Sootblower operation process simulation fault diagnosis method and system

Abstract

The embodiment of this specification provides a sootblower operation process simulation fault diagnosis method and system, wherein the method includes: obtaining the sootblower operation time; simulating the entire sootblower operation process according to the sootblower operation time, judging whether there is an abnormal situation that the sootblower back-off time is insufficient, the back-off time is too long, or the sootblower is stuck and overloaded, and outputting a fault signal if the abnormal situation occurs. It can effectively prevent the sootblower from stopping in the middle state due to signal failure, and prevent the sootblower from blowing the pipe wall due to long-term steam intake.

Description

Technical Field

[0001] This document relates to the field of mechanical engineering technology, and in particular to a sootblower operation process simulation fault diagnosis method and system. Background Art

[0002] The soot blowers of a thermal power company are controlled by the DCS system, and the operation of the soot blowers is controlled by the local control cabinet. The DCS system and the local control cabinet transmit the soot blower forward command, soot blower operation, soot blower overload, soot blower forward, and soot blower backward feedback through hard wiring. The DCS system forward command uses a long command signal, which is interlocked and closed after a delay of 108S. The soot blower operation signal uses the normally closed node of the local soot blower retracted stroke switch after the relay is extended. The soot blower overload signal is the action signal of the thermocouple relay in the power circuit. The soot blower forward and backward signals are the soot blower forward and backward contactor pull-in signals in the power circuit. In the DCS system, the soot blower operation signal is used to take the negative signal as the soot blower retracted signal.

[0003] During the normal operation of the sootblower, the DCS issues a forward command, the forward contactor is energized, and the normally closed node of the retracted extension relay is closed. Since the forward and reverse circuits are interlocked, the DCS forward command disappears after 108S, and the forward contactor is de-energized. Since the normally closed node of the retracted position in the reverse circuit is closed, the reverse contactor is energized until the sootblower retracts to its full position, the normally closed node of the retracted extension relay is disconnected, the reverse contactor loses power, and the sootblower operation process is completed.

[0004] Under the existing technology, after a long period of operation, if the sootblower's retraction travel switch or extension relay fails, the sootblower's retraction contactor will not be energized after the forward contactor is energized, and the sootblower will have no retraction process. In addition, the DCS system references the normally closed node of the extension relay, and the DCS system cannot determine whether the sootblower has been retracted. Summary of the invention

[0005] The object of the present invention is to provide a sootblower operation process simulation fault diagnosis method and system, aiming to solve the above-mentioned problems in the prior art.

[0006] The present invention provides a sootblower operation process simulation fault diagnosis method, comprising:

[0007] Get the sootblower running time;

[0008] The whole operation process of the sootblower is simulated according to the sootblower operation time to determine whether there is an abnormal situation that the sootblower retreat time is insufficient, the retreat time is too long, or the sootblower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output.

[0009] The present invention provides a sootblower operation process simulation fault diagnosis system, comprising:

[0010] An acquisition module, used for acquiring the sootblower operation time;

[0011] The simulation unit is used to simulate the entire sootblower operation process according to the sootblower operation time, and determine whether there is an abnormal situation that the sootblower retreat time is insufficient, the retreat time is too long, or the sootblower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output.

[0012] An embodiment of the present invention further provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the steps of the sootblower operation process simulation fault diagnosis method when executed by the processor.

[0013] An embodiment of the present invention further provides a computer-readable storage medium, on which a program for implementing information transmission is stored. When the program is executed by a processor, the steps of the above-mentioned sootblower operation process simulation fault diagnosis method are implemented.

[0014] By adopting the embodiments of the present invention, it is possible to effectively prevent the soot blower from stopping in an intermediate state due to a signal failure, and prevent the soot blower from being damaged by blowing the pipe wall due to long-term steam intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 is a flow chart of a sootblower operation process simulation fault diagnosis method according to an embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the hardware structure of the sootblower operation process simulation fault diagnosis method according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of a sootblower operation process simulation fault diagnosis system according to an embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The embodiment of the present invention simulates the whole operation process of the soot blower. If there is a forward signal, the reverse contactor is not attracted for a long enough time or there is an overload signal, a fault signal is triggered.

[0021] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the following will be combined with the drawings in one or more embodiments of this specification to clearly and completely describe the technical solutions in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this document.

[0022] Method Embodiment

[0023] According to an embodiment of the present invention, a method for simulating fault diagnosis during operation of a sootblower is provided. Figure 1 FIG. 1 is a flow chart of a method for simulating fault diagnosis of a sootblower during operation according to an embodiment of the present invention. Figure 1 As shown, the sootblower operation process simulation fault diagnosis method according to an embodiment of the present invention specifically includes:

[0024] Step 101, obtaining the sootblower operation time; the sootblower operation time specifically includes: the total operation time of the sootblower, the time required for forward movement, and the time required for backward movement.

[0025] Step 102, simulating the entire sootblower operation process according to the sootblower operation time, and determining whether there is an abnormal situation that the sootblower retreat time is insufficient, the retreat time is too long, or the sootblower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output. Step 102 specifically includes:

[0026] The whole operation process of the sootblower is simulated according to the sootblower operation time, and the sootblower forward signal is connected to the R terminal of the RS trigger through the DCS system;

[0027] According to the sootblower operation time, the DCS system connects the RS trigger S terminal after the retreat signal is delayed for an actual time of N seconds;

[0028] According to the sootblower operation time, the DCS system accesses the RS trigger S terminal after the retreat signal has retreated for an actual time of N seconds in advance;

[0029] According to the soot blower operation time, a fault signal is triggered after the RS trigger after the soot blower operation is delayed for M seconds.

[0030] Preferably, N=2, M=5.

[0031] like Figure 2As shown, in one example, the total operation time of the sootblower, the time required for advancing and the time required for reversing are obtained through experiments, and then the sootblower advancing signal is connected to the R end of the RS trigger through the DCS system, and the reversing signal is delayed / advanced to the actual reversing time by 2S and then connected to the S end of the RS trigger. After the RS trigger, the sootblower failure signal is triggered after the sootblower operation time of the whole process is delayed for 5S. At the same time, the sootblower overload or the reversing contactor exceeds the actual reversing time also triggers the sootblower failure signal.

[0032] In summary, the embodiment of the present invention first obtains the total operation time of the soot blower, the time required for forward movement and the time required for backward movement through experiments, and then logically simulates the entire operation process of the soot blower, and outputs a fault signal after judging the soot blower's insufficient backward movement time or excessive backward movement time, and the soot blower's jamming and overload signal, effectively preventing the soot blower from stopping in an intermediate state due to a signal failure, and the soot blower from blowing damage to the pipe wall due to a long time of steam intake. The effect of the embodiment of the present invention is obvious, and the fault state of the soot blower can be basically and comprehensively judged.

[0033] System Example

[0034] According to an embodiment of the present invention, a sootblower operation process simulation fault diagnosis system is provided. Figure 3 Schematic diagram of a sootblower operation process simulation fault diagnosis system according to an embodiment of the present invention. Figure 3 As shown, the sootblower operation process simulation fault diagnosis system according to an embodiment of the present invention specifically includes:

[0035] The acquisition module 30 is used to acquire the sootblower operation time; the sootblower operation time specifically includes: the total operation time of the sootblower, the time required for moving forward, and the time required for moving backward.

[0036] The simulation unit 32 is used to simulate the entire operation process of the soot blower according to the soot blower operation time, and determine whether there is an abnormal situation that the soot blower retreat time is insufficient, the retreat time is too long, or the soot blower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output. The simulation unit is specifically used to:

[0037] The whole operation process of the sootblower is simulated according to the sootblower operation time, and the sootblower forward signal is connected to the R terminal of the RS trigger through the DCS system;

[0038] According to the sootblower operation time, the DCS system connects the RS trigger S terminal after the retreat signal is delayed for an actual time of N seconds;

[0039] According to the sootblower operation time, the DCS system accesses the RS trigger S terminal after the retreat signal has retreated for an actual time of N seconds in advance;

[0040] According to the soot blower operation time, a fault signal is triggered after the RS trigger after the soot blower operation is delayed for M seconds.

[0041] Preferably, N=2, M=5.

[0042] The embodiment of the present invention is a system embodiment corresponding to the above-mentioned method embodiment. The specific operations of each module can be understood by referring to the description of the method embodiment, which will not be repeated here.

[0043] Device Example 1

[0044] An embodiment of the present invention provides an electronic device, such as Figure 4 As shown, it includes: a memory 40, a processor 42, and a computer program stored in the memory 40 and executable on the processor 42. When the computer program is executed by the processor 42, the steps described in the method embodiment are implemented.

[0045] Device Example 2

[0046] An embodiment of the present invention provides a computer-readable storage medium, on which a program for implementing information transmission is stored. When the program is executed by the processor 42, the steps described in the method embodiment are implemented.

[0047] The computer-readable storage medium in this embodiment includes, but is not limited to, ROM, RAM, magnetic disk or optical disk, etc.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sootblower operation process simulation fault diagnosis method, characterized in that: include: Get the sootblower running time; The sootblower operation time specifically includes: the total operation time of the sootblower, the time required for forward movement, and the time required for backward movement; According to the sootblower operation time, the whole sootblower operation process is simulated to determine whether there is an abnormal situation that the sootblower retreat time is insufficient, the retreat time is too long, or the sootblower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output; specifically, it includes: The whole operation process of the sootblower is simulated according to the sootblower operation time, and the sootblower forward signal is connected to the R terminal of the RS trigger through the DCS system; According to the sootblower operation time, the DCS system connects the RS trigger S terminal after the retreat signal is delayed for an actual time of N seconds; According to the sootblower operation time, the DCS system accesses the RS trigger S terminal after the retreat signal has retreated for an actual time of N seconds in advance; According to the soot blower operation time, a fault signal is triggered after the RS trigger after the soot blower operation is delayed for M seconds.

2. The method according to claim 1, characterized in that: N=2, M=5.

3. A sootblower operation process simulation fault diagnosis system, characterized in that: include: An acquisition module, used for acquiring the sootblower operation time; The sootblower operation time specifically includes: the total operation time of the sootblower, the time required for forward movement, and the time required for backward movement; The simulation unit is used to simulate the whole operation process of the soot blower according to the operation time of the soot blower, and judge whether there is an abnormal situation that the soot blower retreat time is not enough, the retreat time is too long, or the soot blower is stuck and overloaded. If the abnormal situation occurs, a fault signal is output; specifically used for: The whole operation process of the sootblower is simulated according to the sootblower operation time, and the sootblower forward signal is connected to the R terminal of the RS trigger through the DCS system; According to the sootblower operation time, the DCS system connects the RS trigger S terminal after the retreat signal is delayed for an actual time of N seconds; According to the sootblower operation time, the DCS system accesses the RS trigger S terminal after the retreat signal has retreated for an actual time of N seconds in advance; According to the soot blower operation time, a fault signal is triggered after the RS trigger after the soot blower operation is delayed for M seconds.

4. The system according to claim 3, characterized in that N=2, M=5.

5. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the sootblower operation process simulation fault diagnosis method according to any one of claims 1 to 2 are implemented.

6. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an implementation program for information transmission, and when the program is executed by a processor, the steps of the sootblower operation process simulation fault diagnosis method according to any one of claims 1 to 2 are implemented.

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