Fault diagnosis method and system for sea water pump for marine engine and electronic equipment

Abstract

The invention provides a fault diagnosis method and system for a sea water pump for a marine engine and electronic equipment, and relates to the technical field of sea water pumps, and the fault diagnosis method comprises the following steps: S1, obtaining the rotating speed of the engine and the water pressure of a water outlet of the sea water pump; s2, judging whether the rotating speed of the engine is in a stable state; s3, if the rotating speed of the engine is stable, whether the water pressure of a water outlet of the seawater pump is larger than a preset pressure value or not is judged; and S4, if the water pressure of the water outlet of the sea water pump is larger than the preset pressure value, the number of faults is accumulated and recorded, and the steps from S1 to S3 are repeated. The working state of the sea water pump can be accurately recognized, when the sea water pump fails, the accuracy and reliability of fault judgment can be greatly improved, meanwhile, misjudgment of the failure of the sea water pump is avoided as much as possible, and the maintenance cost and time are reduced. And the reliability of other parts needing to be cooled of the engine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seawater pumps, and in particular to a fault diagnosis method, electronic equipment and storage medium for a seawater pump for a marine engine. Background Art

[0002] Seawater pumps for marine engines are generally large in size and heavy in weight. In addition, the harsh operating environment (seawater, highly corrosive) results in a short maintenance cycle and high maintenance costs. If the seawater pump fails during use, it will cause some engine parts to overheat, affecting the life of other parts.

[0003] If the seawater pump fails, it is difficult to accurately locate the cause of the failure, which increases the troubleshooting time. In addition, such parts are prone to misjudgment, increasing maintenance costs and time. If the seawater pump fails, the water temperature inside the engine will be high, affecting the reliability of other engine parts that need to be cooled. Summary of the invention

[0004] The present application provides a fault diagnosis method, electronic equipment and storage medium for a seawater pump for a marine engine, so as to at least solve the technical problems existing in the related art.

[0005] According to one aspect of an embodiment of the present application, a fault diagnosis method for a seawater pump for a marine engine is provided, comprising:

[0006] S1 obtains the engine speed and the water pressure at the seawater pump outlet;

[0007] S2 determines whether the engine speed is in a stable state;

[0008] S3: if the engine speed is stable, determining whether the water pressure at the seawater pump outlet is greater than a preset pressure value;

[0009] S4: If the water pressure at the outlet of the seawater pump is greater than the preset pressure value, the number of failures is accumulated and recorded, and the steps S1-S3 are repeated.

[0010] As an optional embodiment, the method further includes: if the accumulated number of failures is greater than a preset number, outputting a signal for indicating the failure of the seawater pump.

[0011] As an optional embodiment, the determination of whether the engine speed is in a stable state includes: obtaining the engine speed change rate; determining whether the engine speed change rate is greater than a preset speed change rate; if the engine speed change rate is greater than the preset speed change rate, the engine speed is not in a stable state.

[0012] As an optional embodiment, if the engine speed change rate is less than a preset speed change rate, the engine speed is in a stable state.

[0013] As an optional embodiment, the seawater pump includes a water pressure sensor arranged at the water outlet; and obtaining the engine speed and the water pressure at the seawater pump outlet includes: determining a water pressure signal value obtained by the water pressure sensor.

[0014] As an optional embodiment, it further includes: if the accumulated number of failures within a preset time period is greater than a preset number, outputting a signal for indicating the failure of the seawater pump.

[0015] As an optional embodiment, if the cumulative number of failures is less than a preset number when the preset time is reached, the cumulative number of failures is cleared to 0.

[0016] According to another aspect of the present application, a fault diagnosis system for a seawater pump for a marine engine is provided, comprising: an acquisition module for acquiring the engine speed and the water pressure at the seawater pump outlet; a state judgment module for judging whether the engine speed is in a stable state; a water pressure judgment module for judging whether the water pressure at the seawater pump outlet is greater than a preset pressure value when the engine speed is stable; and a recording module for accumulating and recording the number of faults when the water pressure at the seawater pump outlet is greater than the preset pressure value.

[0017] According to another aspect of the present application, there is provided an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus, and the memory is used to store a computer program; and the processor is used to execute the steps of a fault diagnosis method for a seawater pump for a marine engine by running the computer program stored in the memory.

[0018] According to another aspect of the present application, a computer-readable storage medium is provided, characterized in that a computer program is stored in the storage medium, wherein the computer program is configured to execute the steps of the fault diagnosis method for a seawater pump for a marine engine when running.

[0019] In an embodiment of the present application, a fault diagnosis method for a seawater pump for a marine engine is provided, the fault diagnosis method comprising: obtaining the engine speed and the water pressure at the seawater pump outlet; judging whether the engine speed is in a stable state; if the engine speed is stable, judging whether the water pressure at the seawater pump outlet is greater than a preset pressure value; if the water pressure at the seawater pump outlet is greater than the preset pressure value, then accumulating and recording the number of faults, and repeating the above steps. The working state of the seawater pump can be accurately identified, and when the seawater pump fails, it can be judged immediately to prevent the engine from overheating, and can effectively reduce the situation where the seawater pump failure is misjudged due to high water temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] In order to more clearly illustrate the embodiments of the present invention 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, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a flow chart of a fault diagnosis method for a seawater pump for a marine engine provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] Seawater pumps for marine engines are generally large in size and heavy in weight. In addition, the harsh operating environment (seawater, highly corrosive) results in a short maintenance cycle and high maintenance costs. If the seawater pump fails during use, it will cause some engine parts to overheat, affecting the life of other parts.

[0026] Therefore, if Figure 1 As shown, in an embodiment of the present application, a fault diagnosis method for a seawater pump for a marine engine is provided, and the fault diagnosis method comprises:

[0027] S1 obtains the engine speed and the water pressure at the seawater pump outlet;

[0028] S2 determines whether the engine speed is in a stable state;

[0029] S3: if the engine speed is stable, determining whether the water pressure at the seawater pump outlet is greater than a preset pressure value;

[0030] S4: If the water pressure at the outlet of the seawater pump is greater than the preset pressure value, the number of failures is accumulated and recorded, and the steps S1-S3 are repeated.

[0031] It can accurately identify the working status of the seawater pump. When the seawater pump fails, it can greatly improve the accuracy and reliability of fault judgment, while also avoiding misjudgment of seawater pump failure as much as possible, reducing maintenance costs and time. It also improves the reliability of other engine parts that need cooling.

[0032] Specifically, when the engine speed is stable, judging whether the water pressure at the seawater pump outlet is greater than the preset pressure value can improve the accuracy of the judgment. If the water pressure at the seawater pump outlet is greater than the preset pressure value, a seawater pump failure is recorded, and the steps of judging whether the water pressure at the seawater pump outlet is greater than the preset pressure value and the like are repeated when the engine speed is stable.

[0033] As an optional embodiment, the method further includes: if the accumulated number of failures is greater than a preset number, outputting a signal for indicating the failure of the seawater pump.

[0034] It can greatly improve the accuracy and reliability of fault judgment, prevent misjudgment of seawater pump failure, reduce maintenance costs and time, and improve the reliability of other engine parts that need cooling.

[0035] As an optional embodiment, the determination of whether the engine speed is in a stable state includes: obtaining the engine speed change rate; determining whether the engine speed change rate is greater than a preset speed change rate; if the engine speed change rate is greater than the preset speed change rate, the engine speed is not in a stable state.

[0036] By judging the stability of the engine speed in a manner that the engine speed change rate is greater than a preset speed change rate, the accuracy of seawater pump failure judgment can be further improved.

[0037] As an optional embodiment, if the engine speed change rate is less than a preset speed change rate, the engine speed is in a stable state.

[0038] As an optional embodiment, the seawater pump includes a water pressure sensor arranged at the water outlet; and obtaining the engine speed and the water pressure at the seawater pump outlet includes: determining a water pressure signal value obtained by the water pressure sensor.

[0039] Specifically, a water pressure sensor is arranged at the water outlet of the seawater pump, so as to accurately obtain the seawater pressure of the seawater pump, and further improve the accuracy of seawater pump fault judgment.

[0040] As an optional embodiment, it further includes: if the accumulated number of failures within a preset time period is greater than a preset number, outputting a signal for indicating the failure of the seawater pump.

[0041] That is, when the engine speed is stable, judging whether the water pressure at the outlet of the seawater pump is greater than the preset pressure value can improve the accuracy of the judgment. If the water pressure at the outlet of the seawater pump is greater than the preset pressure value, a seawater pump failure is recorded, and the steps of judging whether the water pressure at the outlet of the seawater pump is greater than the preset pressure value are repeated when the engine speed is stable. Within the preset time, if the cumulative number of failures exceeds the preset number, it indicates that the seawater pump is faulty, and a signal for characterizing the seawater pump failure is output at this time. The signal characterizing the seawater pump failure can be a sound signal or a method of outputting preset content, and this application does not limit this.

[0042] As an optional embodiment, if the cumulative number of failures is less than a preset number when the preset time is reached, the cumulative number of failures is cleared to 0.

[0043] According to another aspect of the present application, a fault diagnosis system for a seawater pump for a marine engine is provided, comprising: an acquisition module for acquiring the engine speed and the water pressure at the seawater pump outlet; a state judgment module for judging whether the engine speed is in a stable state; a water pressure judgment module for judging whether the water pressure at the seawater pump outlet is greater than a preset pressure value when the engine speed is stable; and a recording module for accumulating and recording the number of faults when the water pressure at the water pump outlet is greater than the preset pressure value.

[0044] According to another aspect of the present application, there is provided an electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus, and the memory is used to store a computer program; and the processor is used to execute the steps of a fault diagnosis method for a seawater pump for a marine engine by running the computer program stored in the memory.

[0045] According to another aspect of the present application, a computer-readable storage medium is provided, characterized in that a computer program is stored in the storage medium, wherein the computer program is configured to execute the steps of the fault diagnosis method for a seawater pump for a marine engine when running.

[0046] As an optional embodiment, the specific examples in this embodiment can refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0047] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments can be completed by instructing hardware related to the terminal device through a program, and the program can be stored in a computer-readable storage medium.

[0048] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0049] If the integrated units in the above embodiments are implemented in the form of software functional units and sold or used as independent products, they can be stored in the above computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling one or more computer devices (which may be personal computers, servers, or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0050] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0051] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0052] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in this embodiment.

[0053] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0054] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for diagnosing a fault of a seawater pump for a marine engine, characterized in that: The fault diagnosis method comprises: S1 obtains the engine speed and the water pressure at the seawater pump outlet; S2 determines whether the engine speed is in a stable state; S3: if the engine speed is stable, determining whether the water pressure at the seawater pump outlet is greater than a preset pressure value; S4: If the water pressure at the outlet of the seawater pump is greater than the preset pressure value, the number of failures is accumulated and recorded, and the steps S1-S3 are repeated.

2. The fault diagnosis method for a seawater pump for a marine engine according to claim 1, characterized in that: Also includes: If the accumulated number of failures is greater than a preset number, a signal for indicating the failure of the seawater pump is output.

3. The fault diagnosis method for a seawater pump for a marine engine according to claim 1, characterized in that: The determining whether the engine speed is in a stable state comprises: Get the engine speed change rate; Determining whether the engine speed change rate is greater than a preset speed change rate; If the engine speed change rate is greater than the preset speed change rate, the engine speed is not in a stable state.

4. The fault diagnosis method for a seawater pump for a marine engine according to claim 3, characterized in that: If the engine speed change rate is less than the preset speed change rate, the engine speed is in a stable state.

5. The fault diagnosis method for a seawater pump for a marine engine according to claim 1, characterized in that: The seawater pump includes a water pressure sensor disposed at a water outlet; the step of obtaining the engine speed and the water pressure at the seawater pump outlet includes: Determine the water pressure signal value obtained by the water pressure sensor.

6. The fault diagnosis method for a seawater pump for a marine engine according to claim 1, characterized in that: Also includes: If the accumulated number of failures within the preset time period is greater than the preset number, a signal for indicating the failure of the seawater pump is output.

7. The fault diagnosis method for a seawater pump for a marine engine according to claim 6, characterized in that: If the accumulated fault times are less than the preset times when the preset time is reached, the accumulated fault times will be cleared to 0.

8. A fault diagnosis system for a seawater pump for a marine engine, characterized in that: include: An acquisition module is used to obtain the engine speed and the water pressure at the outlet of the seawater pump; A state judgment module is used to judge whether the engine speed is in a stable state; A water pressure judgment module, used for judging whether the water pressure at the water outlet of the seawater pump is greater than a preset pressure value when the engine speed is stable; The recording module is used to cumulatively record the number of faults when the water pressure at the outlet of the seawater pump is greater than a preset pressure value.

9. An electronic device comprising a processor, a communication interface, a memory and a communication bus, wherein: The processor, the communication interface and the memory communicate with each other via the communication bus, wherein: The memory is used to store computer programs; The processor is used to execute the steps of the fault diagnosis method for a seawater pump for a marine engine according to any one of claims 1 to 7 by running the computer program stored in the memory.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the steps of the method for diagnosing a fault of a seawater pump for a marine engine according to any one of claims 1 to 7 when the computer program is run.

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