JPS60194232A - Automatic control device for burner - Google Patents

Abstract

PURPOSE:To permit to detect abnormality in its early stage by a method wherein existence of the abnormality of all operating terminals, which can be related with the abnormality, is detected individually in any condition before, during or upon finishing the operation of the burner. CONSTITUTION:The device is provided with a permissible condition abnormality diagnostic means 10, inputting permissible conditions 12 over 1-m and the condition signal 18 of auxiliary machines before the operations thereof and detecting which permissible condition is non- approval, and an operating terminal individual abnormality diagnostic means 30, diciding whether an operation commanding signal for the operating terminal 13 of complements of 1-n and the condition signal outputted from respective operating terminals are approved in respective predetermined conditions or not in order to diagnose the abnormality of each operating terminal individually. Further, a finishing condition abnormality diagnostic means 40, taking all of the condition signals outputted from the operating terminal of complement upon finishing one series of operation in and detecting the abnormality of which operating terminal is the cause of non-approval in case the finishing condition is not approved by an operation comparing with an operation finishing condition 41, a transmitting means 31, transmitting the diagnostic results of respective diagnostic means 10, 30, 40 to the other unit, and an indicating means 32, indicating the diagnostic results, are provided also in the device.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an automatic burner control device, and in particular, it is equipped with various abnormality diagnosis functions of the operating end at each operation stage, thereby making it possible to quickly respond to abnormalities. This invention relates to a burner automatic control device.

(1) Background of the Invention A conventional burner automatic control device will be explained with reference to FIG.

The burner automatic control device, which takes in the status signals of multiple operating terminals, performs logical operation processing on them, and outputs the results to each operating terminal for control, is organized for each system as shown in Figure 1. An operation command 11 that controls a plurality of operating terminals, a permission condition 12 that sets conditions 1 to m (where 1m is an arbitrary number) under which the system can be operated, and auxiliary machines 1 to 1 to be controlled. A plurality of operating terminals 13 that operate n (where n is an arbitrary number), an operation completion 14 that outputs a status signal when all operating terminals complete their operations, and an abnormality in a series of sequential operations of auxiliary equipment. It consists of a collective abnormality diagnosis means 20 for detecting the abnormality, and each element is connected by an AND circuit 15. In addition, batch abnormality diagnosis means 2
0 consists of a timer J7 that measures a preset time and a negation circuit 16 that inverts the completion status signal from the operation completion 14. By connecting these retimer 17 and negation circuit 16 by an AND circuit 15, It is determined that the operation is completed within a predetermined time.

In such a burner automatic control device, when the operation command 11 is transmitted with all of the permission conditions 1 to m satisfied, the first operation end is first driven based on the logical product with the permission conditions. , up to the n-th operating end 13 are sequentially driven.

Furthermore, it is confirmed that all the operating terminals 1-n have operated, and the operation is completed 14. At this time, the timer 17 counts a predetermined time from when the first operation command is issued to the completion of a series of sequential operations, and the batch abnormality diagnosis means 20 determines whether the result is within the set time. If so, the operation was considered complete, and when the set time was exceeded, an abnormality was diagnosed at the operating end.

However, with this conventional method, if a sequential operation is not started even though an operation command has been issued, it is difficult to detect whether the abnormality is due to failure of any of the permission conditions 1 to m. Ta. In addition, since the abnormality diagnosis of all the operating terminals 1 to n is performed at once by the batch abnormality diagnosis means 20, the diagnostic level is to diagnose whether any operating terminal in the system is abnormal or not. All I could do was For this reason, there is a problem in that the operator is unable to quickly respond to a failure, and it takes a great deal of time to discover the abnormal operation end after the occurrence of an abnormality and to restore the operation.

[Purpose of the invention]

An object of the present invention is to provide automatic burner control that enables early detection of abnormalities by making it possible to individually detect the presence or absence of abnormalities in all target operation ends when the burner is in any state before operation, during operation, or after completion of operation. We are in the process of providing equipment.

[Summary of the invention]

The main point of the present invention is that in the state before burner operation, the status signal of the auxiliary equipment before operation is compared with preset permission conditions to determine which permission condition is abnormal; ,
Taking in operation command signals for a plurality of operating ends and status signals from each operating end, determining whether or not both signals are established in a predetermined state, diagnosing an abnormality for each operating end, and further, In the operation completion state, by comparing and calculating the status signal from the operating end and the burner operation completion state condition,
The purpose of the present invention is to diagnose which operation end has failed due to an abnormality, to output and transmit each diagnosis result to other devices, and to display or notify these results.

[Embodiments of the invention]

An embodiment of the present invention will be explained with reference to FIG.

In the embodiment of the present invention, the permission conditions 12 to m and the status signal 18 of the auxiliary equipment before operation are input, and based on the comparison result of these signals, it is detected which permission condition is not satisfied. Abnormality diagnosis means 10 and a plurality of operation ends 13 1 to n
An operation for diagnosing an abnormality in each operating end by inputting an operation command signal for each operating end and a status signal output from each operating end, and determining whether or not both signals are established in a predetermined state. When the end individual abnormality diagnosis means 30 is in a series of operation completion states, it captures all the status signals output from a plurality of operation ends, compares these with the operation completion state condition 41, and if the completion condition is not satisfied, Completion condition abnormality diagnosis means 40 for detecting which operating end is the cause of the abnormality, transmission means 31 for transmitting the diagnosis results from each diagnosis means 10, 30 and 40 to other devices, and displaying the diagnosis results. and a display means 32.

When the operation command 11 is transmitted with all of the permission conditions 12 of 1 to m satisfied, the operation command is first transmitted to the first operation end by logical product with the permission conditions, and then the operation command is transmitted to the first operation end. On the condition that the second operating end is driven, the operating end transmits an operation command to the second operating end. In this way, the n-th operating end 13 is sequentially driven, and 1 to n
Operation completion 1 indicates that all operation ends 13 have completed operation.
Judging by 4. In this control system, the status signal 18 of the auxiliary equipment before operation is input to the permission condition abnormality diagnosis means 10, and by comparison with the permission condition 12 set in advance, it is diagnosed which permission condition is not satisfied, and the abnormality is caused. The operation commands input to each operating end 13 and the status signals output from each operating end are input into the operating end individual abnormality diagnosis means 30, and the diagnosing means 30 determines whether or not the operating end is operating normally. It is detected for each operating end, and when an abnormality occurs, it is determined which operating end is abnormal. Next, the status signals from a plurality of operating terminals are respectively inputted, and the completion condition abnormality diagnosis means 40 compares and calculates the operation completion status condition 41 and the status signal, which have been conditioned in advance. Detects whether the cause is an abnormality on the control end. Furthermore, by providing a transmission means 31 for transmitting the abnormality diagnosis signals from these abnormality diagnosis means 1.0, 30, and 40 to other devices and a display means 32 for displaying the diagnosis results, more detailed abnormality detection and abnormality locations can be performed. By making visual confirmation possible, it becomes possible to speed up response in the event of an abnormality and shorten failure recovery time.

The embodiment of the present invention is a power generation plan (- boiler control device,
Applicable to all other sequence control devices.

〔Effect of the invention〕

According to the present invention, it is easy to start operation, and the abnormal location and type of abnormality can be diagnosed for each operating end, and the results can be displayed to take prompt action, both during operation and after operation completion. I can do it.

[Brief explanation of the drawing]

Figure 1 is a block diagram of a conventional burner automatic control device;
The figure is a block diagram of an automatic burner control device according to the present invention. 10...Permission condition abnormality diagnosis means, 11...Operation command. 12...Permission condition, 13...Operation end, 14...Operation completion, Step 5...AND circuit, 16...Negation circuit,
17...Timer, 18...Status signal of auxiliary equipment before operation, 20...Batch abnormality diagnosis means, 30...Operation terminal individual abnormality diagnosis means, 31...Transmission means, 32... Display means, 40... Completion condition abnormality diagnosis means, 41... Operation completion condition. Agent Patent Attorney Akio Takahashi [ ]] [

Claims (1)

[Claims] 1. The auxiliary equipment around the burner is used as the operating terminal, and the status signals of the operating terminals are inputted, and the burner is ignited or extinguished based on predetermined burner ignition or extinguishing permission conditions and ignition/extinguishing operation commands. In an automatic burner control device that sequentially performs control by performing logical arithmetic processing and outputting the results to each of the operating terminals. a permission condition abnormality diagnosis means that captures a status signal of the auxiliary equipment before operation and performs a comparison calculation with the fire extinguishing permission condition to detect which condition is not satisfied; and an operation command signal for the plurality of operation terminals and each of the operation terminals. operating end individual abnormality diagnosis means for individually determining for each of the plurality of operating ends whether or not the plurality of operating ends have operated normally based on a status signal; Perform a comparison operation with the state condition. Completion condition abnormality diagnosis means for diagnosing which operation terminal abnormality caused the completion state condition to not be satisfied; output/transmission means for outputting the diagnosis results of each of the above-mentioned abnormality diagnosis means to other devices; and displaying the diagnosis results individually. or a means for notifying.