JPS61273138A - Automatic inspector for emergency generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an automatic inspection device for an emergency power generator, and in particular, an automatic inspection device for automatically inspecting the product deterioration of the jettance control circuit of an engine. It is.

[Conventional technology]

Figure 4.5 is similar to the diagram showing the sequence control of a conventional gas turbine engine shown, for example, on page 16 of the July 1982 issue of Densetsu Kogyo. ) is the power outage signal, (8) is the automatic start/stop control circuit, (4) is the turbine control contact, (5) is the generator main body, (6) is the turbine side control valve coil, and (7) is the turbine side analog variable. The detection sensor, (8) is the turbine side operating contact, (9) is the turbine body, and (9) is the generator. Further, (21) is a characteristic curve of the rotational speed, which shows that many controls such as the starting valve and the spark plug are performed according to the rotational speed of the turbine as time passes.

Next, the operation will be explained. If the main power supply (not shown) is interrupted in the above configuration, the power outage signal (2) will be connected and the automatic start control of the automatic start/stop control circuit (8) will operate, operating the auxiliary lubricating oil pump, starting the turbine, etc. The control contact (4) is brought into contact, and the turbine side control valve (6) such as a pump or valve is energized and operated. Thereafter, in order to perform the control shown in FIG. 5, the control circuit contacts (4) are brought into contact according to each rotational speed. This allows the turbine side control valve (coil) to
(6) operates, and in combination with the analog quantity (7) from the turbine side and contact operation as necessary, the rotations of the engine (9) and generator increase.

When the main power is restored, the power outage signal (2) is disconnected, the stop control circuit (8) operates, and a stop command is issued after a certain period of time.
One of the generators (one of the
) is made to stop.

As described above, in the above configuration, diesel startup and
Compared to stopping, there are many items to be controlled for each rotation speed, making it more complicated.

[Problem that the invention seeks to solve]

Conventional devices are configured as described above, and if, for example, a startup fails in the sequence control circuit, it is difficult to determine the cause, such as whether a startup command was issued at that time or whether the ignition plug did not operate. Especially when there is a contact failure with low reproducibility, it is difficult for even a professional engineer to understand the cause.Also, the biggest cause of startup failure is poor deterioration of the relay in the sequence control circuit. In the case of gas turbines, the number of parts has been significantly reduced compared to diesels, but the number of control circuit relays has increased, which has become a bottleneck in expanding the application of emergency gas turbine generators.This invention solves the problems mentioned above. [Means for Solving the Problems] This invention aims to obtain a device that can automatically detect deterioration of products of engine sequence control circuits at an early stage. Such an automatic inspection device for an emergency power generator includes a contact output that controls the engine side, an input device that inputs these to the inspection device, an arithmetic control device that performs prescribed logical judgment and arithmetic processing based on the input data, and It is equipped with a storage device, an output device for outputting processed contents, and a display device.

[Effect]

The automatic inspection device for emergency power generation equipment according to the present invention utilizes the precision and high-speed processing functions of a microcomputer to check the operating status of the start and stop of the power generation equipment and the contact output of sequence control, and detect abnormalities in the control circuit at an early stage. 0 that can be detected [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
In the figure, the same reference numerals as in Figure 4 indicate the same elements (0) and (2) other than these.
is the operation stop command contact, and the symbol α is the control circuit contact that becomes the stop operation.

Figure 2 is a block diagram showing the detailed configuration of the automatic inspection device α-to, including the operation stop command contact (2), control circuit contact QB),
A turbine control contact (4), an input device (21) that converts these signals into processable signals, and a storage device that stores programs for executing logical judgments and calculations, input data, calculation result data, etc.ff! Fourth, this storage device-
an arithmetic control unit 128) that takes in data from an input device according to a built-in program, executes logical judgments and operations, and outputs the results to a storage device and externally; It is composed of an output device that converts a signal indicating the result of the control device into a signal to be driven by a display device) and an auxiliary relay for recording the result.

The operation of the automatic inspection device shown in Fig. 2 will be explained below with reference to the flowchart in Fig. 6.0 First, when a gas turbine start command is issued (steps a and b), the starting air valve control contact is brought into contact. After measuring the required time, check whether this contact is in contact (steps c, d). If not, output the error details and end the process (step 1).

Hereinafter, check the operating status of the following turbine control contacts using the same method.

When the gas turbine stop command is issued (step e), a certain period of time is measured, and after a certain period of time (step f), check to see if the contact is disconnected during the stop operation (step g). If it remains connected, restarting cannot be performed, so it is abnormal. Output the contents and exit (Step 1
). If it is normal, the remaining contacts are checked in the same manner, and if all are normal, it is output as normal (step h), and the process ends (step j).

In the above embodiments, an emergency gas turbine power generation device has been described, but regular use, diesel power generation devices, etc. may also be used, and the same effects as in the above embodiments can be obtained.

Furthermore, if the above range is further combined with a device that automatically records and outputs the operation time of each contact output, it is effective to investigate the cause of an abnormality and clarify the state of deterioration.0 [Effects of the Invention] As described above. According to this invention, since the operational status of the engine's sequence control contact output is checked using the precision and high-speed arithmetic processing function of the microcomputer, deterioration of the control circuit product, which is the cause of most startup failures, can be detected at an early stage. In particular, it has the effect of greatly improving the start-up reliability of gas turbine generators, which are ideal for emergency use but have more control parts than diesel generators, and whose application has been slow to expand.

[Brief explanation of drawings]

Fig. 1 is a control system diagram according to an embodiment of the present invention, Fig. 2 is a configuration diagram of an automatic inspection device of the present invention, Fig. 5 is a flowchart showing the inspection processing flow of this device, and Fig. 4 is a conventional A control system diagram showing the device, FIG. 5 is a control characteristic diagram of FIG. 4. (4) is the contact output that controls the engine, (2) is the operation stop command contact, QB) is the control circuit contact, Scream) is the input device,
(The figure shows a storage device, ■ shows an arithmetic control circuit, and the example shows an output device.)
is a display device, and tg) is an auxiliary relay. In addition, in the figures, the same reference numerals indicate the same or equivalent parts 0 Figure 1 Figure 3

Claims (2)

[Claims] (1) An input device that inputs the operation stop command contact, control circuit contact, and turbine control contact that control the emergency power generator and converts these signals into processable signals, and an input device for performing logical judgments and calculations. A storage device that stores programs, input data, calculation result data, etc.; and a storage device that takes in data from the input device according to the program built in this storage device, executes logical judgments and calculations, and stores the results in the storage device. The system is equipped with an arithmetic control device that outputs the output to the outside as well as an output device, an output device that converts a signal indicating the result of the arithmetic control device into a display signal and outputs it, and a display device, and inspects product deterioration of the sequence control circuit. An automatic inspection device for emergency power generation equipment. (2) An automatic inspection device for an emergency power generator according to claim 1, which automatically records and outputs the operating time of each of the contact outputs.