JPS62159736A - Operation monitoring device for gas turbine generating equipment for emergency - Google Patents

Abstract

PURPOSE:To reliably report a worker that a gas turbine comes to an overhaul timing and to improve maintenance properties, by a method wherein data necessary to computation of an overhaul timing is inputted to automatically compute and decide the overhaul timing, which is outputted. CONSTITUTION:A titled generating equipment starts a gas turbine 11 and drives a generator 13 according to an instruction from a control panel 1 during outage. An operating state is monitored by an integrating hour meter 4, the number 7 of starting revolutions, and a wattmeter 8, and the combustion intake air temperature of a gas turbine is monitored by a temperature converter 3 and a thermometer 2. In this case, an operation monitoring device 30 is provided for inputting the data of the temperature converter 3, a power converter 5, and a generating equipment-under-operation display contact 6 and monitoring operation. The monitoring device integrates an operation hour in each given intake air temperature region prevailing when a load is increased to higher than a given value, integrates the number of startings, and decides an overhaul timing based on each integrated value to actuate a display device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an operation monitoring device for emergency gas turbine power generation equipment.

[Conventional technology]

Figure 5 shows, for example, the literature (Densetsu Kogyo, July 1982 issue, 4).
This is a summary of the related items of the conventional gas turbine measurement items shown in (see page 8.49).
1) is a control panel, (2) is a thermometer, (8) is a temperature converter, (4) is an integrated hour meter, (7) il'l: start-up counter,
(8) is a power meter. The cry is a gas turbine generator.
(11) is a gas turbine as a driving machine, which drives a generator (13) via a reduction gear (Makoto). 0 is a gas turbine combustion intake temperature detection device.

Next, the operation will be explained. When the power supply is cut off, the Shigas Turbine α is activated by a start command from the control panel (1), and it drives the generator through the speed reducer (2) to generate voltage. Power meter (8), cumulative hour meter (4), and start-up counter (
7), as well as a temperature converter (8) and a thermometer (2).
) monitors the gas turbine combustion intake temperature.

[Problem that the invention seeks to solve]

Conventional operation monitoring devices are configured as described above, so in order to determine when it is time to overhaul a gas turbine, the number of startups, intake air temperature, load amount, and operating time must be recorded moment by moment and calculated using a formula. However, in reality, it is very difficult to calculate quantitatively because it is troublesome, but it is important for emergency power generation equipment because it can shorten the life of the gas turbine and reduce the reliability of the power generation equipment by delaying the overhaul time. There was a problem.

This invention was made in order to solve the above-mentioned problems, and the purpose is to obtain a device that automatically calculates the overhaul time and reliably performs the overhaul when the overhaul time arrives. shall be.

[Failure to solve the problem]

The operation monitoring device according to the present invention is provided with a device that takes in data necessary for calculating an overhaul time, a device that automatically determines the calculation, and a device that outputs the calculation result.

[Effect]

The operation monitoring device according to the present invention works to constantly calculate and monitor the overhaul time of the gas turbine through the operation monitoring flow, so that when the overhaul time is reached, the operator can be reliably informed, and quantitatively Maintenance work can be performed based on data.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, symbols (1) to (4) and (7 to (
141 is the same as the conventional one shown in FIG. (6
) is the power converter, (6) is the power generator operating display contact, (
2)) is an operation monitoring device that takes in data from a temperature converter (3), a power converter (6), and a display contact (6) and monitors the operation.

Figure 4 is a block diagram showing details of the operation monitoring device, +6
Reference numeral 11 denotes an input device (62) that inputs data from the temperature converter (8), power converter (5), and display contact (6) into the arithmetic and control unit (μs) and converts it into a signal that can be processed by logical judgments and calculations.
1 is a storage device that stores programs for executing logical judgments and calculations, input data, calculation results, and other data; 2) is an input device (from 61 to data, performs logical judgments and calculations, and stores the results in storage devices (rings and output devices).
Arithmetic control device that outputs to 6 @ (open is the arithmetic power device, :6
5+ and +661 are output devices (display devices and auxiliary relays that display and transmit the calculation results according to the output contents of Tsukuda.

FIG. 3 shows a flowchart of the operation monitoring process, and the operation will be described below with reference to this diagram. When the gas turbine is in operation (U1), the number of startups (C1) is counted f421
L, decoy that reads intake air temperature and power. When the load is above a certain value, it is checked whether the intake air temperature exceeds 30℃, and depending on the result, it is lower than 30℃ (t,), respectively.
Accumulate the dazzling side of the operating time exceeding 30℃ (t,') M, [Io Simultaneously record the maximum intake air temperature TAMAX (for reference at the time of overhaul).If the electric power is below a certain value, the operating time is not integrated.Thus, during operation of the gas turbine, the flowchart from (6)) to l'lal is repeated, and when the gas turbine is stopped, the value of υ is calculated according to the equations (6) and 50; Next, check if K is 1 or more βIll, If it is 1 or more, print out "Overhaul required" 521 L, press the confirmation button (58!) to calculate the total time (t work), (12), the number of startups (C) , return the maximum intake air temperature TA MAX to zero (Island).

Next, the background of calculation formula (51) will be explained with reference to FIG.

Characteristic curves (A), FB+, and (C1) are the output curves for disaster prevention, emergency use, and regular use, respectively.As the intake air temperature increases, the air density decreases, and if the turbine inlet temperature is kept at a constant V, the gas turbine output will be Decrease.Turbine population m
W has a limit due to the overhaul life of the gas turbine, and therefore the maximum output value decreases in inverse proportion to the rise in intake air temperature. (Al, (B), (cl) in Figure 2
The lower right part of the line corresponds to this, and on this line it can be considered that the turbine inlet temperature is constant (exhaust gas temperature is constant), that is, the overhaul life is constant.

The upper limit of the output is usually determined by the mechanical strength, such as the torque limit of the shaft system. In the figure, for example, the overhaul life in the case of disaster prevention rating (Al) is 100 hours.

Emergency rating (B), regular rating (C1 is 1000 each)
h.

It is 10000h. Further, when the load of the power generator is constant, the turbine inlet temperature, exhaust gas temperature, and intake air temperature have a certain correlation, so the overhaul life can be calculated using any one of them. Additionally, when the number of activations exceeds a certain value, an overhaul from a different angle is required. The flowchart shown in Figure 3 summarizes the above into a calculation formula, but it may also be used for regular power generation equipment other than emergency use, and the turbine inlet temperature, which has a certain correlation, instead of the combustion intake temperature. Alternatively, the same effect can be obtained by calculating using the exhaust gas temperature. Furthermore, if a flowchart is provided that outputs the temperature value, number of times, and time of excess when the turbine inlet temperature exceeds the specified maximum temperature, it can be used as reference data during overhaul.

〔Effect of the invention〕

As explained above, according to the present invention, a device that takes in the data necessary for calculating the overhaul time, a device that automatically determines the calculation, and a device that outputs the calculation result are provided, so that the overhaul time can be reliably determined. Data can be sent to the operator and maintenance work can be performed based on the data.

This makes it possible to extend the life of the equipment and improve its reliability.

[Brief explanation of drawings]

FIG. 1 is a system diagram of an operation monitoring device according to an embodiment of the present invention, FIG. 2 is a gas turbine output performance curve diagram, FIG. 3 is an operation monitoring flowchart, and FIG. 4 is a detailed diagram of the operation monitoring device. The block diagram in FIG. 5 is a system diagram of a conventional operation monitoring device. α4): Detection device ■): Operation monitoring device (6D:
Input device: Storage device (6sr: Arithmetic and control unit): Output device.
Or it shows the sound part. , Robbery - 3KSE4:rx Procedural amendment (voluntary) April 1986 Office 0 days

Claims (3)

[Claims] (1) A detection device for the combustion intake air temperature of the emergency power generation equipment,
The engine is equipped with an input device that inputs detected data to the monitoring device, an arithmetic control device and storage device that performs prescribed logical judgments and arithmetic processing based on the input data, and an output device that outputs the processed contents. An operation monitoring device for emergency gas turbine power generation equipment, which calculates and outputs an overhaul timing for an emergency gas turbine power generation facility. (2) The operation monitoring device for an emergency gas turbine power generation facility according to claim 1, further comprising a turbine inlet temperature or turbine exhaust gas detection device instead of the combustion intake air temperature. (3) The emergency gas turbine power generation equipment according to claim 1 or 2, which outputs the temperature value, the number of times, and the exceeding time when the turbine inlet temperature exceeds the specified maximum temperature. Driving monitoring device.