CN103363529A - Regulating valve control device of pressurized flowing furnace equipment and control method thereof - Google Patents

Abstract

The regulating valve control device of this pressurized fluid furnace equipment has: a regulating valve which adjusts the bypass amount of the exhaust gas from the supercharger; The difference between the combustion air flow rate of the measured result and the preset flow rate setting value is used to calculate the control amount of the opening and closing regulating valve; the pressure control part is based on the pressure measurement value after measuring the pressure in the pressurized flow furnace The difference between the pressure setting value and the preset pressure value is used to calculate the control amount of the opening and closing regulating valve; the regulating valve control part, when the difference between the combustion air flow rate and the flow rate setting value is outside the predetermined range, according to the flow rate The control amount calculated by the control unit controls the regulating valve, and when the difference between the combustion air flow rate and the flow rate setting value is within a predetermined range, according to the control amount calculated by the flow control unit and the pressure control unit The control amount controls the regulating valve.

Description

Regulating valve control device and control method for pressurized flow furnace equipment

technical field

The invention relates to a control device for a regulating valve of pressurized flow furnace equipment and a method for controlling the control valve of pressurized flow furnace equipment.

This application claims priority based on Japanese Patent Application No. 2012-074811 for which it applied in Japan on March 28, 2012, and uses the content here.

Background technique

The pressurized flow furnace equipment is equipped with a supercharger including a turbine that rotates by combustion exhaust gas discharged from the pressurized flow furnace and a compressor that rotates with the rotation of the turbine, and uses compressed air generated by the compressor as Air for pressurization, flow and combustion of pressurized flow furnace. The pressurized flow furnace equipment is in an autonomous operation state during normal operation, that is, even if the blower for starting is stopped, the compressed air discharged from the compressor can be used to supply the total amount of combustion air required for the processed object to the processed object. It is known that the pressurized flow furnace apparatus can be operated independently, thereby eliminating the need for flow blowers and guide fans previously required, thereby reducing operating costs.

As a pressurized flow furnace facility, there exists a facility described in Patent Document 1, for example. In the pressurized flow incinerator equipment of this patent document 1, the pressure indication regulator calculates the pressure on the inlet side relative to the pressure on the outlet side based on the output side pressure of the compressor of the supercharger and the inlet side pressure of the compressor of the supercharger. The pressure ratio is output to the valve opening calculation unit. The flow indicator regulator calculates the flow rate of the combustion air supplied from the compressor of the supercharger to the pressurized flow furnace and the flow rate of the combustion air supplied from the compressor of the supercharger to a supply target other than the pressurized flow furnace. The total amount of air discharged from the compressor of the supercharger is output to the valve opening calculation unit.

The valve opening calculation unit controls the opening of the pressurized air valve or controls the opening of the wastegate valve 31 based on the outputs of the pressure indicating regulator and the flow indicating regulator.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2011-137576

The problem to be solved by the invention

However, in the pressurized flow incinerator facility shown in Patent Document 1, the combustion air flow rate and combustion air pressure are controlled using a flow regulating valve that maintains the combustion air flow rate at a set flow rate and a pressure regulating valve that regulates the combustion air pressure. The combustion air pressure referred to here is obtained by obtaining the difference between the pressure in the furnace and the constant pressure loss from the pressure gauge to the furnace, and can be used to control the pressure in the furnace. The purpose of the control to keep the combustion air flow rate constant is different from the fluctuation suppression control to keep the furnace pressure constant, so the valve opening calculation unit controls different valves.

Here, when controlling each part of the pressurized flow incinerator facility, it is desirable to make the structure of the facility simpler and to suppress the combustion state to be constant, compared to the case of controlling both the flow regulating valve and the pressure regulating valve.

Contents of the invention

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a control valve control device for a pressurized fluid furnace facility and a control method for a regulator valve for a pressurized fluid furnace facility, which can simplify the facility structure and keep the combustion state constant.

solution

In order to solve the above-mentioned problems, a first aspect of the present invention is a control valve control device for a pressurized fluid furnace facility including a pressurized fluid furnace and a booster including a The combustion exhaust gas discharged from the pressurized fluid furnace rotates the turbine and the compressor rotates with the rotation of the turbine, wherein the regulating valve control device of the pressurized fluid furnace equipment has: a regulating valve, which is set at the The combustion exhaust gas inlet side and the combustion exhaust gas outlet side of the turbine are connected to the combustion exhaust gas bypass flow path, and the bypass amount of the exhaust gas from the supercharger is adjusted; the flow control unit is based on the Calculate the control amount of opening and closing the regulating valve by calculating the difference between the combustion air flow rate and the preset flow rate set value after measuring the combustion air amount supplied by the pressurized flow furnace; the pressure control part, based on the The difference between the pressure measurement value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value is used to calculate the control amount of opening and closing the regulating valve; When the difference between the flow rate set value is outside a predetermined range, the regulator valve is controlled based on the control amount calculated by the flow rate control unit, and the difference between the combustion air flow rate and the flow rate set value When the difference is within a predetermined range, the regulator valve is controlled based on the control amount calculated by the flow rate control unit and the control amount calculated by the pressure control unit.

In addition, a second aspect of the present invention is a control valve control device for a pressurized fluid furnace facility including a pressurized fluid furnace and a booster including The turbine that is rotated by the combustion waste gas discharged from the fluid furnace and the compressor that rotates with the rotation of the turbine, wherein the regulating valve control device of the pressurized fluid furnace equipment has: a regulating valve, which is set to control the combustion of the turbine The exhaust gas inlet side and the exhaust gas outlet side of the combustion exhaust gas are connected to the combustion exhaust gas bypass flow path, and the bypass amount of the exhaust gas from the supercharger is adjusted; the flow control part is based on the Calculate the control amount of opening and closing the regulating valve by calculating the difference between the combustion air flow rate of the measurement result of the supplied combustion air amount and the preset flow rate setting value; The difference between the pressure measurement value and the preset pressure setting value after measuring the pressure in the internal pressure is used to calculate the control amount of opening and closing the regulating valve; When the difference between the fixed value is outside the predetermined range, the regulating valve is controlled based on the control amount calculated by the flow control unit, and when the difference between the combustion air flow rate and the flow rate set value is within a predetermined range If it is within the specified range, the regulating valve is controlled based on the control amount calculated by the pressure control unit.

In addition, the third aspect of the present invention is based on the regulating valve control device of the pressurized fluidized furnace equipment in the above-mentioned first or second aspect, wherein the pressure setting value is equal to the pressure measurement value within a predetermined period of time. average value.

In addition, a fourth aspect of the present invention is the regulator valve control device of the pressurized fluidized furnace equipment in the above-mentioned first to third aspects, wherein the control is performed based on the control amount calculated by the pressure control unit. The period is shorter than a control period for controlling based on the control amount calculated by the flow rate control unit.

In addition, a fifth aspect of the present invention is the regulator valve control device of the pressurized fluidized furnace equipment in the above-mentioned first to fourth aspects, wherein the valve can be opened and adjusted based on the control amount calculated by the pressure control unit. The maximum value of the valve opening of the valve is smaller than the maximum value of the valve opening of the regulating valve that can be opened based on the control amount calculated by the flow rate control unit.

In addition, a sixth aspect of the present invention is based on the regulator valve control device of the pressurized fluidized furnace equipment in the above-mentioned first to fifth aspects, wherein the regulator valve includes a first bypass for predetermined opening degree of the valve. A bypass valve and the second bypass valve with a variable opening degree, the regulating valve control unit controls the opening degree of the second bypass valve according to the control amount.

In addition, the seventh aspect of the present invention is based on the regulating valve control device of the pressurized fluidized furnace equipment in the above-mentioned first to third aspects, wherein the control amount is the opening degree of the regulating valve or the Regulates the control cycle of the valve.

In addition, an eighth aspect of the present invention is a control valve control method for pressurized flow furnace equipment, which is a control valve control method in a control valve control device for pressurized flow furnace equipment. , the pressurized flow furnace equipment is equipped with a pressurized flow furnace and a supercharger including a turbine rotated by combustion exhaust gas discharged from the pressurized flow furnace and a compressor rotated with the rotation of the turbine , wherein, the regulating valve control method of the pressurized flow furnace equipment includes the following steps: the flow control unit is based on the combustion air flow rate as a result of measuring the combustion air amount supplied to the pressurized flow furnace and the preset The difference between the flow rate setting values is calculated to calculate the control amount of the opening and closing regulating valve. The bypass amount of the exhaust gas of the supercharger is adjusted, and the pressure control unit calculates the opening and closing position based on the difference between the measured pressure value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value. When the difference between the combustion air flow rate and the flow rate set value is outside the predetermined range, the regulator valve control unit controls the control amount based on the control amount calculated by the flow rate control unit. the regulating valve, and when the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, based on the control amount calculated by the flow control unit and the pressure control unit calculated The control valve is controlled by the control amount.

In addition, the ninth aspect of the present invention is a method for controlling a regulating valve of pressurized flow furnace equipment. , the pressurized flow furnace equipment is equipped with a pressurized flow furnace and a supercharger including a turbine rotated by combustion exhaust gas discharged from the pressurized flow furnace and a compressor rotated with the rotation of the turbine , wherein, the regulating valve control method of the pressurized flow furnace equipment includes the following steps: the flow control unit is based on the combustion air flow rate as a result of measuring the combustion air amount supplied to the pressurized flow furnace and the preset The difference between the flow rate setting values is calculated to calculate the control amount of the opening and closing regulating valve. The bypass amount of the exhaust gas of the supercharger is adjusted, and the pressure control unit calculates the opening and closing position based on the difference between the measured pressure value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value. When the difference between the combustion air flow rate and the flow rate set value is outside the predetermined range, the regulator valve control unit controls the control amount based on the control amount calculated by the flow rate control unit. The regulator valve is used to control the regulator valve based on the control amount calculated by the pressure control unit when the difference between the combustion air flow rate and the flow rate set value is within a predetermined range.

Invention effect

As described above, according to the present invention, by controlling the regulator valve on the combustion exhaust gas bypass path, it is possible to control the flow rate of the combustion air entering the incinerator at the set flow rate and suppress fluctuations in furnace pressure. Accordingly, the structure of the facility can be simplified and the combustion state can also be kept constant.

Description of drawings

FIG. 1 is a schematic block diagram showing the configuration of a pressurized flow incinerator facility according to an embodiment of the present invention.

Fig. 2 is a graph showing the relationship between the combustion air flow rate and the furnace internal pressure.

FIG. 3 is an enlarged view of the graph of the range indicated by symbol a in FIG. 2 .

Fig. 4 is a graph showing the relationship between the furnace internal pressure and the amount of combustion air when the opening degree of the regulator valve is changed.

FIG. 5 is a diagram for explaining the control of the valve opening degree control device.

Fig. 6 is a diagram for explaining the control of the valve opening degree control device.

FIG. 7 is a diagram showing an example of a control rule stored in a storage unit.

Fig. 8 is a flow chart illustrating the operation of the pressurized flow incinerator facility.

FIG. 9 is a diagram illustrating a valve opening degree.

FIG. 10 is a diagram illustrating another control rule.

The reference signs are explained as follows:

1 Pressurized flow incinerator equipment

10 Pressurized Flow Furnace

11 sludge

12 Furnace pressure gauge

13 Air Preheater

14 dust collector

15 booster

15a turbo

15b Compressor

16 Combustion air flow meter

17, 18 regulating valve

19 Valve opening control device

191 Flow Control Department

192 Pressure Control Department

193 Storage Department

194 Regulating valve control department

Detailed ways

Hereinafter, a pressurized flow incinerator system according to one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic block diagram showing the configuration of a pressurized flow incinerator facility 1 according to an embodiment of the present invention.

In the pressurized fluidized incinerator facility 1 , the pressurized fluidized furnace 10 incinerates a material to be processed that is introduced from the outside by a feeder or the like. The sludge 11 is an example of a to-be-processed object, For example, it is combustible waste produced|generated in a sewage treatment plant, an excrement treatment plant, etc. The object to be processed is not limited to sludge, and may be an object to be processed containing combustible substances such as food waste and woody biomass.

The furnace pressure gauge 12 measures the pressure in the pressurized flow furnace 10 .

The air preheater 13 preheats the combustion air supplied into the pressurized flow furnace 10 by exchanging heat between the combustion air from the supercharger 15 and the exhaust gas discharged from the pressurized flow furnace 10 .

The dust collector 14 collects dust and the like in the exhaust gas discharged from the air preheater 13 .

The supercharger 15 includes a turbine 15a and a compressor 15b that rotates with the rotation of the turbine 15a. The combustion exhaust gas discharged from the pressurized flow furnace 10 is supplied to the turbine 15a after passing through the air preheater 13 and the dust collector 14, and is used for driving the turbine 15a. The compressor 15b starts to rotate along with the rotation of the turbine 15a, thereby generating compressed air. Part of the compressed air generated by the supercharger 15 is supplied to the pressurized fluid furnace 10 as combustion air after passing through the supply path 22 and being heated by the air preheater 13 . Part of the combustion air in the pressurized flow furnace 10 is supplied to the pressurized flow furnace 10 as combustion air, purge air, etc. of an auxiliary fuel combustion device (not shown) provided in the pressurized flow furnace 10 through the supply path 21 .

In addition, the exhaust gas passing through the turbine 15a from the dust collector 14 passes through the supply path 23 through a white smoke prevention heat exchanger (not shown) and an exhaust gas treatment tower installed in the rear stage, and is thereby subjected to predetermined treatment and discharged to the outside.

In addition, a combustion exhaust gas flow path connected to the combustion exhaust gas supply side of the turbine 15a and a combustion exhaust gas flow path connected to the combustion exhaust gas discharge side of the turbine 15a are connected, and a combustion exhaust gas bypass flow path (path 24) bypassing the turbine 15a is provided.

The combustion air flowmeter 16 measures the flow rate of combustion air supplied from the supercharger 15 to the pressurized flow furnace 10 and the auxiliary fuel combustion device. The flow rate measured here is the total value supplied to the pressurized flow furnace 10 and the auxiliary fuel combustion device. The combustion air flowmeter 16 may be installed on the supply path 21 and the supply path 22 respectively, and the respective measurement results may be totaled to measure the flow rate of the combustion air supplied to the pressurized flow furnace 10 .

The regulating valve 17 is provided on the combustion exhaust gas bypass flow path (path 24 ), and adjusts the flow rate of the exhaust gas bypassing the supercharger 15 . The regulating valve 17 can change the opening degree according to the control amount from the valve opening degree control device 19 , thereby being able to change the flow rate according to the control amount.

The regulating valve 18 is provided on a path 25 that bypasses the turbine 15a by connecting the combustion exhaust gas flow path connected to the combustion exhaust gas supply side of the turbine 15a and the combustion exhaust gas flow path connected to the combustion exhaust gas discharge side of the turbine 15a, and is used for bypassing the booster. The flow rate of the waste gas from the compressor 15 is adjusted. The regulating valve 17 and the regulating valve 18 are respectively arranged in parallel with respect to the turbine 15a. The regulating valve 18 is opened or closed according to an instruction from the valve opening degree control device 19, and when opened, the valve opening degree is constant.

The regulator valve control unit 194 controls the opening and closing and opening degrees of the regulator valve 17 and the regulator valve 18 based on the control rules stored in the storage unit 193 .

The flow rate control unit 191 calculates the difference between the combustion air flow rate measured by the combustion air flow meter 16 and the flow rate set value previously stored in the storage area provided in the pressurized fluid furnace 10, and The control amount of the on-off regulator valve is calculated from the calculated difference.

The pressure control unit 192 calculates the difference between the pressure measurement value, which is the result of the pressure in the pressurized flow furnace 10 measured by the furnace pressure gauge 12, and the pressure setting value stored in advance in a storage area provided in itself, and uses the calculated Calculate the control amount of opening and closing the regulating valve by the difference.

The pressure control unit 192 sequentially imports pressure measurement values from the furnace pressure gauge 12 for each preset measurement cycle, temporarily stores the pressure measurement values measured within a predetermined time (for example, 5 seconds), and calculates the stored pressure. The average value of the measured values is calculated, and the average value of the calculated pressure measured values is stored as the pressure set value. The pressure control unit 192 updates the pressure set value every constant time. The measurement cycle is much shorter than the predetermined time for calculating the average value of the pressure measurement values.

When the difference between the combustion air flow rate and the set flow rate is outside the predetermined range, the regulating valve control unit 194 controls the regulating valve 17 or both the regulating valve 17 and the regulating valve 18 according to the control amount calculated by the flow control unit 191 , when the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, the regulating valve control unit 194 controls the control valve 17 or Both the regulating valve 17 and the regulating valve 18 are controlled.

By controlling the regulator valve 17 while keeping the valve opening of the regulator valve 18 constant, the amount of combustion exhaust gas supplied to the turbine 15a can be previously controlled within a predetermined range when the amount of combustion exhaust gas is large, so that it can be used easily. The range of the opening degree of the regulating valve 17 is controlled.

The storage unit 193 stores control rules.

Fig. 2 is a graph showing the relationship between the combustion air flow rate and the furnace internal pressure. The vertical axis represents the pressure inside the furnace, and the horizontal axis represents the combustion air flow rate.

This FIG. 2 shows the operating characteristics (static characteristics) of opening and closing the control valve 17 (or both of the control valve 17 and the control valve 18) during operation in the pressurized flow incinerator facility 1 of FIG. 1 . And the operating characteristics (static characteristics) of the combustion air flow rate and the furnace pressure after a sufficient time. In this way, the combustion air flow rate and the furnace internal pressure are uniformly determined in a state where the operating state of the pressurized flow incinerator facility 1 is stabilized after a constant time has elapsed. For example, there is the following proportional relationship: if the regulating valve 17 is controlled in the closing direction (decreasing the opening degree), the pressure in the furnace will increase while the combustion air flow rate increases; By controlling the regulating valve 17, the combustion air flow rate is reduced and at the same time the pressure in the furnace is also reduced. In addition, when the valve opening degree of the regulating valve 17 is 40%, for example, the combustion air flow rate and the furnace internal pressure are stabilized at the values indicated by the points shown in the symbol a on the graph.

However, when the control valve 17 is controlled in the opening direction or the closing direction, the fuel air flow rate corresponding to the opening degree and the pressure in the furnace do not change immediately, and the state becomes stable after sufficient time has elapsed after the control valve 17 is controlled. In the case of , the above-mentioned fuel air flow rate and furnace internal pressure are stabilized at the values shown at any point on the line of the graph shown in this figure.

FIG. 3 is an enlarged view of the graph of the range indicated by symbol a in FIG. 2 . The vertical axis represents the pressure in the furnace, and the horizontal axis represents the elapsed time.

This FIG. 3 shows the following relationship, that is, in the pressurized flow incinerator facility 1 of FIG. 1 , the pressure in the furnace when the valve opening of the regulating valve 17 (or both the regulating valve 17 and the regulating valve 18 ) is constant during operation. relationship with elapsed time.

The sludge 11 injected into the pressurized fluid furnace 10 is input in a constant amount, but the properties of the sludge 11 are not necessarily homogeneous and may be uneven. Therefore, even if the sludge 11 is controlled to The amount of input within is constant, and in fact, it cannot be evenly input. Therefore, at a certain moment, lumps may be thrown in or the sludge 11 may be thrown in a state in which gas generated during fermentation has entered. The pressure in the furnace may fluctuate due to the fermentation gas contained in the sludge 11 .

Such fluctuations in the input amount of the sludge 11 and fluctuations in properties tend to occur once to multiple times within a certain period (several seconds to tens of seconds).

In this way, since the input amount and properties of the sludge 11 fluctuate instantaneously, in fact, the pressure in the furnace fluctuates periodically (for example, 5 seconds to 15 seconds, etc.) due to the influence of uneven combustion of the sludge 11 (symbol a) . In this case, although the pressure in the furnace fluctuates periodically, the average value of the pressure in the furnace is substantially constant (symbol b). When the furnace pressure in the pressurized flow furnace 10 fluctuates, the state of each part of the pressurized flow incinerator facility 1 also fluctuates, so the furnace pressure is desirably kept as constant as possible.

FIG. 4 is a graph showing the relationship between the furnace internal pressure and the combustion air flow rate when the opening degree of the regulator valve 17 is changed.

In this figure, when the opening of the regulating valve 17 is increased to a certain value in a short period of time (for example, 3 seconds) and restored (symbol a), the pressure in the furnace fluctuates sharply and decreases during the period of increasing opening. (Symbol b), when the opening is restored, it fluctuates sharply and the pressure in the furnace is restored ((Symbol c) (short empty time)). At this time, the combustion air flow rate basically does not change ((symbol d), (long waste time). When the opening of the regulating valve 17 is reduced and restored in a short time (for example, 3 seconds) (symbol e), when the opening During the period when the opening degree decreases, the pressure in the furnace fluctuates sharply and increases (symbol f). When the opening degree recovers, the pressure in the furnace fluctuates sharply and restores ((symbol g), (short empty time)). At this time, the combustion air flow rate is basically no Change ((symbol h), (long empty time)).

On the other hand, when the valve 17 is adjusted to increase the opening to a certain value within a constant time (for example, 30 seconds) and restore it (symbol i), during the period when the opening becomes the increased value, the pressure in the furnace Its variation becomes smaller after a sharp decrease (symbols j, k).

At this time, the combustion air flow does not change within a constant time after the opening of the regulating valve 17 starts to increase (symbol m, dead time), then slowly decreases (symbol n) and stabilizes at a certain value (symbol o). In addition, when the opening of the regulating valve 17 is restored, the combustion air flow does not change within the constant time (symbol p, waste time), and then the opening of the regulating valve 17 returns to the value before the increase (symbol q), and then becomes be stable (symbol r).

Here, the time constant in which the furnace internal pressure fluctuates when the opening degree of the regulator valve 17 is increased or decreased is smaller than the time constant in which the combustion air flow rate fluctuates. That is, the response of the furnace pressure when the opening degree of the regulator valve 17 is increased or decreased is faster than the response of the combustion air flow rate.

In this way, based on the characteristics of the combustion air volume and furnace pressure when the control valve 17 is opened and closed for a short period of time, when the opening of the control valve 17 is changed for a short period of time, the combustion air flow rate can be changed without changing the furnace pressure. The internal pressure changes. In addition, when the time for changing the opening degree of the regulator valve 17 is sufficiently long, both the furnace internal pressure and the combustion air flow rate can be changed. Here, the principle of expressing this dynamic characteristic is related to the device structure. That is, since a large inertial force (inertia) acts on the supercharger 15 rotating at a high speed, when the opening degree of the regulator valve 17 is changed, there is a time delay until the rotational speed of the supercharger 15 is changed. A delay is created before the amount of combustion air changes with a change in rotational speed.

In addition, as shown in FIG. 1 , the pressurized flow incinerator facility 1 is constituted in an annular structure in which the combustion air compressed by the supercharger 15 flows into the pressurized flow furnace 10 and is discharged from the pressurized flow furnace 10 . The exhaust gas drives a turbine of the supercharger 15 , and combustion air is fed by a compressor 15 b coaxially connected to the turbine 15 a of the supercharger 15 . Moreover, since the volume of the air preheater 13, the pressurized flow furnace 10, and the dust collector 14 constituting the pressurized flow incinerator equipment 1 are large, the pressurized flow incinerator equipment 1 also serves as a storage unit for compressed combustion air, It functions as an air slot for exhaust gas. Therefore, the pressurized flow incinerator facility 1 has a structure in which the combustion air flow rate and the exhaust gas flow rate are not easily changed when the combustion air flow rate and the exhaust gas flow rate are stable, but this is one of the reasons why the rate of change of the combustion air amount is slow.

On the other hand, the pressurized flow furnace 10 side of the regulating valve 17 has a value slightly lower than the pressure in the furnace (the pressure in the furnace - the pressure loss of the equipment and the piping), and the outlet side of the regulating valve 17 is approximately atmospheric pressure. The characteristic that the pressure in the pressurized flow furnace 10 changes with a quick response when the opening degree of the regulating valve 17 is changed.

In the existing pressurized flow incinerator equipment, the multiple paths provided as the supply path for supplying air to the supercharger 15 or the supply path for supplying air from the flow blower that introduces external air and the path for exhaust gas are provided. Each control valve is controlled. However, in the present embodiment, by utilizing the above-mentioned characteristics of the pressurized flow incinerator facility 1, the regulating valves provided on the paths at a plurality of places are not controlled, but only the regulating valves provided on the combustion exhaust gas bypass paths are controlled. The flow rate of the exhaust gas flowing to the turbine 15 a side of the supercharger 15 is adjusted by controlling the valves (regulator valve 17 , regulator valve 18 ).

Next, the function of the valve opening degree control device 19 of the above-mentioned pressurized flow incinerator facility 1 will be described.

When the valve opening control device 19 controls the opening of a regulating valve 17, the difference between the combustion air flow and the furnace internal pressure response characteristics shown in Figure 4 is used to make the combustion air flow consistent with the target flow and simultaneously suppress the Control of short-period fluctuations in furnace pressure caused by mud combustion.

5 and 6 are diagrams illustrating control of the valve opening degree control device 19 .

The combustion air flow rate has an appropriate value obtained from the amount of sludge charged into the pressurized flow furnace 10, the amount of auxiliary fuel used, and the characteristics of the facility. The valve opening control device 19 sets this appropriate value as a target value (combustion air flow rate SV value), and prioritizes the current combustion air flow rate (combustion air flow rate PV value) from the combustion air flow meter 16 over pressure control. Approaching the control of combustion air flow SV value. In consideration of the delay in the response of the controlled object, the combustion air flow rate is controlled with a control period longer than that of the furnace internal pressure. That is, when the combustion air flow rate PV value is not within the predetermined range based on the combustion air flow rate SV value (fig. Control is performed so that the combustion air flow rate PV value approaches the combustion air flow rate SV value (symbol a in FIG. 6 ). Here, from the viewpoint of combustion efficiency, it is preferable that the combustion air flow rate is neither too much nor too small compared to the target value.

When the combustion air flow PV value exists within a predetermined range based on the combustion air flow SV value ((symbol c in Figure 5), the combustion air flow PV value ≈ the combustion air flow SV value), due to the fluctuation of the furnace pressure is suppressed, thereby calculating the moving average of the closest current value of the furnace pressure (furnace pressure PV value), using the average as the target value (furnace pressure SV value), and making the furnace pressure PV value close to the furnace Control of the internal pressure SV value (symbol b in Figure 6). This control is performed with a control period shorter than that of the combustion air flow rate in consideration of the response speed of the controlled object.

In this way, the valve opening degree control device 19 controls the regulator valve 17 with a relatively long control period, so that the combustion air flow rate PV value approaches within a predetermined value based on the combustion air flow rate SV value. When the combustion air flow rate PV value is within a predetermined value based on the combustion air flow rate SV value, the valve opening degree control device 19 controls the regulator valve 17 with a short control cycle to bring the furnace pressure close to the target value. Thereby, the pressure in the furnace can be changed without greatly changing the amount of combustion air.

FIG. 7 is a diagram showing an example of a control rule stored in the storage unit 193 .

The control rule is information corresponding to the deviation of the fuel air flow, the deviation of the pressure in the furnace, and the addition and subtraction of the opening of the regulating valve.

The combustion air flow deviation refers to the difference between the combustion air flow PV value and the combustion air flow SV value. Here, the plus or minus value of the opening degree of the regulating valve corresponds to the deviation of the combustion air flow. For example, when the combustion air flow deviation is outside the predetermined range and the deviation is "+" ((combustion air flow PV value - combustion air flow SV value) > 0), the greater the value (absolute value) of the deviation, the The greater the opening degree changes in the opening direction, the plus and minus values of the regulating valve opening degree are associated.

When the combustion air flow deviation is outside the predetermined range and the deviation is "-" ((combustion air flow PV value - combustion air flow SV value) < 0), the greater the value (absolute value) of the deviation, the greater the opening The increase and decrease values of the opening degree of the regulating valve that change more in the closing direction are correlated.

When the combustion air flow deviation is within a predetermined range (for example, combustion air flow PV value≈combustion air flow SV value), information indicating that the furnace pressure deviation is referred to and controlled according to the furnace pressure deviation is associated.

The furnace pressure deviation refers to the difference between the PV value of the furnace pressure and the SV value of the furnace pressure. Here, the plus or minus value of the opening of the regulating valve corresponds to the pressure deviation in the furnace. For example, when the furnace pressure deviation is outside the predetermined range and the deviation is "+" ((furnace pressure PV value - furnace pressure SV value) > 0), the greater the value (absolute value) of the deviation, the The greater the opening degree changes in the opening direction, the plus and minus values of the regulating valve opening degree are associated.

When the deviation of the pressure in the furnace is outside the predetermined range and the deviation is "-" ((PV value of pressure in the furnace - SV value of pressure in the furnace)<0), the greater the value (absolute value) of the deviation, the greater the opening The plus or minus value of the opening degree of the regulating valve that changes greatly in the closing direction is corresponded.

When the pressure deviation in the furnace is within a predetermined range (for example, the PV value of the furnace pressure ≈ the SV value of the furnace pressure), the plus or minus value of the regulating valve opening for maintaining the valve opening is correspondingly matched.

The control valve opening plus/minus value is a value indicating a control amount for controlling the opening of the control valve that adjusts the bypass amount of the exhaust gas from the supercharger 15 . In the present embodiment, the addition and subtraction value of the opening degree of the regulating valve is a value indicating the control amount relative to the current opening degree of the regulating valve 17, and represents the degree of opening in the opening direction and the degree of closing in the closing direction relative to the current opening degree. The value of any one of the opening degree of the direction close and the maintenance of the opening degree. Values indicating the degree of opening in the opening direction are, for example, values of "+2.0", "+1.0", "+0.8", and "+0.5". The value indicating the degree of opening to close in the closing direction is, for example, values of "-0.5", "-0.8", "-1.0", and "-2.0". In addition, the value indicating the maintenance of the current degree of opening of the regulator valve is "0.0". The units of these values are expressed by setting the opening degree when the regulator valve 17 is fully open to 100%, and the opening degree when the regulator valve 17 is fully closed to be 0%. For example, when the current valve opening degree of the regulating valve 17 is 50% and the regulating valve opening degree is "+1.0", it means that the current valve opening degree is increased by 1%, and it means that the valve opening degree becomes 51%. Mode control regulating valve 17. Similarly, when the current valve opening degree of the regulating valve 17 is 60% and the regulating valve opening degree is "-1.0", it means that the current valve opening degree is reduced by 1%, and it means that the valve opening degree becomes 59%. Control the regulating valve 17. In addition, when the current valve opening degree of the regulating valve 17 is 53% and the regulating valve opening degree is "0.0", it means that the current valve opening degree, that is, 53% is maintained.

The greater the deviation, the greater the value of the adjustment valve opening plus or minus in the control rule, and the greater the deviation, the greater the increment.

A method using a correction coefficient corresponding to the valve opening is also used in the calculation process for obtaining the degree of opening of the regulator valve to be the control output.

Since the change of the valve opening of most control valves is not proportional to the change of flow rate, for example, in the case of 50% or 10% of the valve opening, the valve opening changes with the addition and subtraction value of each control valve +1.0 , the result is that there is a large difference in the flow rate change of the combustion exhaust gas due to the change of the opening degree. Therefore, use the correction coefficient corresponding to the valve opening. For example, when the valve opening is 50%, the correction coefficient is 1.0. When the opening direction output is +1.0, the control output is 50(%)+1.0×1.0 (correction coefficient) . When the valve opening is 10%, the correction coefficient is 2.5, and when the opening direction output is +1.0, the control output is 10(%)+1.0×2.5 (correction coefficient). By performing the calculation of the correction coefficient used in this way, the flow rate can be changed to the same degree with respect to the change width of the control output of +1.0 regardless of the value of the valve opening.

In addition, in this control rule, the pressure control unit 192 calculates the average value of the furnace internal pressure for a certain constant period (5 seconds or the like) nearest to it, and sets the average value as the furnace internal pressure SV value (target value). Control is performed so that the average value (furnace pressure SV value (target value)) approaches the current value, that is, the deviation becomes zero. As described above, the opening is opened so that the greater the deviation between the average value and the target value is, the greater the opening is, and when the deviation is small, the opening is controlled to be smaller than the opening when the deviation is large. .

In addition, in addition to the values for increasing, decreasing, and maintaining the opening degree, the control valve opening degree addition and subtraction value also includes information indicating the control cycle. As the control period, there are "control period: long" and "control period: short". "Control period: long" indicates that the control period is longer than "control period: short". In addition, the control period indicates a time interval for performing calculation and referring to a combustion air flow rate deviation or a furnace pressure deviation. Here, the following control rule is determined, that is, the control cycle is long when the regulating valve 17 is controlled according to the plus or minus value of the valve opening corresponding to the deviation of the combustion air flow rate, and the control period is long when the plus or minus value of the valve opening corresponding to the deviation of the furnace pressure is used. And the control period when controlling the regulating valve 17 is short.

Next, the operation of the above-mentioned pressurized flow incinerator facility 1 will be described.

FIG. 8 is a flowchart illustrating the operation of the pressurized flow incinerator facility 1 .

First, when the pressurized flow incinerator facility 1 is operating and the control of the valve opening control device 19 is started, the flow control unit 191 uses the combustion air flow PV value measured by the combustion air flow meter 16 and the predetermined combustion air flow SV value to The combustion air flow rate deviation is calculated to determine whether or not the combustion air flow rate deviation is within a predetermined range (step S1).

When the determination result is within the predetermined combustion air flow rate deviation range (step S1-YES), the throttle valve control unit 194 refers to the determination result of the pressure control unit 192 (step S2). That is, when the difference between the furnace pressure PV value measured by the furnace pressure gauge 12 and the average value of the furnace pressure PV value (furnace pressure SV value) is greater than a predetermined first reference value (for example, -3kPa ) is small (step S3), the regulating valve control unit 194 obtains the control value (valve opening-0.8) that makes the valve opening close to the direction of the valve opening (step S4), and according to the control value, the valve of the current regulating valve 17 Based on the opening degrees, the addition is performed, thereby controlling the regulating valve 17 in the closing direction.

When the pressure deviation in the furnace calculated by the pressure control unit 192 is above the first reference value and smaller than the predetermined second reference value (for example, -1kPa) (step S5), the regulating valve control unit 194 obtains the valve opening to The control value in the closing direction (valve opening-0.5) (step S6) is added to the current valve opening of the control valve 17 based on the control value, thereby controlling the control valve 17 in the closing direction.

When the pressure deviation in the furnace calculated by the pressure control unit 192 is greater than or equal to a predetermined second reference value and smaller than a predetermined third reference value (for example, 1 kPa) (step S7), the regulating valve control unit 194 determines that the furnace pressure is If the deviation is within a predetermined range, a control value for maintaining the valve opening (valve opening 0.0) is obtained (step S8 ), and control is performed to maintain the current valve opening of the regulator valve 17 based on the control value.

When the pressure deviation in the furnace calculated by the pressure control unit 192 is above the third reference value and less than the predetermined fourth reference value (for example, 3kPa) (step S9), the regulating valve control unit 194 obtains the valve opening to open. The directional control value (valve opening + 0.5) (step S10 ) is added to the current valve opening of the regulator valve 17 based on the control value, thereby controlling the regulator valve 17 in the opening direction.

When the pressure deviation in the furnace calculated by the pressure control unit 192 is above the fourth reference value (step S11), the regulating valve control unit 194 obtains a control value (valve opening + 0.8) to make the valve opening in the opening direction (step S12 ) is added to the current valve opening of the regulating valve 17 based on the control value, thereby controlling the regulating valve 17 in the opening direction.

When the regulating valve control unit 194 performs control by obtaining control values such as steps S4, S6, S8, S10, and S12, set the control cycle timer corresponding to "control cycle: short" in the control cycle timer that counts the control cycle. The cycle is controlled (for example, any time in 0.5 to 1 second) (step S13 ) and counted. Then, when the count result reaches the control cycle, the throttle valve control unit 194 proceeds to step S1 to determine whether the combustion air flow rate deviation is within a predetermined range.

In step S1, when the combustion air flow rate deviation is outside the predetermined range (step S1-NO), the throttle valve control unit 194 refers to the determination result of the flow rate control unit 191 (step S20). That is, when the calculated result of the difference between the combustion air flow PV value measured by the combustion air flow meter 16 and the combustion air flow SV value is smaller than a predetermined fifth reference value (for example, -40Nm ³ /h) (step S21) , the regulating valve control part 194 obtains the control value (valve opening-2.0) that makes the valve opening toward the closing direction (step S22), and adds the valve opening on the basis of the current regulating valve 17 according to the control value, The regulating valve 17 is thereby controlled in the closing direction.

When the calculated difference between the combustion air flow PV value measured by the combustion air flowmeter 16 and the combustion air flow SV value is above the predetermined fifth reference value and less than the predetermined sixth reference value (for example, ^-20Nm3 /h) (step S23), the regulating valve control unit 194 obtains the control value (valve opening-1.0) that makes the valve opening close to the direction (step S24). The addition is performed on the basis of degrees, thereby controlling the regulating valve 17 in the closing direction.

When the calculated result of the difference between the combustion air flow PV value measured by the combustion air flow meter 16 and the combustion air flow SV value is above the predetermined sixth reference value and less than the predetermined seventh reference value (for example, 20Nm ³ / h) (step S25), the regulating valve control part 194 obtains the control value (valve opening degree 1.0) that makes the valve opening to the opening direction (step S26), and the valve opening degree of the current regulating valve 17 is adjusted according to the control value. Addition is performed on the basis, thereby controlling the regulating valve 17 in the opening direction.

When the calculated result of the difference between the combustion air flow PV value measured by the combustion air flow meter 16 and the combustion air flow SV value is greater than or equal to the predetermined seventh reference value (step S27), the regulator valve control unit 194 acquires The control value in the opening direction (valve opening 2.0) (step S28) is added to the current valve opening of the regulating valve 17 based on the control value, thereby controlling the regulating valve 17 in the opening direction.

When the regulator valve control unit 194 obtains the control values in steps S22, S24, S26, and S28 to perform control, a control period corresponding to "control period: long" is set in the control period timer that counts the control period ( For example, an arbitrary time in 5 to 20 seconds) (step S29 ) to count. Then, when the count result reaches the control cycle, the throttle valve control unit 194 proceeds to step S1 to determine whether the combustion air flow rate deviation is within a predetermined range.

In this way, the throttle valve control unit 194 adds the value of the throttle valve opening increment and subtraction obtained in each control cycle to the current valve opening of the throttle valve 17 and controls it as a new opening output of the throttle valve 17 . In addition, only when the combustion air flow rate PV value ≈ the combustion air flow rate SV value, the control (PIC) that suppresses fluctuations in the furnace pressure works. Target Value Control (FIC).

It should be noted that, in the above-mentioned embodiment, when the current valve opening degree is 100% and the control value for opening the valve opening degree is obtained, the regulator valve control unit 194 maintains the valve opening degree of 100% even if the addition is performed. When the current valve opening is 0% and the control value for closing the valve opening is obtained, control is performed while maintaining the valve opening at 0% even if the addition is performed.

In addition, in the above-mentioned embodiment, in the combustion air flow rate control (during the control process based on steps S20 to S28), the pressure variation is not affected based on the furnace pressure deviation from the furnace pressure gauge 12 and the pressure control unit 192. Monitor the situation where the pressure becomes larger than the assumption and the situation that the pressure does not exceed the set upper limit, and in the event of an abnormality, the operator can be notified of the error.

FIG. 9 is a diagram illustrating a valve opening degree. In the above-described embodiment, the regulator valve control unit 194 adjusts the bypass amount bypassing the supercharger 15 through the regulator valve 17 and the regulator valve 18 . For example, when the target valve opening is A (symbol A) and the target flow rate of exhaust gas is B (symbol B), the regulator valve 18 is opened at an opening of 100% to obtain a constant flow rate (symbol b). By variably controlling the valve opening of the regulator valve 17 to obtain the remaining flow rate (symbol c), the overall target valve opening degree (symbol a) is obtained so as to obtain the target exhaust gas flow rate.

It should be noted that, for example, if the flow rate (symbol B) of the exhaust gas can be obtained by obtaining the target valve opening degree (symbol a) only by the regulating valve 17, only the regulating valve 17 can be controlled.

FIG. 10 is a diagram illustrating another control rule.

In addition, in the above-mentioned embodiment, when the deviation of the combustion air flow rate is outside the predetermined range, the regulator valve control unit 194 controls the regulator valve according to the control amount calculated by the flow rate control unit 191. When within the determined range, the regulator valve is controlled based on the control amount calculated by the pressure control unit 192 . In this way, the throttle valve control unit 194 performs switching control between the control (FIC) corresponding to the flow rate control unit 191 and the control (PIC) corresponding to the pressure control unit 192 according to the deviation in the combustion air flow rate.

However, instead of switching between the control corresponding to the flow rate control unit 191 and the control corresponding to the pressure control unit 192 , both may be controlled. For example, the regulator valve control unit 194 controls the regulator valve based on the control amount obtained by the flow rate control unit 191 and the control amount obtained by the pressure control unit 192 . For example, the control rules shown in FIG. 10 are stored in the storage unit 193 .

The regulating valve control unit 194 obtains the deviation of the combustion air flow rate from the flow control unit 191, and in the case of “more on the + side”, obtains the corresponding plus or minus value of the regulating valve opening “+a3”, and obtains the pressure inside the furnace from the pressure control unit 192. Pressure deviation, in the case of "+ side is the most", obtain the corresponding control valve opening plus and minus value "+b4", so as to become corresponding to the regulating valve opening plus and minus value "+a3" and "+b4" The regulating valve 17 is controlled by means of the valve opening degree. For example, control is performed so that "+b4" is added to "+a3".

In addition, for example, the throttle valve control unit 194 acquires the deviation of the combustion air flow rate from the flow rate control unit 191, and in the case of “minor on the + side”, acquires the corresponding throttle valve opening plus or minus value “+a1”, and obtains the deviation from the pressure control unit 191. 192 Obtain the pressure deviation in the furnace. In the case of "-side slightly more", obtain the corresponding control valve opening plus and minus value "-b2", so as to become the plus and minus value of the regulating valve opening plus and minus "+a1" and The regulating valve 17 is controlled in a manner corresponding to the valve opening degree of "-b2". For example, control is performed so that "-b2" is added to "+a1".

In this way, the regulator valve control unit 194 controls the regulator valve so that the valve opening degree corresponds to both the combustion air flow rate variation and the furnace internal pressure variation.

As described above, by appropriately controlling the amount of combustion air, the running cost of fuel consumption can be suppressed and the CO concentration can be suppressed. That is, the pressurized flow incinerator facility 1 is an incinerator for incinerating sludge 11 , and the amount of air required for combustion varies depending on sludge properties such as the amount of sludge and the content ratio of combustible components. If the amount of combustion air is too small, incomplete combustion will occur, and the impact on the environment such as discharge of unburned gas and CO concentration in exhaust gas will increase. If the amount of combustion air is too large, auxiliary fuel will be consumed unnecessarily for heating. Therefore, although an increase in running cost, a rise in CO concentration, etc. occur, by controlling the combustion air flow rate, it is possible to suppress the running cost of fuel consumption and suppress the CO concentration.

In addition, since the control is performed so as to suppress fluctuations in the furnace pressure as described above, the influence on other controls of the pressurized flow incinerator facility 1 can be suppressed. The pressure in the furnace can be kept within the allowable range of equipment design. For example, even if the sludge is put into the incinerator at a constant flow rate, uneven combustion will occur in the incinerator due to the uneven properties of the sludge (moisture content, calorific value, viscosity, etc.), or the sludge will be thrown into a block. There are cases where the sludge is partially fermented and gas is blown out, and the pressure in the furnace fluctuates due to various reasons. If the pressure in the furnace fluctuates, it also has a great influence on the control of supply of city gas as fuel, and the like. By keeping the pressure in the furnace within the allowable range of the equipment design while suppressing these fluctuations, the influence on the control of each part in the pressurized flow incinerator equipment 1 can be suppressed.

In addition, by recording the program for realizing the function of the valve opening degree control device 19 in FIG. 1 on a computer-readable recording medium, the computer system can read and execute the program recorded in the recording medium to adjust The valve is controlled. It should be noted that the “computer system” mentioned here refers to hardware including OS and peripheral devices.

In addition, in the case of using a "computer system" or a WWW system, the home page provision environment (or display environment) is also included.

In addition, the "computer-readable recording medium" refers to portable media such as flexible disks, magneto-optical disks, ROMs, and CD-ROMs, and storage devices such as hard disks incorporated in computer systems. Furthermore, the "computer-readable recording medium" refers to a server that is used when the program is transmitted via a network such as the Internet, or a communication line such as a telephone line, and a volatile memory (RAM) inside a computer system serving as a client, which is kept constant. The medium of time programs. In addition, the above-mentioned program may realize part of the above-mentioned functions, and further, may be combined with a program recorded in a computer system to realize the above-mentioned functions.

As mentioned above, although embodiment of this invention was described in detail with reference to drawings, the specific structure is not limited to this embodiment, The design etc. of the range which do not deviate from the summary of this invention are included.

It should be noted that "plurality" in the present invention refers to any number of at least two or more.

Industrial availability

The present invention provides a control valve control device for pressurized flow furnace equipment that can simplify the structure of the equipment and suppress the combustion state to be constant.

Claims (10)

1. A control valve control device for pressurized flow furnace equipment, the pressurized flow furnace equipment is equipped with a pressurized flow furnace and a supercharger, and the supercharger includes a combustion exhaust gas discharged from the pressurized flow furnace. a rotating turbine and a compressor rotating with the rotation of the turbine, wherein, The regulating valve control device of the pressurized flow furnace equipment has: a regulator valve provided on a combustion exhaust gas bypass flow path connecting a combustion exhaust gas inlet side and a combustion exhaust gas outlet side of the turbine, and adjusting a bypass amount of exhaust gas from the supercharger; A flow rate control unit that calculates a control for opening and closing the regulator valve based on a difference between a combustion air flow rate that is a result of measuring the amount of combustion air supplied to the pressurized fluid furnace and a preset flow rate setting value. quantity; a pressure control unit, which calculates the control amount for opening and closing the regulating valve based on the difference between the measured pressure value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value; a regulator valve control unit that controls the regulator valve based on the control amount calculated by the flow rate control unit when the difference between the combustion air flow rate and the flow rate set value is out of a predetermined range, and When the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, the combustion air is controlled based on the control amount calculated by the flow control unit and the control amount calculated by the pressure control unit. Said regulating valve. 2. A regulating valve control device for pressurized flow furnace equipment, the pressurized flow furnace equipment is equipped with a pressurized flow furnace and a supercharger, and the supercharger includes a combustion exhaust gas discharged from the pressurized flow furnace. a rotating turbine and a compressor rotating with the rotation of the turbine, wherein, The regulating valve control device of the pressurized flow furnace equipment has: a regulator valve provided on a combustion exhaust gas bypass flow path connecting a combustion exhaust gas inlet side and a combustion exhaust gas outlet side of the turbine, and adjusting a bypass amount of exhaust gas from the supercharger; A flow rate control unit that calculates a control for opening and closing the regulator valve based on a difference between a combustion air flow rate that is a result of measuring the amount of combustion air supplied to the pressurized fluid furnace and a preset flow rate setting value. quantity; a pressure control unit, which calculates the control amount for opening and closing the regulating valve based on the difference between the measured pressure value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value; a regulator valve control unit that controls the regulator valve based on the control amount calculated by the flow rate control unit when the difference between the combustion air flow rate and the flow rate set value is out of a predetermined range, and When the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, the regulator valve is controlled based on the control amount calculated by the pressure control unit. 3. The regulating valve control device of the pressurized flow furnace equipment according to claim 1 or 2, wherein, The pressure setting value is an average value of pressure measurement values within a predetermined time period. 4. The regulating valve control device of the pressurized flow furnace equipment according to claim 1 or 2, wherein, A control cycle for controlling based on the control amount calculated by the pressure control unit is shorter than a control cycle for controlling based on the control amount calculated by the flow rate control unit. 5. The regulating valve control device of the pressurized flow furnace equipment according to claim 1 or 2, wherein, A maximum value of a valve opening at which the regulator valve can be opened based on the control amount calculated by the pressure control unit is smaller than a maximum value of a valve opening at which the regulator valve can be opened based on the control amount calculated by the flow rate control unit. 6. The regulating valve control device of the pressurized flow furnace equipment according to claim 1 or 2, wherein, The regulating valve includes a first bypass valve whose opening degree is predetermined and a second bypass valve whose opening degree is variable, The regulator valve control unit controls the opening degree of the second bypass valve based on the control amount. 7. The regulating valve control device of the pressurized flow furnace equipment according to claim 1, wherein, The control amount is the opening degree of the regulating valve or the control period of the regulating valve. 8. The regulator valve control device for pressurized flow furnace equipment according to claim 4, wherein: A maximum value of a valve opening at which the regulator valve can be opened based on the control amount calculated by the pressure control unit is smaller than a maximum value of a valve opening at which the regulator valve can be opened based on the control amount calculated by the flow rate control unit. 9. A regulating valve control method for pressurized flow furnace equipment, the control valve control method for pressurized flow furnace equipment is the control valve control method in the control valve control device for pressurized flow furnace equipment, the pressurized flow furnace equipment A pressurized flow furnace and a supercharger including a turbine that rotates by combustion exhaust gas discharged from the pressurized flow furnace and a compressor that rotates with the rotation of the turbine are provided, wherein, The regulating valve control method of the pressurized flow furnace equipment includes the following steps: The flow rate control unit calculates the control amount of the on-off regulator valve based on the difference between the combustion air flow rate, which is the result of measuring the combustion air amount supplied to the pressurized fluid furnace, and a preset flow rate setting value. The regulator valve is provided on a combustion exhaust gas bypass flow path connecting the combustion exhaust gas inlet side and the combustion exhaust gas outlet side of the turbine and adjusts the bypass amount of the exhaust gas from the supercharger, The pressure control unit calculates the control amount for opening and closing the regulating valve based on the difference between the pressure measurement value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value, The throttle valve control unit controls the throttle valve based on the control amount calculated by the flow rate control unit when the difference between the combustion air flow rate and the flow rate setting value is outside a predetermined range, and When the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, the adjustment is controlled based on the control amount calculated by the flow control unit and the control amount calculated by the pressure control unit. valve. 10. A regulating valve control method for pressurized flow furnace equipment, the control valve control method for pressurized flow furnace equipment is the control valve control method in the control valve control device for pressurized flow furnace equipment, the pressurized flow furnace equipment A pressurized flow furnace and a supercharger including a turbine that rotates by combustion exhaust gas discharged from the pressurized flow furnace and a compressor that rotates with the rotation of the turbine are provided, wherein, The regulating valve control method of the pressurized flow furnace equipment includes the following steps: The flow rate control unit calculates the control amount of the on-off regulator valve based on the difference between the combustion air flow rate, which is the result of measuring the combustion air amount supplied to the pressurized fluid furnace, and a preset flow rate setting value. The regulator valve is provided on a combustion exhaust gas bypass flow path connecting the combustion exhaust gas inlet side and the combustion exhaust gas outlet side of the turbine and adjusts the bypass amount of the exhaust gas from the supercharger, The pressure control unit calculates the control amount for opening and closing the regulating valve based on the difference between the pressure measurement value after measuring the pressure in the pressurized flow furnace and the preset pressure setting value, The throttle valve control unit controls the throttle valve based on the control amount calculated by the flow rate control unit when the difference between the combustion air flow rate and the flow rate setting value is outside a predetermined range, and When the difference between the combustion air flow rate and the flow rate set value is within a predetermined range, the regulator valve is controlled based on the control amount calculated by the pressure control unit.

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