of driven vehicles and a decreasing required load serving as a basis for decreasing the number of driven vehicles, and the increasing side The required load is greater than the decreasing side required load.

Further, the present invention includes an acquisition step of acquiring a required load of a generator, and a driven number changing step of changing the number of driven condensate pumps of a condenser according to the required load acquired in the acquiring step, a determination step of determining whether the condensate demineralizer for desalinating the condensate sent from the condensate pump is in a regeneration state in which regeneration processing is being performed or in a non-regeneration state in which the regeneration processing is not performed; wherein, in the regeneration state, the required load serving as a reference for changing the number of driven units in the step of changing the number of driven units is lower than the required load serving as a reference for changing the number of driven units in the non-regenerating state. Regarding the control method.

According to the present invention, there is provided a condensate pump control device and a condensate pump control method that can more reliably supply condensate in accordance with the required load of a generator while suppressing power consumption caused by driving the condensate pump. can.

It is a figure which shows the power generation equipment in which the condensate pump control apparatus which concerns on one Embodiment of this invention is used. It is a figure which shows the condensate demineralization apparatus of the power generation equipment in which the condensate pump control apparatus which concerns on one Embodiment of this invention is used. 1 is a block diagram showing an electrical configuration of a condensate pump control device according to an embodiment of the invention; FIG. 4 is a flow chart showing the flow of processing of the condensate pump control device according to the embodiment of the present invention; 4 is a flow chart showing the flow of processing of the condensate pump control device according to the embodiment of the present invention;

Preferred embodiments of the present invention are described below with reference to the drawings. However, the present invention is not limited to the following embodiments.

A condensate pump control device 1 according to an embodiment of the present invention is a device that controls driving of a condensate pump 110 of a condenser 40 . Before explaining the condensate pump control device 1, first, the power generation equipment 2 in which the condensate pump control device 1 is used will be explained with reference to FIG. FIG. 1 is a diagram showing a power generation facility 2 in which a condensate pump control device 1 is used.

The power generation facility 2 is a facility for generating power by driving a power generator 30 by rotating a steam turbine 20 in a thermal power plant.

The power generation equipment 2 includes a boiler (not shown), a steam turbine 20, a generator 30, a condenser 40, a condensate system 100 including a condensate pump 110 of the condenser 40, etc., and a feedwater pump 50, etc. Mainly provided with a water supply system 60 including.

A boiler is a device that generates steam. Specifically, the boiler evaporates the feed water supplied from the water supply system 60 to generate steam. The boiler then superheats the generated steam to generate high-temperature, high-pressure superheated steam. Superheated steam generated by the boiler is supplied to the steam turbine 20 .

The steam turbine 20 is rotationally driven by superheated steam supplied from the boiler. The rotating shaft of the steam turbine 20 is arranged coaxially with the rotating shaft of the generator 30 . A rotating shaft of the steam turbine 20 and a rotating shaft of the generator 30 are connected to each other.

The generator 30 is driven by the rotation of the steam turbine 20 to generate electricity.

The condenser 40 is a device that recovers the steam discharged from the steam turbine 20 and returns it to water. The steam discharged from the steam turbine 20 flows into the condenser 40 and is condensed by heat exchange with cooling water flowing through a cooling pipe (not shown) of the condenser 40 to become condensed water. .

Condensate obtained from the condenser 40 is supplied via the condensate system 100 to the water supply system 60 provided with the water supply pump 50 . The condensate system 100, as shown in FIG. , a deaerator 160 , a pure water tank 170 and a condensate tank 180 .

The condensate pump 110 sends out the condensate in the condenser 40 toward the water supply system 60 side. Condensate pumps 111 , 112 , and 113 that are three condensate pumps 110 are provided in the power generation facility 2 of the present embodiment. The condensate sent from each of the condensate pumps 111 to 113 flows through the condensate pipe 101 via the on-off valve 114 and is sent to the condensate demineralizer 120 .

Driving of the condensate pump 110 is controlled by the condensate pump controller 1 . The condensate pump control device 1 controls the number of condensate pumps 110 to be driven and the discharge amount of condensate according to the required load of the generator 30 . The configuration of the condensate pump control device 1 will be described later.

The condensate demineralizer 120 is a device that demineralizes the condensate sent from the condensate pump 110 in order to prevent corrosion of the boiler, the steam turbine 20, and the like. In this embodiment, the condensate demineralizer 120 includes three mixed-bed demineralizers 121 to 123, on-off valves 124 and 125 arranged in the condensate pipe 101, a regeneration tower (not shown), and a resin storage tank. (illustration omitted) is mainly provided. The condensate desalted by the condensate demineralizer 120 flows through the condensate pipe 101 via the on-off valve 125 and is sent to the condensate booster pump 130 . The details of the condensate desalination process by the condensate desalinator 120 will be described later.

A bypass line 102 having an on-off valve 115 is connected between the on-off valve 114 and the on-off valve 124 of the condensate pipe 101 . By opening the on-off valves 114 and 115 and closing the on-off valves 124 and 125, the condensate sent from the condensate pump 110 is sent from the bypass line 102 to the condensate booster pump 130 without passing through the condensate demineralizer 120. be able to.

The condensate booster pump 130 is a device that pressure-feeds the condensate desalted by the condensate demineralizer 120 to the heat exchange unit 140 . In the power generation equipment 2 of the present embodiment, three condensate booster pumps 131, 132, and 133, which are condensate booster pumps 130, are provided. The number of condensate booster pumps 130 to be driven is changed according to the required load of the generator 30 .

The heat exchange unit 140 mainly includes a condensate heat exchanger 141 , an intercooler 142 , an aftercooler 143 , a ground condenser 144 , a sealed water recovery tank 145 and a drain cooler 146 .

The condensate heat exchanger 141 exchanges heat between the condensate pressure-fed from the condensate booster pump 130 and the water used as cooling water for bearings (not shown) of the steam turbine 20 . The condensate heat-exchanged in the condensate heat exchanger 141 is sent to the ground condenser 144 after being cooled by the intercooler 142 or the aftercooler 143 . Gland condenser 144 allows heat exchange between condensate and shaft seal water of steam turbine 20 . Condensate heat-exchanged in the ground condenser 144 is sent to the drain cooler 146 or the sealed water recovery tank 145 . The condensate sent to the drain cooler 146 is heat-exchanged with the drain generated by cooling the bleed air of the steam turbine 20 . On the other hand, the condensed water sent to the sealed water recovery tank 145 is returned to the condenser 40 .

A low-pressure feedwater heater 150 heats condensate with extraction air from the steam turbine 20 . The low-pressure feed water heater 150 has a first heater 151 , a second heater 152 , a third heater 153 and a fourth heater 154 . Condensate heated by the low-pressure feed water heater 150 is supplied to the deaerator 160 .

The deaerator 160 has a function of heating condensate with steam from the steam turbine 20 and physically separating and removing dissolved gas in the condensate. The condensate deaerated by the deaerator 160 flows through the water supply pipe 103 and is sent to the water supply system 60, returned to the condenser 40, or released to the atmosphere.

The pure water tank 170 is a tank that stores pure water. The pure water in the pure water tank 170 is sent to the condensate tank 180 or the condenser 40 by the starting make-up water pump 171 and the make-up water pump 172 . Specifically, the pure water in the pure water tank 170 flows through the first makeup water pipe 105 and is sent to the condensate tank 180, or flows through the first makeup water pipe 105 and the second makeup water pipe 106, and flows through the condenser 40. sent to

The condensate tank 180 is a tank that stores condensate. The condensate in the condensate tank 180 is sent to the condenser 40 or sent to the condensate pump 110 or the water supply pump 50 by the seal water pump 173 and used as seal water.

Condensate sent from the condensate system 100 is sent to the boiler as feed water by a plurality of feed water pumps 50 provided in the water supply system 60 .

The feed water sent from the feed water system 60 to the boiler is again evaporated by the boiler, superheated, and supplied to the steam turbine as superheated steam.

Next, the condensate desalination process by the condensate desalinator 120 and the regeneration process for the condensate desalinator 120 will be described with reference to FIG. FIG. 2 is a schematic diagram showing a condensate demineralization device 120 of the power generation facility 2 in which the condensate pump control device 1 is used.

The desalting treatment of condensate will be described. Each of the demineralization towers 121 to 123 of the condensate demineralization apparatus 120 is filled with an ion exchange resin. As shown in FIG. 2, the condensate sent from the condensate pump 110 flows into the demineralization towers 121-123 from the upper part of the demineralization towers 121-123 through the on-off valve 124. As shown in FIG. The condensate that has flowed into the demineralization towers 121 to 123 moves between the ion exchange resins from the top to the bottom. As a result, metal ions such as sodium ions and chloride ions in the condensate are removed by the ion exchange resin. The condensate demineralized in the demineralization towers 121 to 123 flows from the bottom of the demineralization towers 121 to 123 through the opening/closing valve 124 through the condensate pipe 101 and is sent to the condensate booster pump 130 .

The ion exchange resin of the condensate desalinator 120 increases the amount of metal ions adsorbed as the condensate flows, and its ion exchange capacity decreases. Therefore, when the flow rate of condensate reaches a predetermined amount, it is necessary to carry out a regeneration process to regenerate the ion exchange resin whose ion exchange capacity has decreased.

A flow of regeneration processing of the condensate demineralization device 120 will be described. First, the condensate is supplied from the bottom to the top of the demineralization towers 121 to 123 where the flow rate of condensate reaches a predetermined value, and the ion exchange resin is sent to the regeneration tower. Next, the ion-exchange resin is subjected to backwashing or the like in a regeneration tower to remove metal ions adsorbed on the ion-exchange resin. After washing the demineralization towers 121 to 123 from which the ion-exchange resin has been delivered, the regenerated ion-exchange resin is sent from the resin storage tank to the demineralization towers 121 to 123 to complete the regeneration process.

Here, in order for the power generator 30 to output electric power corresponding to the required load, the necessary amount of water is supplied from the condensate pump 110 through the water supply system 60 to generate the superheated steam corresponding to the required load. must be supplied to the boiler. In the regeneration state in which the condensate demineralization device 120 is being regenerated, condensate is also used in the regeneration process. flow rate decreases. Therefore, in the regeneration state, more condensate must be pumped out of the condensate pump 110 than in the non-regeneration state.

For example, in the power generation equipment 2 of this embodiment, when the required load of the generator 30 is 175 MW, the flow rate of condensate that needs to be supplied to the water supply system 60 is 416 t/h. The rated flow per unit of the condensate pump 110 is 435t/h. Also, the flow rate of condensate used in the regeneration process of the condensate demineralizer 120 is 105 t/h. In this case, in the non-regeneration state, one condensate pump 110 can supply condensate that satisfies the required load of the generator 30, but in the regeneration state in which 105 t/h of condensate is used for the regeneration process, one condensate pump is required. The water pump 110 cannot supply condensate to meet the required load.

Regarding this point, the condensate pump control device 1 of the present embodiment reduces power consumption caused by driving the condensate pump 110, and more reliably avoids a state in which condensate is not supplied in accordance with the required load. It is designed for a purpose.

Next, the condensate pump control device 1 will be described with reference to FIG. FIG. 3 is a block diagram showing the electrical configuration of the condensate pump control device 1. As shown in FIG.

As shown in FIG. 3, the condensate pump control device 1 includes a condensate pump information acquisition unit 11, a required load information acquisition unit 12, a regeneration processing information acquisition unit 13, a regeneration state determination unit 14, and a driving number change unit. A unit 15 , a change reference value setting unit 16 , and an output unit 17 are provided.

The condensate pump information acquisition unit 11 acquires information about the driving status of the condensate pump 110 . The drive status of the condensate pump 110 includes whether or not each of the condensate pumps 111 to 113 is activated, the discharge amount of each of the condensate pumps 111 to 113, and the like.

The required load information acquisition unit 12 acquires information about the required load of the generator 30 . For example, the required load information acquisition unit 12 may acquire information about the required load of the generator 30 by receiving an output command or the like sent from a control device (not shown) of the power generation equipment 2 .

The regeneration processing information acquisition unit 13 acquires information on the regeneration processing of the condensate demineralizer 120 . For example, the regeneration processing information acquisition unit 13 may acquire regeneration processing start information indicating that the regeneration processing of the condensate demineralizer 120 is to be started and regeneration processing completion information indicating that the regeneration processing is to be completed. Information indicating that the water desalination device 120 is being regenerated may be obtained.

The regeneration state determination unit 14 determines whether the condensate desalination device 120 is in a regeneration state based on the information regarding the regeneration processing of the condensate desalination device 120 acquired by the regeneration processing information acquisition unit 13 . It is determined whether it is in a non-reproduction state in which reproduction processing is not being performed. For example, the reproduction state determination unit 14 determines that the state is the reproduction state from when the reproduction processing information acquisition unit 13 acquires the reproduction processing start information until the reproduction processing completion information is acquired, and otherwise determines that the state is the non-reproduction state. It may be determined that Further, for example, the reproduction state determination unit 14 determines that the reproduction processing information acquisition unit 13 is in the reproduction state until a predetermined time has elapsed since the reproduction start information is acquired, and otherwise the non-reproduction state is determined. can be determined. Further, for example, the regeneration state determination unit 14 determines that the condensate demineralization apparatus 120 is in the regeneration state while acquiring information indicating that the condensate demineralization apparatus 120 is in the regeneration process, and otherwise determines the non-regeneration state. It may be determined that

The change reference value setting unit 16 sets a required load (hereinafter referred to as a change reference value) as a reference for changing the number of driven condensate pumps 110 based on the determination result of the regeneration state determination unit 14 . The change reference value setting unit 16 sets a different change reference value depending on whether the reproduction state determination unit 14 determines that the playback state is the playing state or the non-playing state. Specifically, the change reference value setting unit 16 sets a lower change reference value when the reproduction state is determined than when the non-reproduction state is determined.

The change reference value set by the change reference value setting unit 16 is an increase side change reference value (increase side required load) that serves as a reference for increasing the number of driven condensate pumps 110, and a reference for decreasing the number of driven condensate pumps. Decrease side change reference value (decrease side required load). Further, the increasing side change reference value may be larger than the decreasing side change reference value.

In the present embodiment, for example, the change reference value setting unit 16 sets the first increase side change reference value to 175 MW when increasing the number of condensate pumps 110 to be driven from one to two in the non-regeneration state, and increases the number of driven condensate pumps 110 to 175 MW. The first decrease-side change reference value when reducing from two to one may be 173 MW. Further, for example, the change reference value setting unit 16 sets the second increase-side change reference value to 140 MW when increasing the number of condensate pumps 110 to be driven from one to two in the regeneration state, and increases the number of condensate pumps 110 to be driven from two to one. 140 MW may be used as the second reduction-side change reference value when reducing to 140 MW.

The driven number change unit 15 changes the number of driven condensate pumps 110 of the condenser 40 according to the required load of the generator 30 acquired by the required load information acquisition unit 12 . Specifically, the number-of-drives change unit 15 restores based on information about the driving status of the condensate pump 110, information about the required load of the generator 30, and the change reference value set by the change reference value setting unit 16. The number of water pumps 110 to be driven is changed. The number-of-drives changer 15 also controls the discharge amount per condensate pump 110 .

The output unit 17 outputs the result of determination by the reproduction state determination unit 14 to the display unit 18 . Note that the display unit 18 is a monitor that displays whether it is in a playback state or in a non-playback state.

Next, an example of control processing of the condensate pump 110 by the condensate pump control device 1 will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is a flowchart showing an example of the flow of processing by the condensate pump control device 1 when the number of condensate pumps 110 to be driven is increased from one to two. FIG. 5 is a flowchart showing an example of the flow of processing by the condensate pump control device 1 when the number of condensate pumps 110 to be driven is reduced from two to one.

As shown in FIG. 4 , in step S<b>11 , the driven number changing unit 15 changes the number of driven condensate pumps 110 to 1 based on the information about the driving status of the condensate pumps 110 acquired by the condensate pump information acquisition unit 11 . It is determined whether or not it is below the table. When the drive number change unit 15 determines that the number of condensate pumps 110 is one or less (YES in step S10), the process proceeds to step S11. On the other hand, when the drive number change unit 15 determines that the number of condensate pumps 110 is not one or less (NO in step S11), the process proceeds to step S17.

In step S<b>12 , the regeneration state determination unit 14 determines whether or not the condensate water demineralization device 120 is in the regeneration state based on the information regarding the regeneration process of the condensate demineralization device 120 acquired by the regeneration process information acquisition unit 13 . When the reproduction state determination unit 14 determines that the non-reproduction state is established (NO in step S12), the process proceeds to step S13. On the other hand, if the playback state determination unit 14 determines that the playback state is set (YES in step S12), the process proceeds to step S14.

In step S13, the driven number changing unit 15 determines whether or not the required load of the generator 30 acquired by the required load information acquiring unit 12 is equal to or greater than the first increasing side change reference value set by the change reference value setting unit 16. do. In this embodiment, the first increasing side change reference value is 175 MW. When the drive number change unit 15 determines that the required load is 175 MW or more (YES in step S13), the process proceeds to step S16. On the other hand, when the driving number change unit 15 determines that the required load is less than 175 MW (NO in step S13), the process returns to step S12.

In step S<b>14 , the output unit 17 outputs to the display unit 18 the determination result by the reproduction state determination unit 14 in step S<b>12 . That is, the display unit 18 displays that it is in the playback state. Accordingly, it is possible to inform the worker that the situation is that a larger amount of condensate is used than in the normal non-regeneration state.

In step S15, the driven number changing unit 15 determines whether or not the required load of the generator 30 acquired by the required load information acquiring unit 12 is equal to or greater than the second increasing side change reference value set by the change reference value setting unit 16. do. In this embodiment, the second increasing side change reference value is 140 MW. When the drive number change unit 15 determines that the required load is 140 MW or more (YES in step S15), the process proceeds to step S16. On the other hand, when the driving number change unit 15 determines that the required load is less than 140 MW (NO in step S15), the process returns to step S12.

In step S16, the driven number changing unit 15 activates the second condensate pump 110, and the process proceeds to step S17.

As shown in FIG. 5 , in step S<b>17 , the regeneration state determination unit 14 determines whether or not the condensate demineralizer 120 is in the regeneration state based on the information regarding the regeneration process of the condensate demineralization device 120 acquired by the regeneration process information acquisition unit 13 . judge. When the reproduction state determination unit 14 determines that the non-reproduction state is set (NO in step S17), the process proceeds to step S18. On the other hand, if the playback state determination unit 14 determines that the current state is the playback state (YES in step S17), the process proceeds to step S19.

In step S18, the driven number changing unit 15 determines whether or not the required load of the generator 30 acquired by the required load information acquiring unit 12 is equal to or less than the first decreasing side change reference value set by the change reference value setting unit 16. do. In this embodiment, the first decreasing side change reference value is 173 MW. When the drive number change unit 15 determines that the required load is 173 MW or less (YES in step S18), the process proceeds to step S21. On the other hand, when the drive number change unit 15 determines that the required load is over 173 MW (NO in step S18), the process returns to step S17.

In step S<b>19 , the output unit 17 outputs to the display unit 18 the determination result by the reproduction state determination unit 14 in step S<b>17 . That is, the display unit 18 displays that it is in the playback state. Accordingly, it is possible to inform the worker that the situation is that a larger amount of condensate is used than in the normal non-regeneration state.

In step S20, the driven number changing unit 15 determines whether or not the required load of the generator 30 acquired by the required load information acquiring unit 12 is equal to or less than the second decreasing side change reference value set by the change reference value setting unit 16. do. In this embodiment, the second decreasing side change reference value is 140 MW. When the drive number change unit 15 determines that the required load is 140 MW or less (YES in step S20), the process proceeds to step S21. On the other hand, when the driven number change unit 15 determines that the required load is over 140 MW (NO in step S20), the process returns to step S17.

In step S21, the driven number changing unit 15 stops one condensate pump 110, and returns the process to step S12. Then, the condensate pump control device 1 repeats the processing from step S12.

The condensate pump control device 1 according to the present embodiment described above has the following effects.

The condensate pump control device 1 according to the present embodiment includes a required load information acquiring unit 12 that acquires the required load of the generator 30, and according to the required load acquired by the required load information acquiring unit 12, the condenser 40 Is the regeneration state in which the number-of-drives changing unit 15 that changes the number of driven condensate pumps 110 and the condensate demineralizer 120 that desalinates the condensate sent from the condensate pumps 110 are being regenerated? a reproduction state determination unit 14 for determining whether a non-reproduction state in which reproduction processing is not performed; It is lower than the required load, which is the basis for changing the number of driven units.

As a result, the required load, which is the basis for changing the number of driven condensate pumps 110 in the regeneration state and the non-regeneration state, is changed in consideration of the increase in the amount of condensate used due to the regeneration process. In both states, the number of condensate pumps 110 to be driven can be optimized. That is, in the non-regeneration state in which the condensate demineralizer 120 is not being regenerated, it is possible to supply the condensate flow rate according to the required load without activating an excessive number of condensate pumps 110. In regeneration conditions where regeneration of 120 requires more condensate than normal, the condensate flow rate can be increased quickly. Therefore, while suppressing power consumption caused by the condensate pump 110, even when the condensate desalination device 120 is regenerated, it is possible to more reliably supply the flow rate of condensate according to the required load.

The condensate pump control method according to the present embodiment includes an acquisition step of acquiring the required load of the generator 30, and the number of driven condensate pumps 110 of the condenser 40 according to the required load acquired in the acquisition step. A step of changing the number of driven units to be changed, and a regeneration state in which regeneration processing is being performed or a non-regeneration state in which regeneration processing is not performed for the condensate desalination device 120 that desalinates the condensate sent from the condensate pump 110 and a determination step of determining whether the number of driven units is changed in the regeneration state, the required load serving as the criterion for changing the number of driven units in the step of changing the number of driven units is lower than the required load serving as the criterion for changing the number of driven units in the non-regenerating state.

As a result, the required load, which is the basis for changing the number of driven condensate pumps 110 in the regeneration state and the non-regeneration state, is changed in consideration of the increase in the amount of condensate used due to the regeneration process. In both states, the number of condensate pumps 110 to be driven can be optimized. That is, in the non-regeneration state in which the condensate desalination device 120 is not being regenerated, the condensate flow rate corresponding to the required load can be supplied without excessively activating the condensate pump 110, and the condensate desalination device 120 If regeneration requires more condensate than normal, the condensate flow rate can be increased quickly. Therefore, while suppressing power consumption caused by the condensate pump 110, even when the condensate desalination device 120 is regenerated, it is possible to more reliably supply the flow rate of condensate according to the required load.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified as appropriate.

In the above-described embodiment, the condensate pump control device 1 includes the output unit 17 that outputs the determination result of the regeneration state determination unit 14 to the display unit 18. However, the output unit 17 may be omitted.

In the above-described embodiment, the change reference value setting unit 16 sets the first increase-side change reference value to be larger than the first decrease-side change reference value, but the first increase-side change reference value and the second decrease-side change reference value You may set the values to be equal.

Further, for example, the change reference value setting unit 16 sets the first increase-side change reference value to be greater than the first decrease-side change reference value, and sets the second increase-side change reference value to be greater than the second decrease-side change reference value. May be set. That is, in the condensate pump control device 1, the required load serving as a reference for changing the number of driven pumps includes an increasing required load serving as a reference for increasing the number of driven pumps and a decreasing required load serving as a reference for decreasing the number of driven pumps. and the increase-side required load may be larger than the decrease-side required load.

This prevents the condensate pump 110 from repeatedly starting and stopping when the demanded load fluctuates in the vicinity of the demanded load on the increasing side or the demanded load on the decreasing side because the demanded load on the increasing side is greater than the demanded load on the decreasing side. can. Therefore, it is possible to suppress power consumption due to generation of unnecessary starting power for the condensate pump 110 .

In the above embodiment, the power generation equipment 2 is provided with three condensate pumps 110 and three condensate booster pumps 130, but the number of condensate pumps 110 and condensate booster pumps 130 is not particularly limited. . For example, the number of condensate pumps 110 and condensate booster pumps 130 may be two or less, or four or more.

1 condensate pump control device 12 request load information acquisition unit (acquisition unit)
14 regeneration state determination unit 15 drive number change unit 30 power generator 40 condenser 110 condensate pump 120 condensate demineralizer

Claims (3)

an acquisition unit that acquires the requested load of the generator;
a driven number changing unit that changes the number of driven condensate pumps of a condenser according to the required load acquired by the acquiring unit;
a determination unit that determines whether the condensate demineralizer for desalting the condensate sent from the condensate pump is in a regeneration state in which regeneration processing is being performed or in a non-regeneration state in which the regeneration processing is not performed; , and
The condensate pump control device, wherein, in the regeneration state, the required load serving as a reference for changing the number of driven units by the unit for changing the number of driven units is lower than the required load serving as a reference for changing the number of driven units in the non-regenerating state. The required load, which serves as a reference for changing the number of driven vehicles, includes an increasing required load, which serves as a basis for increasing the number of driven vehicles, and a decreasing required load, which serves as a basis for decreasing the number of driven vehicles;
2. The condensate pump control device according to claim 1, wherein the increasing side required load is larger than the decreasing side required load. an obtaining step of obtaining the requested load of the generator;
a driven number changing step of changing the number of driven condensate pumps of a condenser according to the required load acquired in the acquiring step;
a determination step of determining whether the condensate demineralizer for desalinating the condensate sent from the condensate pump is in a regeneration state in which regeneration processing is being performed or in a non-regeneration state in which the regeneration processing is not performed; , including
The condensate pump control method, wherein, in the regeneration state, the required load serving as a reference for changing the number of driven units in the step of changing the number of driven units is lower than the required load serving as a reference for changing the number of driven units in the non-regenerating state.

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