CN212155116U - Fault diagnosis device and system of plunger pump and excavator - Google Patents
Fault diagnosis device and system of plunger pump and excavator Download PDFInfo
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- CN212155116U CN212155116U CN202020925507.9U CN202020925507U CN212155116U CN 212155116 U CN212155116 U CN 212155116U CN 202020925507 U CN202020925507 U CN 202020925507U CN 212155116 U CN212155116 U CN 212155116U
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Abstract
The application provides a fault diagnosis device, system and excavator of plunger pump relates to plunger pump technical field. The apparatus may include: the device comprises a vibration acceleration sensor, a processor and a communication unit, wherein the vibration acceleration sensor is arranged on the plunger pump and is electrically connected with the processor; the communication unit is connected with the processor; the vibration acceleration sensor is used for collecting vibration signals when the plunger pump works and transmitting the collected vibration signals to the processor; the processor is used for sending a vibration signal to the control device through the communication unit so as to enable the control device to acquire fault parameters of the plunger pump according to the vibration signal, and the fault parameters comprise at least one of the following parameters: whether the plunger pump breaks down or not and the type of the faults can be detected quickly by applying the embodiment of the application without manual troubleshooting, so that the fault diagnosis efficiency is improved.
Description
Technical Field
The application relates to the technical field of plunger pumps, in particular to a fault diagnosis device and system of a plunger pump and an excavator.
Background
The plunger pump is an important device of a hydraulic system in the excavator, the plunger pump absorbs oil and presses oil by changing the volume of a sealed working cavity through the reciprocating motion of the plunger in a cylinder body, and whether the plunger pump can normally operate or not determines whether the excavator can normally operate or not.
In the prior art, the failure detection of the plunger pump can only determine the failure cause and failure position manually based on experience or groping conditions.
Therefore, the conventional failure diagnosis method of the plunger pump has a problem of low diagnosis efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the present invention is to provide a failure diagnosis device and system for a plunger pump, and an excavator, which can improve the failure diagnosis efficiency of the plunger pump, in view of the above-described drawbacks of the prior art.
In order to achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:
in a first aspect, an embodiment of the present application provides a failure diagnosis device for a plunger pump, including: the device comprises a vibration acceleration sensor, a processor and a communication unit;
the vibration acceleration sensor is arranged on the plunger pump and is electrically connected with the processor; the communication unit is connected with the processor;
the vibration acceleration sensor is used for collecting vibration signals when the plunger pump works and transmitting the collected vibration signals to the processor;
the processor is used for sending a vibration signal to the control device through the communication unit so as to enable the control device to acquire fault parameters of the plunger pump according to the vibration signal, and the fault parameters comprise at least one of the following parameters: whether a fault occurs, the type of fault.
Optionally, the apparatus further comprises: the alarm is electrically connected with the processor.
Optionally, the alarm comprises an audible alarm and/or a light alarm.
Optionally, the vibration acceleration sensor includes a plurality of vibration acceleration sensors, and the plurality of vibration acceleration sensors are respectively disposed at different positions of the plunger pump.
Optionally, the apparatus further comprises a first display screen; the first display screen is electrically connected with the processor and used for displaying fault parameters of the plunger pump.
In a second aspect, an embodiment of the present application provides a fault diagnosis system for a plunger pump, including: a failure diagnosis device and a control apparatus including the plunger pump of the first aspect described above;
the control equipment is used for receiving the vibration signal sent by the fault diagnosis device; acquiring fault parameters of the plunger pump according to the vibration signals, and sending the fault parameters to a fault diagnosis device, wherein the fault parameters comprise at least one of the following parameters: whether a fault occurs, the type of fault.
Optionally, the control device comprises a display screen.
Optionally, the control device is further configured to send an alarm message to a failure diagnosis apparatus of the plunger pump when the failure parameter indicates that the plunger pump fails.
In a third aspect, an embodiment of the present application provides an excavator, including the failure diagnosis device for a plunger pump of the first aspect, wherein the vibration acceleration sensor is mounted on the plunger pump in the excavator.
Optionally, if the fault diagnosis device includes an alarm, the alarm is disposed on an instrument panel of the excavator.
The beneficial effect of this application is:
in a fault diagnosis device, system and excavator of plunger pump that this application embodiment provided, the device can include: the device comprises a vibration acceleration sensor, a processor and a communication unit, wherein the vibration acceleration sensor is arranged on the plunger pump and is electrically connected with the processor; the communication unit is connected with the processor; the vibration acceleration sensor is used for collecting vibration signals when the plunger pump works and transmitting the collected vibration signals to the processor; the processor is used for sending a vibration signal to the control device through the communication unit so as to enable the control device to acquire fault parameters of the plunger pump according to the vibration signal, and the fault parameters comprise at least one of the following parameters: whether the plunger pump breaks down or not and the type of the faults can be detected quickly by applying the embodiment of the application without manual troubleshooting, so that the fault diagnosis efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a failure diagnosis device for a plunger pump according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another fault diagnosis device for a plunger pump according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a fault diagnosis system of a plunger pump according to an embodiment of the present disclosure;
fig. 4 is a schematic flowchart of a plunger pump fault diagnosis method according to an embodiment of the present application;
fig. 5 is a schematic flow chart of another plunger pump fault diagnosis method provided in the embodiment of the present application;
fig. 6 is a schematic flow chart of another plunger pump fault diagnosis method provided in the embodiment of the present application;
fig. 7 is a schematic flow chart of another plunger pump fault diagnosis method provided in the embodiment of the present application;
fig. 8 is a schematic flow chart illustrating a further plunger pump fault diagnosis method according to an embodiment of the present application;
fig. 9 is a schematic flow chart of another plunger pump fault diagnosis method provided in the embodiment of the present application;
fig. 10 is a functional block diagram of a fault diagnosis device for a plunger pump according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Fig. 1 is a schematic structural diagram of a failure diagnosis device for a plunger pump according to an embodiment of the present application. The plunger pump is an important device of a hydraulic system, and can comprise a plurality of parts such as a valve plate, a plunger, a swash plate, a sliding shoe and the like, the plunger pump can realize oil absorption and oil pressing by changing the volume of a sealed working cavity through reciprocating motion of the plunger in a cylinder body, and the plunger pump can be used for equipment such as an excavator and the like, and the application is not limited herein. As shown in fig. 1, the failure diagnosis device 100 for a plunger pump includes: a vibration acceleration sensor 110, a processor 120 and a communication unit 130. The vibration acceleration sensor 110 is installed on the plunger pump and is electrically connected with the processor 120; the communication unit 130 is connected with the processor 120; the vibration acceleration sensor 110 is used for acquiring a vibration signal of the plunger pump during operation and transmitting the acquired vibration signal to the processor 120; a processor 120, configured to send a vibration signal to the control device through the communication unit 130, so that the control device (not shown in the figure) obtains a failure parameter of the plunger pump according to the vibration signal, where the failure parameter includes at least one of: whether a fault occurs, the type of fault.
Wherein, above-mentioned vibration acceleration sensor can be based on electrodynamic type, capacitanc, realization such as inductance type sensor, this application does not limit here, can select in a flexible way according to the application scene of reality, and actually when monitoring the plunger pump, then can install vibration acceleration sensor on the plunger pump, vibration signal through vibration acceleration sensor collection plunger pump during operation, and send this vibration signal to the treater, the treater then sends this vibration signal to external control equipment through communication unit, controlgear is after receiving this vibration signal, according to the different principles of vibration signal of plunger pump under the different operating modes, then can obtain the fault parameter of plunger pump according to this vibration signal.
Optionally, the failure parameter may include one or more types according to whether the plunger pump fails, if the plunger pump fails, the failure parameter may include non-failure indication information, and if the plunger pump fails, the failure parameter may include failure indication information, and a specific failure type, where the failure type may indicate which component in the plunger pump fails, for example, but not limited to, that the port plate fails. The control equipment is used for acquiring the fault parameters of the plunger pumps, the data processing process is realized through the special control equipment, the performance requirements of the fault diagnosis device on a processor can be reduced, the cost of the fault diagnosis device is reduced, and particularly when the fault diagnosis device comprises a plurality of plunger pumps in a certain application scene, optionally, vibration signals sent by the fault diagnosis devices of the plunger pumps can be processed in a centralized mode through one control equipment, and the manufacturing cost of the fault diagnosis device is greatly reduced.
In addition, the external device may be a device capable of performing data processing, such as a remote computer, a server, a processor, and the like, and the present application is not limited thereto; the communication unit may be a GPRS communication module, a bluetooth communication module, etc., and the present application is not limited herein and may be flexibly selected according to an actual application scenario.
In addition, after the control equipment acquires the fault parameters of the plunger pump, the fault parameters can be sent to the fault diagnosis device of the plunger pump, so that field workers of the plunger pump can know the working state of the plunger pump in real time, and particularly, when the fault of the plunger pump is detected, the maintenance can be carried out in time, and the working efficiency is ensured.
In summary, the failure diagnosis device for a plunger pump provided in the embodiments of the present application may include: the device comprises a vibration acceleration sensor, a processor and a communication unit, wherein the vibration acceleration sensor is arranged on the plunger pump and is electrically connected with the processor; the communication unit is connected with the processor; the vibration acceleration sensor is used for collecting vibration signals when the plunger pump works and transmitting the collected vibration signals to the processor; the processor is used for sending a vibration signal to the control device through the communication unit so as to enable the control device to acquire fault parameters of the plunger pump according to the vibration signal, and the fault parameters comprise at least one of the following parameters: whether the plunger pump has the fault or not and the fault type can be rapidly detected in real time by applying the embodiment of the application without manual troubleshooting, so that the fault diagnosis efficiency is improved.
Fig. 2 is a schematic structural diagram of another fault diagnosis device for a plunger pump according to an embodiment of the present application. Optionally, in order to make a timely alarm when a failure of the plunger pump is detected, as shown in fig. 2, the failure diagnosis device for the plunger pump may further include: the alarm 150, the alarm 150 is electrically connected with the processor 120. Can report to the police through the setting of alarm when detecting plunger pump breaks down in order in time to remind the staff on-the-spot to maintain through the alarm, guarantee the work efficiency of plunger pump.
It should be noted that the signal for triggering the alarm to alarm may be sent to the processor by the control device, or may be generated by the processor according to the received fault parameter.
Optionally, the alarm comprises an audible alarm and/or a light alarm according to the actual working scene. According to the practical application scene, the sound alarm or the light alarm can be selected to be set to perform sound alarm or light alarm, of course, if the field staff who guarantees the plunger pump can timely receive the alarm signal, the sound alarm and the light alarm can be simultaneously set to perform sound and light combined alarm, the application is not limited, and the sound alarm and the light alarm can be flexibly set according to the practical application scene.
Optionally, in order to achieve overall detection of the plunger pump, the vibration acceleration sensor may include a plurality of vibration acceleration sensors, and the plurality of vibration acceleration sensors may be respectively disposed at different positions of the plunger pump. Optionally, one or more vibration acceleration sensors may be disposed in the X, Y, Z direction of the plunger pump, and may be flexibly disposed according to the actual application scenario, which is not limited herein. By arranging the plurality of vibration acceleration sensors, when the control equipment acquires the fault parameters of the plunger pump according to the vibration signals acquired by the plurality of vibration acceleration sensors during the working of the plunger pump, more accurate fault parameters can be acquired, and more accurate fault diagnosis results can be acquired.
Optionally, in order to visually display the fault parameters of the plunger pump, implement visualization of the fault parameters, and improve user experience, as shown in fig. 2, the fault diagnosis apparatus of the plunger pump may further include a first display screen 160; the first display screen 160 is electrically connected to the processor 120 for displaying fault parameters of the plunger pump.
Of course, the present application does not limit the physical location of the first display screen 160, and the first display screen may be located at a position convenient for the field worker to view. For example, can set up the position that the staff of being convenient for looked over on the plunger pump, perhaps again, above-mentioned plunger pump is when the embedded part of certain equipment (for example, excavator), then, can set up first display screen in the driver's cabin of excavator, and the staff of being convenient for can monitor the operating condition of plunger pump through this first display screen, but does not regard this as the limit, can set up in a flexible way according to the practical application scene.
The excavator becomes one of the indispensable engineering machinery in modern engineering construction, and the plunger pump is one of the key spare parts in the excavator, and whether it can normally operate or not is concerned with whether the excavator can normally work, if this key spare part suddenly breaks down, will delay the progress of engineering. Based on this, the embodiment of the present application provides an excavator, which may include the above fault diagnosis device for a plunger pump, wherein a vibration acceleration sensor is installed on the plunger pump in the excavator, and by applying the embodiment of the present application, the working state of the plunger pump in the excavator may be detected in real time, and an early fault of the plunger pump in the excavator may be effectively discovered, that is, the early fault may be discovered when the plunger pump is in a fault germination state, so that loss caused by a major fault is avoided; in addition, if when detecting the trouble, can also fix a position fast the position that breaks down, when being convenient for the plunger pump breaks down, the staff can in time maintain the plunger pump, guarantees the work efficiency of excavator.
Of course, it should be noted that the application of the fault diagnosis device for the plunger pump is not limited to the excavator, and may also be applied to other scenarios, for example, an automobile, and when the fault diagnosis device is applied to other scenarios, reference may be made to the case of applying to the excavator, and details of the application are not described herein again.
Alternatively, if the fault diagnosis device includes an alarm, the alarm may be provided on a dashboard of the excavator. Optionally, this alarm can be light alarm, through add the alarm on the panel board of excavator for when the plunger pump breaks down in this excavator, light alarm can remind the driver through the mode of long bright or scintillation, realizes reporting to the police, is convenient for in time maintain the plunger pump, guarantees the work efficiency of excavator.
Fig. 3 is a schematic diagram of an architecture of a fault diagnosis system of a plunger pump according to an embodiment of the present application, where the fault diagnosis system of the plunger pump can perform remote fault diagnosis on the plunger pump, and as shown in fig. 3, the fault diagnosis system of the plunger pump may include: the failure diagnosis device 100 and the control device 220 of the plunger pump described above; the control device 220 is configured to receive a vibration signal sent by the fault diagnosis apparatus; acquiring fault parameters of the plunger pump according to the vibration signals, and sending the fault parameters to the fault diagnosis device, wherein the fault parameters comprise at least one of the following parameters: whether a fault occurs, the type of fault.
For the working process of the fault diagnosis device of the plunger pump, reference may be made to the related parts described above, and details of the application are not described herein. As shown in fig. 3, the failure diagnosis device 100 of the plunger pump may communicate with the control device 220 through the network 210, and in the failure diagnosis system of the plunger pump provided in the embodiment of the present application, because the control device 220 may obtain the failure parameter of the plunger pump according to the vibration signal sent by the failure diagnosis device 100 of the plunger pump, and implement remote failure diagnosis of the plunger pump, compared with a manual layout method, the failure diagnosis system of the plunger pump provided in the present application may perform failure diagnosis of the plunger pump remotely without manually going to the field, so as to improve the failure diagnosis efficiency of the plunger pump.
It should be noted that, of course, the number of the fault diagnosis devices included in the fault diagnosis system of the plunger pump is not limited in this application, and may include one or more fault diagnosis devices according to an actual application scenario, as shown in fig. 3, the number of the fault diagnosis devices may include 3, if the number of the fault diagnosis devices includes a plurality of fault diagnosis devices, the fault diagnosis device of each plunger pump may correspond to an identifier, and when the vibration signal is sent to the control device through the communication unit, the corresponding identifier may be carried in the vibration signal, so that the control device may distinguish the received vibration signals sent by the plurality of fault diagnosis devices according to the corresponding identifier.
Optionally, in order to enable the staff in the system to visually observe the fault parameters of each plunger pump, the control device may include a display screen, through which the fault parameters of the plunger pumps may be displayed, as shown in fig. 3, and especially when the number of the monitored plunger pumps is multiple, the staff may monitor the operating states of the multiple plunger pumps in all directions through the display screen. Optionally, the control device may be an upper computer, but is not limited thereto.
Optionally, in order to alarm in time when it is monitored that a certain plunger pump fails, the control device is further configured to send alarm information to a failure diagnosis device of the plunger pump when the failure parameter indicates that the plunger pump fails, so that a field worker of the plunger pump can maintain the plunger pump in time through the alarm information, and work efficiency of the plunger pump is ensured.
Of course, it should be noted that, according to an actual application scenario, the control device may send alarm information to the fault diagnosis device of the plunger pump, and may also send alarm information to a relevant worker, for example, send a short message to the worker to remind the worker.
Fig. 4 is a schematic flowchart of a plunger pump fault diagnosis method provided by an embodiment of the present application, which may be implemented by a control device in the foregoing system, as shown in fig. 4, and the method may include:
and S110, receiving a vibration signal sent by the fault diagnosis device, wherein the vibration signal is a vibration signal acquired by a vibration acceleration sensor in the fault diagnosis device when the plunger pump works.
And S120, inputting the vibration signal into the plunger pump fault prediction model, and outputting a fault parameter.
Wherein the fault parameters include at least one of: and if the fault and the fault type occur, the plunger pump fault prediction model is obtained by training according to a plurality of training sample data marked with fault parameters.
Wherein, the plunger pump failure prediction model that the training was obtained can be used for handling the vibration signal that failure diagnosis device sent, the fault parameter that this vibration signal of output corresponds, whether the plunger pump that monitors can confirm through this fault parameter breaks down, and the fault parameter that corresponds when breaking down, realize the long-range to the plunger pump, automatic fault diagnosis, accelerate fault diagnosis's efficiency, make and eliminate the trouble in the bud state, buffer time has been reserved for the staff, also let maintenance work scientific and efficient more, reduce the influence of plunger pump trouble to the construction.
Fig. 5 is a schematic flow chart of another plunger pump fault diagnosis method according to an embodiment of the present application. Optionally, as shown in fig. 5, the method includes:
s210, obtaining a plurality of training sample data marked with fault parameters.
And S220, training and obtaining a plunger pump fault prediction model according to the training data set.
The training sample data can include sample data when a fault occurs and sample data when no fault occurs, each training sample data can be marked with a fault parameter, the fault parameter can include whether a fault occurs, and if a fault occurs, the fault parameter can further include a fault type, wherein the fault type can be used for representing the position where the fault occurs, that is, indicating which parts in the plunger pump specifically have faults, so that when the plunger pump fault prediction model obtained through training of the training sample data is used for fault prediction of the plunger pump, whether the plunger pump to be detected has faults or not can be predicted, and the specific position where the fault occurs can be predicted, compared with a manual troubleshooting mode, especially when the experience of troubleshooting personnel is insufficient, by applying the plunger pump fault prediction model provided by the embodiment of the application, on the one hand, the accuracy of fault diagnosis can be improved, and on the other hand, the fault diagnosis efficiency can be improved.
Fig. 6 is a schematic flow chart of another plunger pump fault diagnosis method according to an embodiment of the present application. Alternatively, as shown in fig. 6, the process of inputting the vibration signal into the plunger pump failure prediction model and outputting the failure parameter may be referred to the following, and the step may include:
and S310, extracting a feature vector corresponding to the vibration signal.
And S320, outputting fault parameters corresponding to the characteristic vectors according to the support vector machine algorithm.
The feature vector corresponding to the vibration signal may represent feature information of the vibration signal, and the feature information may be extracted through algorithms such as variational modal decomposition, which is not limited herein. The Support Vector Machine (SVM) is a Machine learning method, data of a nonlinear classification space can be projected into a high-dimensional linear classification space by adopting a proper kernel function, and the SVM has strong nonlinear classification capability, so that after a feature Vector corresponding to a vibration signal to be detected is extracted, the feature Vector can be input into a plunger pump fault prediction model, the feature Vector is classified by a Support Vector Machine algorithm, fault parameters corresponding to the feature Vector are determined according to a classification result, whether the plunger pump fails or not is determined, and a specific fault type is determined when the plunger pump fails.
Fig. 7 is a schematic flowchart of another plunger pump fault diagnosis method according to an embodiment of the present application. Optionally, as shown in fig. 7, the extracting the feature vector corresponding to the vibration signal includes:
and S410, extracting modal components corresponding to the vibration signals according to a variation modal decomposition algorithm.
And S420, quantizing the modal components by adopting a fuzzy approximate entropy algorithm, and acquiring quantized feature vectors.
The Variable Mode Decomposition (VMD) algorithm is an adaptive, quasi-orthogonal, and completely non-recursive Decomposition method, and has strong robustness to sampling and noise, and the variable mode Decomposition algorithm can decompose an incoming vibration signal into a plurality of natural modes with limited bandwidth, and most of the modes surround their corresponding center frequencies tightly, optionally, the variable mode Decomposition algorithm can be a fast variable mode Decomposition algorithm, and can be adjusted flexibly according to actual application scenarios, and the application is not limited herein; the fuzzy approximate entropy is a fuzzy set concept of Zadeh introduced on the basis of the approximate entropy, similarity among vectors is defined by a fuzzy function, fault features are quantified by the fuzzy approximate entropy, and feature information contained in the vibration signals can be reflected.
Fig. 8 is a schematic flowchart of another plunger pump fault diagnosis method according to an embodiment of the present application.
Optionally, as shown in fig. 8, the outputting the fault parameter corresponding to the feature vector according to the support vector machine algorithm includes:
and S510, calculating a discrimination function value corresponding to the feature vector based on a preset discrimination function in the support vector machine algorithm.
And S520, outputting the fault parameter corresponding to the feature vector according to the discrimination function value corresponding to the feature vector and a preset function threshold.
The discriminant function can be a linear kernel function, a polynomial kernel function, a radial basis kernel function, a Simoid kernel function and the like in a support vector machine algorithm, and the discriminant function is not limited in the application and can be flexibly selected according to an actual application scene; the preset function threshold is a preset threshold corresponding to a preset discrimination function, and the discrimination function value corresponding to the feature vector is compared with the preset function threshold, so that the fault parameter corresponding to the feature vector can be determined according to the comparison result. For example, the preset function threshold is M, the discrimination function value corresponding to a certain feature vector is Y, if Y > M, it is determined that a port plate in the plunger pump has a fault, and if Y < M, it is determined that a plunger in the plunger pump has a fault, but not limited thereto, and the present application is only schematically described herein. In summary, when the embodiment of the application is applied to determining the fault parameters of the plunger pump, the method has the characteristics of simple discrimination mode and high fault diagnosis efficiency.
Fig. 9 is a schematic flowchart of another plunger pump fault diagnosis method according to an embodiment of the present application. Optionally, as shown in fig. 9, the method further includes:
s610, training and determining a preset function threshold according to a plurality of training sample data marked with fault parameters.
Each fault parameter may correspond to a preset threshold, for example, a port plate fault may correspond to a first preset function threshold, a plunger fault may correspond to a second preset function threshold, and a swash plate fault may correspond to a third preset function threshold, and when a fault parameter corresponding to each feature vector is determined, the fault parameter may be determined according to different preset function thresholds. It should be noted that each preset function threshold may be obtained by training according to a plurality of training sample data labeled with a fault parameter, that is, the preset function thresholds corresponding to different fault parameters may be determined through training, so that when outputting a fault parameter corresponding to a feature vector based on a feature vector corresponding to a vibration signal to be detected and according to a discrimination function value and a preset function threshold corresponding to the feature vector, the accuracy of fault diagnosis may be improved, and an application scenario of the model may be improved.
Fig. 10 is a functional block diagram of a fault diagnosis device for a plunger pump according to an embodiment of the present application, the basic principle and the technical effect of the device are the same as those of the corresponding method embodiment, and for a brief description, the corresponding contents in the method embodiment may be referred to for parts not mentioned in this embodiment. As shown in fig. 10, the failure diagnosis apparatus 300 of the plunger pump may include: a receiving module 310 and an output module 320.
The receiving module 310 is configured to receive a vibration signal sent by the fault diagnosis device, where the vibration signal is a vibration signal acquired by a vibration acceleration sensor in the fault diagnosis device when the plunger pump operates; an output module 320, configured to input the vibration signal into a failure prediction model of the plunger pump, and output failure parameters, where the failure parameters include at least one of: and if the fault and the fault type occur, the plunger pump fault prediction model is obtained by training according to a plurality of training sample data marked with fault parameters.
Optionally, the output module 320 is specifically configured to extract a feature vector corresponding to the vibration signal; and outputting the fault parameters corresponding to the characteristic vectors according to the algorithm of the support vector machine.
Optionally, the output module 320 is specifically configured to extract a modal component corresponding to the vibration signal according to a variational modal decomposition algorithm; and quantizing the modal components by adopting a fuzzy approximate entropy algorithm to obtain quantized feature vectors.
Optionally, the output module 320 is specifically configured to calculate a discrimination function value corresponding to the feature vector based on a preset discrimination function in the support vector machine algorithm; and outputting fault parameters corresponding to the feature vectors according to the discrimination function values corresponding to the feature vectors and the preset function threshold.
Optionally, the fault diagnosis apparatus for a plunger pump further includes: and the determining module is used for training and determining the preset function threshold according to a plurality of training sample data marked with the fault parameters.
The above-mentioned apparatus is used for executing the method provided by the foregoing embodiment, and the implementation principle and technical effect are similar, which are not described herein again.
These above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when one of the above modules is implemented in the form of a Processing element scheduler code, the Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A failure diagnosis device for a plunger pump, comprising: the device comprises a vibration acceleration sensor, a processor and a communication unit;
the vibration acceleration sensor is arranged on the plunger pump and is electrically connected with the processor; the communication unit is connected with the processor;
the vibration acceleration sensor is used for collecting vibration signals when the plunger pump works and transmitting the collected vibration signals to the processor;
the processor is used for sending the vibration signal to a control device through the communication unit so as to enable the control device to obtain fault parameters of the plunger pump according to the vibration signal, wherein the fault parameters comprise at least one of the following parameters: whether a fault occurs, the type of fault.
2. The fault diagnosis device according to claim 1, characterized in that the device further comprises: and the alarm is electrically connected with the processor.
3. The failure diagnosing device according to claim 2, wherein the alarm includes an audible alarm and/or a light alarm.
4. The failure diagnosing device according to claim 1, wherein the vibration acceleration sensor includes a plurality of vibration acceleration sensors, and the plurality of vibration acceleration sensors are provided at different positions of the plunger pump, respectively.
5. The failure diagnosing device according to claim 1, wherein the device further includes a first display screen;
the first display screen is electrically connected with the processor and used for displaying fault parameters of the plunger pump.
6. A failure diagnosis system for a plunger pump, comprising: a failure diagnosis apparatus and a control device including the plunger pump according to any one of claims 1 to 5;
the control equipment is used for receiving the vibration signal sent by the fault diagnosis device; acquiring fault parameters of the plunger pump according to the vibration signals, and sending the fault parameters to the fault diagnosis device, wherein the fault parameters comprise at least one of the following parameters: whether a fault occurs, the type of fault.
7. The failure diagnostic system of a plunger pump according to claim 6, characterized in that the control device comprises a display screen.
8. The system of claim 6, wherein the control device is further configured to send an alarm message to a failure diagnosis apparatus of the plunger pump when the failure parameter indicates that the plunger pump has failed.
9. An excavator comprising the plunger pump failure diagnosis apparatus of any one of claims 1 to 5, wherein the vibration acceleration sensor is mounted on the plunger pump in the excavator.
10. The excavator of claim 9 wherein if the fault diagnosis device comprises an alarm, the alarm is located on an instrument panel of the excavator.
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| CN202020925507.9U CN212155116U (en) | 2020-05-27 | 2020-05-27 | Fault diagnosis device and system of plunger pump and excavator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114691401A (en) * | 2020-12-31 | 2022-07-01 | 三一汽车制造有限公司 | Monitoring system and method for work machine, work machine and electronic device |
| CN114922806A (en) * | 2022-04-27 | 2022-08-19 | 北京天玛智控科技股份有限公司 | Method and device for detecting abnormality of plunger pump |
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2020
- 2020-05-27 CN CN202020925507.9U patent/CN212155116U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114691401A (en) * | 2020-12-31 | 2022-07-01 | 三一汽车制造有限公司 | Monitoring system and method for work machine, work machine and electronic device |
| CN114922806A (en) * | 2022-04-27 | 2022-08-19 | 北京天玛智控科技股份有限公司 | Method and device for detecting abnormality of plunger pump |
| CN114922806B (en) * | 2022-04-27 | 2023-11-24 | 北京天玛智控科技股份有限公司 | Abnormality detection method and device for plunger pump |
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