JP2001084024A - Drainage operation monitor controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize efficient operation as facility of drainage by constituting it of a single controller having operation monitor-controlling functions of both of a drain pump and a gas turbine driving machine so as to reduce the number of elements to improve reliability. SOLUTION: The operation monitor-controlling function 2 of a drain pump 5 and the operation monitor-controlling function 3 of a gas turbine driving machine 6 are constituted in a single drainage operation monitor controller 1. Then, while constantly monitoring the power characteristic of the machine 6 by the function 2 of the pump 5, a siphon is formed in the shortest time by the operation characteristic of the pump 5 fluctuating depending on the state of an internal water level or an external water level, to execute power control of the machine 6 making draining operation possible. Further, when a flow-in quantity exceeds an allowable water level and at the time of the a sudden variation of the water level, the power control of the machine 6 is executed by the operation characteristic of the pump 5. The number of parts and the number of circuits are reduced by these and safety in terms of water control is secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a drain pump, a gas turbine drive for generating power for driving the drain pump, a transmission for transmitting power generated by the gas turbine drive to the drain pump, a discharge valve, and the like. The operation monitoring and control device for drainage pumps and the operation monitoring and control function for gas turbine drive units are composed of auxiliary equipment such as ventilation fans and drainage equipment operation monitoring and control devices composed of internal water meters and external water meters. Have
The present invention relates to an operation monitoring and control device for a drainage facility having a function of controlling an output power and a rotation speed of a gas turbine according to a required power and a required rotation speed that vary according to an operation state of a drainage pump.

[0002]

2. Description of the Related Art There is no gas turbine drive having a function for driving a drainage pump of a drainage equipment, and therefore, a gas turbine drive which does not limit the driven equipment is used. ing. Therefore, the control device of the gas turbine drive device is not a control device dedicated to the drain pump of the drain facility. This control device performs operation monitoring control only for the gas turbine driver, performs start / stop control, status / failure monitoring control of the gas turbine driver, fetches a start / stop command from outside, and outputs a status / failure signal. Is a control device having a function of outputting to the outside.

On the other hand, the control device of the drainage facility has a function of performing start / stop control and state / failure monitoring control together with other devices by using the gas turbine driving device as one control object. The operation monitoring control of the machine is performed through the control device of the gas turbine drive machine.

Further, since the rotation speed of the gas turbine driving machine can be easily changed, the output or rotation of the gas turbine driving machine in the drainage system follows the change in the required power or the rotation speed in the operating state of the drainage pump. The number is changing.

[0005]

However, the configuration of these control devices is a control device for a gas turbine driving device and a control device for a drainage facility including the control device. The control device for the gas turbine driving device is a drainage facility. Only the minimum control signal input / output as the control device of the gas turbine driving machine is prepared without being aware of the operation monitoring control contents of the control device.

For this reason, the same monitoring and control function is configured between the control device of the gas turbine driving device and the control device of the drainage facility, and the reliability is impaired due to the presence of a large number of control devices. In addition, the number of parts and the number of wirings are increasing.

In addition, since each control device performs arithmetic control of power and rotation speed, each control device has a margin in consideration of arithmetic accuracy and signal accuracy. As a result, the function required of the drainage facility, that is, high reliability, is reduced, and the operation efficiency of the drainage facility is reduced in that more drainage is possible.

An object of the present invention is to limit the gas turbine drive to the drive of a drainage pump and to have both the control function of the gas turbine drive and the control function of the drainage equipment, thereby reducing the configuration and improving the reliability. Another object of the present invention is to provide a control device that controls the output power and the number of revolutions of the gas turbine in accordance with the required power and the required number of revolutions that vary depending on the operation state of the drainage pump, and that performs efficient operation as a drainage facility.

[0009]

In order to achieve the above object, there is provided a drainage system comprising a gas turbine drive unit, a drainage pump driven by the gas turbine, and other equipment. In the invention described in the above,
The means is constituted by one control device having both the operation monitoring control function of the drain pump and the operation monitoring control function of the gas turbine driving device.

According to the third aspect of the present invention, the operation monitoring control of the gas turbine drive and the operation monitoring control of the drainage pump are performed within the same control device obtained by the first and second aspects of the invention. Means to do it.

That is, the drainage equipment operation monitoring and control apparatus of the present invention has both the control function of the gas turbine drive unit and the control function of the drainage equipment, so that the configuration can be reduced and the reliability can be improved. By controlling the output power and the number of revolutions of the gas turbine in accordance with the required power and the required number of revolutions that fluctuate depending on the operation state of the drainage pump, efficient operation as a drainage facility can be performed.

[0012]

An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic diagram showing a facility configuration of a drainage facility and an operation monitoring control device of the drainage facility.

As shown in FIG. 1, the drainage equipment includes a drainage pump 5, a gas turbine drive 6 for generating power for driving the drainage pump 6, a transmission 7 for transmitting the power generated by the gas turbine drive to the drainage pump. , An auxiliary device such as a discharge valve and a ventilation fan, an internal water meter and an external water meter, and a drainage facility operation monitoring and control device 1 for monitoring and controlling the operation of these devices. Further, the functional configuration in the drainage equipment operation monitoring and control device 1 includes an operation monitoring and control function of a drainage pump 2, an operation monitoring and control function 3 of a gas turbine driving device, and an operation monitoring and control function of other devices (such as auxiliary machines). 4.

FIG. 2 is a schematic diagram showing the configuration of a conventional drainage facility and an operation monitoring control device for the drainage facility. Although the configuration of the drainage equipment is the same as that of FIG. 1, the operation monitoring control device of the equipment is a drainage equipment operation monitoring control device including an operation monitoring control function 2 of a drainage pump and an operation monitoring control function 4 of auxiliary equipment and the like. 1
And an operation monitoring and control device 3a for the gas turbine drive. Operation monitoring control device 3 for gas turbine drive
“a” has only the operation monitoring control function 3 of the gas turbine driving machine, and is an operation monitoring control device independent of the drainage plant operation monitoring control device 1. Each control device controls a different function. However, when viewed from a component level, the control devices are configured by similar components such as a sequencer (PLC) and an auxiliary relay.

Assuming that the reliability of the drainage facility operation monitoring and control device 1 in the configuration of FIG. 2 is α and the reliability of the operation monitoring and control device 3a of the gas turbine driving machine is β, each control device is constituted by similar parts. The reliability of both is α ≒
β.

In FIG. 1, an operation monitoring and control function 2 for a drain pump and an operation monitoring and control function 3 for a gas turbine driving machine are shown.
Are constructed in one drainage facility operation monitoring and control device 1, it can be said that the reliability is improved as compared with the conventional configuration in which two independent operation monitoring and control devices are used.

That is, since the drainage facility cannot function due to the failure of any one of the drainage facility operation monitoring and control apparatus 1 and the gas turbine drive operation monitoring and control apparatus 3a, the reliability of the drainage facility is conventionally α + β (≒ α) = 2α, α
(≒ β).

Further, one drainage equipment operation monitoring and control device 1
By configuring the operation monitoring and control function 2 of the drainage pump and the operation monitoring and control function 3 of the gas turbine drive unit in the inside, there is no equipment and circuit for signal exchange, so the components and circuit configuration are more reliable than before. Since the number of components and the number of circuits are reduced at the same time as the performance is improved, the same functions as those of the related art are configured at a low price.

Further, the operation monitoring control function 2 of the drainage pump
And the operation monitoring and control function 3 of the gas turbine drive unit in one drainage facility operation monitoring and control unit 1, and the power characteristic of the gas turbine drive unit is constantly monitored by the operation monitoring and control function 2 of the drainage pump. The power of the gas turbine drive is controlled so that a siphon can be formed in the shortest time and the drainage operation can be performed based on the operation characteristics of the drainage pump that fluctuates depending on the state of the water level and the outside water level. In addition, even when there is an inflow exceeding the permissible flooding level or sudden fluctuations in the water level, the power control of the gas turbine driving machine is performed by the operation characteristics of the drainage pump. Through these measures, safety in flood control required for drainage facilities is ensured and efficient operation is performed.

[0020]

As described above, according to the present invention,
By limiting the gas turbine drive to the drive of the drainage pump and having both the control function of the gas turbine drive and the control function of the drainage equipment, the control function and the configuration of the control device are reduced, and the reliability is improved. By controlling the output power and the rotation speed of the gas turbine in accordance with the required power and the required rotation speed that fluctuate depending on the operating state of the gas turbine, a control device that performs efficient operation as a drainage facility can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a drainage facility operation monitoring control device and a drainage facility according to the present invention.

FIG. 2 is a schematic diagram showing a configuration of a conventional drainage facility operation monitoring and control device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Drainage equipment operation monitoring and control device, 2 ... Drainage pump operation monitoring and control function, 3, 3a ... Operation monitoring and control function of gas turbine drive, 4 ... Auxiliary equipment operation monitoring and control function, 5 ... Drainage pump, 6 ... gas turbine drive, 7 ... transmission.

Claims (3)

[Claims] 1. A drain pump, a gas turbine drive for generating power for driving the drain pump, a transmission for transmitting the power generated by the gas turbine drive to the drain pump, auxiliary equipment such as a discharge valve and a ventilation fan, And an operation monitoring and control device for drainage equipment composed of measuring means of an internal water meter and an external water meter, the operation of the drainage equipment is controlled by a control device having an operation monitoring and control function of a drainage pump and an operation monitoring and control function of a gas turbine driving device. A drainage equipment operation monitoring and control device characterized by having high reliability by performing monitoring and control. 2. A drain pump, a gas turbine drive for generating power for driving the drain pump, a transmission for transmitting the power generated by the gas turbine drive to the drain pump, and auxiliary equipment such as a discharge valve and a ventilation fan; And an operation monitoring and control device for drainage equipment composed of measuring means of an internal water meter and an external water meter, the operation of the drainage equipment is controlled by a control device having an operation monitoring and control function of a drainage pump and an operation monitoring and control function of a gas turbine driving device. A drainage facility operation monitoring and control device characterized in that the control and control are performed to reduce the number of components and circuits in the control device. 3. A drain pump, a gas turbine drive for generating power for driving the drain pump, a transmission for transmitting the power generated by the gas turbine drive to the drain pump, auxiliary equipment such as a discharge valve and a ventilation fan, And an operation monitoring and control device for drainage equipment composed of measuring means of an internal water meter and an external water meter, wherein the control device having an operation monitoring and control function of a drainage pump and an operation monitoring and control function of a gas turbine drive unit operates the drainage equipment By performing monitoring control and controlling the output power and rotation speed of the gas turbine according to the required power and required rotation speed that fluctuate according to the operating state of the drainage pump, efficient operation as drainage equipment is performed. Drainage equipment operation monitoring and control device.