CN112082696A - Dynamic balancing method and device for rotary machine - Google Patents
Dynamic balancing method and device for rotary machine Download PDFInfo
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- G01M1/00—Testing static or dynamic balance of machines or structures
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Abstract
A rotary machine dynamic balancing method and device, the method comprising: acquiring historical dynamic balance data of a rotating machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis positions and vibration vectors; acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter; and weighting the rotating machine according to the magnitude to be weighted and the historical dynamic balance data. The dynamic balance adjusting method and device for the rotary machine can accurately and efficiently complete dynamic balance adjustment only by means of a handheld vibration meter on site under the condition that the influence coefficient of the vibration phase is not measured according to historical dynamic balance data.
Description
Technical Field
The application relates to the technical field of fault diagnosis of rotary machines, in particular to a dynamic balance method of a rotary machine.
Background
The rotating machinery is widely applied to industries such as electric power industry, petrochemical industry and the like, and in actual engineering, the rotating part of the rotating machinery is often unbalanced in quality under the influence of factors such as working environment, equipment process level and the like. The mass imbalance may cause rotating components of the rotating machine to vibrate. When the vibration range exceeds a threshold value, a dynamic balance test is adopted to weaken the phenomenon of mass unbalance, so that the operation safety of the rotary machine is guaranteed. Therefore, vibration parameters of rotating components of a rotating machine are often used as important monitoring means to evaluate the safety of the operation of the rotating machine.
At present, methods for realizing dynamic balance of rotating machinery mainly fall into two main categories: the dynamic balance method needs to measure the influence coefficient of the vibration phase and the dynamic balance method does not need to measure the influence coefficient of the vibration phase. The dynamic balance method for measuring the influence coefficient of the vibration phase is widely adopted due to the advantages of high dynamic balance precision, few starting and stopping times of the rotary machine and the like, but the synchronous acquisition of vibration and phase needs to be carried out by a special vibration analysis instrument in the process of carrying out dynamic balance adjustment. Therefore, a professional technician often needs to carry a vibration analysis instrument to a site to perform a dynamic balance test, and during the period that the technician visits the site, the site is subjected to a vibration fault of the rotating machine, so that the production cannot be continued, and the production progress is influenced. Therefore, this dynamic balancing method is not convenient in use. The existing dynamic balance method without measuring the vibration phase influence coefficient generally has the defects of large calculation error and more starting times of equipment, and is not convenient to popularize and apply.
Disclosure of Invention
Aiming at the problems in the prior art, the application provides a dynamic balance method and a dynamic balance device for a rotary machine, which can accurately and efficiently finish dynamic balance adjustment by only using a handheld vibration meter on site under the condition of not measuring the influence coefficient of a vibration phase according to historical dynamic balance data.
In order to solve the technical problem, the application provides the following technical scheme:
in a first aspect, the present application provides a dynamic balancing method for a rotating machine, comprising:
acquiring historical dynamic balance data of a rotating machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis positions and vibration vectors;
acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter;
and weighting the rotating machine according to the magnitude to be weighted and the historical dynamic balance data.
Further, the vibration vector includes: a first vibration vector before dynamic balance adjustment and a second vibration vector after dynamic balance adjustment; the calculating of the influence parameters according to the historical dynamic balance data comprises:
calculating an absolute value of a difference between the first vibration vector and the second vibration vector;
and calculating the ratio of the historical weighting value to the absolute value to obtain the influence parameter.
Further, weighting the rotating machine according to the to-be-weighted magnitude value and the historical dynamic balance data, comprising: and weighting the rotating machine according to the value to be weighted and the circumference of the historical weighting position.
Further, after the rotating machine is weighted, the method further comprises the following steps:
acquiring a current vibration value of the rotary machine, and judging whether the current vibration value meets a threshold condition of dynamic balance;
if not, calculating the current counterweight deflection angle of the rotating machine;
and moving the balancing weight along the circumference on the rotating machine according to the current balancing weight deflection angle.
Further, the direction of moving the weight block along the circumference is clockwise or counterclockwise, and after moving the weight block along the circumference on the rotating machine according to the current weight deflection angle, the method further includes:
obtaining a current vibration value after the balancing weight is moved;
and if the current vibration value after the counterweight block is moved is increased relative to the current vibration value before the counterweight block is moved, taking the position before the counterweight block is moved as a starting point, and moving the counterweight block on the circumference in the direction opposite to the direction of the previous counterweight block movement according to the current counterweight deflection angle.
Further, the calculating a current counterweight deflection angle of the rotating machine includes:
and calculating the current counterweight deflection angle according to the original vibration value and the current vibration value.
In a second aspect, the present application provides a rotary machine dynamic balancing apparatus comprising:
the calculating unit is used for acquiring historical dynamic balance data of the rotary machine and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis positions and vibration vectors;
the generating unit is used for acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter;
and the weighting unit is used for weighting the rotating machine according to the value of the to-be-weighted amount and the historical dynamic balance data.
Further, the vibration vector includes: a first vibration vector before dynamic balance adjustment and a second vibration vector after dynamic balance adjustment; the calculation unit includes:
a first calculation module for calculating an absolute value of a difference between the first vibration vector and the second vibration vector;
and the second calculation module is further used for calculating the ratio of the historical weighting value to the absolute value to obtain the influence parameter.
Further, the weighting unit is specifically configured to weight the rotary machine according to the value of the to-be-weighted amount and the circumference where the historical weighting position is located.
Further, the rotating machinery dynamic balance device further comprises:
the judging unit is used for acquiring the current vibration value of the rotary machine and judging whether the current vibration value meets the threshold condition of dynamic balance or not; when the current vibration value does not meet the threshold condition, the calculation unit is further configured to calculate a current counterweight deflection angle of the rotary machine;
and the moving unit is used for moving the balancing weight along the circumference on the rotating machine according to the current balancing weight deflection angle.
Further, the rotating machinery dynamic balance device further comprises:
the acquisition unit is used for acquiring a current vibration value after the balancing weight is moved; and the moving unit is further used for moving the balancing weight on the circumference in the direction opposite to the direction of the balancing weight moved last time according to the current balancing weight deflection angle by taking the position before the balancing weight is moved as a starting point when the current vibration value after the balancing weight is moved is increased relative to the current vibration value before the balancing weight is moved.
Further, the calculating unit is further specifically configured to calculate the current counterweight deflection angle according to the original vibration value and the current vibration value.
In a third aspect, the present application provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the rotating machine dynamic balancing method when executing the program.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the rotary machine dynamic balancing method.
According to the technical scheme, the dynamic balance method and the dynamic balance device for the rotary machine can calculate the influence parameters according to historical dynamic balance data, measure the vibration value only by means of a handheld vibration meter on the spot under the condition of not measuring the influence coefficient of the vibration phase, and accurately and efficiently complete dynamic balance adjustment through simple calculation.
Drawings
FIG. 1 is a flow chart of a dynamic balancing method for a rotating machine according to an embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating the steps of calculating impact parameters based on historical dynamic balance data according to an embodiment of the present application;
FIG. 3 is a second flowchart of a dynamic balancing method for a rotating machine according to an embodiment of the present invention;
FIG. 4 is a third flowchart of a dynamic balancing method for a rotating machine according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of calculating a counterweight deflection angle in an embodiment of the present application;
FIG. 6 is a view showing one of the structures of the dynamic balancing apparatus of the rotary machine according to the embodiment of the present application;
FIG. 7 is a second structural diagram of a dynamic balancing apparatus of a rotating machine according to an embodiment of the present application;
FIG. 8 is a third structural diagram of a dynamic balancing apparatus of a rotating machine according to an embodiment of the present invention;
FIG. 9 is a fourth structural view of a dynamic balancing apparatus of a rotary machine according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of an electronic device in an embodiment of the present application.
Detailed Description
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 only a part of the embodiments of the present application, and not all of the embodiments. 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.
Referring to fig. 1, in order to accurately and efficiently complete dynamic balance adjustment by using only a handheld vibration meter on site without measuring a vibration phase influence coefficient according to historical dynamic balance data, an embodiment of the present application provides a dynamic balance method for a rotary machine, including:
s101: acquiring historical dynamic balance data of the rotary machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data includes: historical emphasis values, historical emphasis locations, and vibration vectors.
It can be understood that in practical engineering, under the influence of factors such as working environment and process level of equipment, the rotary machine may continuously wear in the using process, thereby causing dynamic balance problem. The dynamic balance problem of the rotating machinery is generated continuously along with the use process, and the rotating machinery needs to be adjusted once at intervals in the use process of the equipment so as to keep the rotating machinery in a better dynamic balance state. Therefore, some historical dynamic balance data will be retained during the historical dynamic balance adjustment. The historical dynamic balance data has a strong reference value, because for a large-scale rotating machine, the self weight is relatively large, the operation mode is relatively fixed, the loss in the operation process is regular and can be followed frequently, and therefore the historical dynamic balance problem is likely to have obvious regularity. Accordingly, historical dynamic balance data can be used as a basis for calculating influence parameters of dynamic balance problems. In the embodiment of the present application, these rules may be embodied as an influence parameter, and the influence parameter is k.
In one embodiment, the historical dynamic balance data may include: historical emphasis values, historical emphasis locations, and vibration vectors. Wherein, the historical weighting value refers to the weight (unit: g) of the weighting block selected in the historical dynamic balance process. When the rotating part of the rotating machine rotates, a circular area can be marked out, when historical dynamic balance adjustment is carried out, the balancing weight can rotate along with the rotating part, a certain circumferential track is marked out in the circular area, and the historical weighting position is located on the circumferential track. The vibration vector comprises a vibration vector before dynamic balance adjustment and a vibration vector after dynamic balance adjustment in the historical dynamic balance adjustment process. The vibration vector refers to the magnitude and direction of the vibration value.
S102: and acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter.
It can be understood that, in the embodiment of the present application, the vibration phase corresponding to the dynamic balance problem does not need to be measured, and only the vibration value needs to be measured by using the handheld vibration meter, so that the to-be-weighted quantity value can be calculated by combining the influence parameters, and the to-be-weighted quantity value is set as M (unit: g). In this step, when the dynamic balance problem occurs in the rotary machine, the vibration value measured by using the handheld vibration meter is called an original vibration value, that is, the magnitude of the vibration of the rotary machine before the dynamic balance adjustment is performed, and the original vibration value may be set to a (unit: μm). When the original vibration value of the rotary machine to be subjected to dynamic balance adjustment is measured by adopting the handheld vibrating meter, the meter head of the handheld vibrating meter needs to be tightly attached to the bearing end cover of the rotary machine, and the original vibration value can be read out after the numerical value to be measured is stable. The formula for calculating the magnitude M to be weighted is M ═ a × k, where a is the original vibration value and k is the influence parameter (unit: g/μ M).
S103: and weighting the rotating machine according to the value of the to-be-weighted quantity and the historical dynamic balance data.
It can be understood that, calculating the weight value to be weighted can select a proper balancing weight according to the weight value to be weighted. According to the magnitude to be weighted and the historical dynamic balance data, the rotary machine can be weighted.
From the above description, the dynamic balance method for the rotary machine, provided by the application, can calculate the influence parameters according to historical dynamic balance data, and can accurately and efficiently complete dynamic balance adjustment through simple calculation only by measuring the vibration value by means of a handheld vibration meter on the spot under the condition of not measuring the influence coefficient of the vibration phase.
In one embodiment, the vibration vector comprises a first vibration vector and a second vibration vector, wherein the first vibration vector is a vibration vector before dynamic balance adjustment in a historical dynamic balance process; the second vibration vector is the vibration vector after dynamic balance adjustment in the historical dynamic balance process.
Referring to fig. 2, calculating the impact parameters from historical dynamic balance data includes:
s201: an absolute value of a difference between the first vibration vector and the second vibration vector is calculated.
S202: and calculating the ratio of the historical weighting value to the absolute value to obtain the influence parameter.
It can be understood that the calendar is in progressWhen the historical dynamic balance is adjusted, the weight of the balancing weight is the historical weight adding value m (unit: g). By adding a balancing weight to the rotating machine, the vibration of the rotating machine can be reduced from the first vibration vector to the second vibration vector. Let the first vibration vector be
The second vibration vector is
Then the parameter is affected
From the above description, the dynamic balance method for the rotary machine provided by the present application can calculate the influence parameter k according to the historical weighting value and the difference between the first vibration vector and the second vibration vector.
In one embodiment, weighting the rotating machine according to the to-be-weighted amount value and the historical dynamic balance data comprises: the rotary machine is weighted according to the value of the weight to be weighted and the circumference of the historical weighting position.
It can be understood that, when the dynamic balance problem occurs again in the rotating machine, the rotating machine can be weighted according to the to-be-weighted amount value and the circumference where the historical weighting position is located, that is, the counterweight corresponding to the to-be-weighted amount value is placed on the circumference where the historical weighting position is located. After the weight is added, the specific point where the weight block is located is recorded so as to be adjusted along the circumference when necessary.
From the above description, the dynamic balancing method for the rotating machine provided by the present application can weight the rotating machine according to the value of the weight to be weighted and the circumference of the historical weighting position.
In an embodiment, referring to fig. 3, after the rotating machine is weighted, the dynamic balancing method of the rotating machine provided by the present application further includes:
s301: and acquiring the current vibration value of the rotary machine, and judging whether the current vibration value meets the threshold condition of dynamic balance.
It will be appreciated that after the first weighting of the rotating machine, which has a dynamic balance problem, the rotating machine is started again, the vibration of the bearing is measured at the same measurement location using a hand-held vibrating meter, and the current vibration value B (in μm) of the rotating machine at that time is recorded. And judging whether the current vibration value meets the threshold condition of dynamic balance according to the numerical value displayed by the handheld vibration meter. The so-called threshold condition may be set differently depending on the rotating machine.
S302: if not, the current counterweight deflection angle of the rotating machine is calculated.
It is understood that if the current vibration value does not satisfy the threshold condition corresponding to the current rotating machine, the current counterweight deflection angle of the rotating machine needs to be calculated. Referring to fig. 5, let the vibration vector corresponding to the current vibration value B be ob, and according to the geometric principle, the vibration vector is obtained by vector-adding the vibration vector oa corresponding to the original vibration value and the vibration vector oc corresponding to the vibration caused by adding the balancing weight. In view of the geometrical symmetry, the vibration vector ob may also be equivalent to the vibration vector ob ', and the vibration vector oc may also be equivalent to the vibration vector oc'.
In an ideal state, in order to balance the vibration vector oa corresponding to the original vibration value, a vibration vector oc corresponding to the vibration caused by the weight block is generated on the opposite side of the vibration vector oa, and the magnitude of the vibration vector oc is equal to the magnitude of the vibration vector oa. In other words, in an ideal situation, the vibration vector oc should be a vector of equal magnitude and opposite direction to the vibration vector oa.
Referring to fig. 5, it is now assumed that the vibration vector oa is a vibration vector of a magnitude a in the upward direction and the vibration vector ob is B in magnitude. Based on the above conditions, an equilateral parallelogram can be drawn. In the equilateral parallelogram, the included angle between the vibration vector oa and the vibration vector oc is uniquely determined and can be calculated by a formula, wherein the specific formula is as follows:
where α is the current vibration deflection angle (unit: °). Therefore, the current counterweight deflection angle can be calculated, and the specific formula is as follows:
where β is the current vibration deflection angle (unit: °).
S303: the weight block is moved circumferentially on the rotary machine according to the current weight deflection angle.
It is understood that the process of moving the weight circumferentially on the rotary machine according to the current weight deflection angle may be understood as a process of adjusting the vibration vector oc to a vibration vector having the same magnitude as and the opposite direction to the vibration vector oa. That is, the placement position of the previous weight is not proper, and the vibration vector oa corresponding to the original vibration value cannot be well balanced. Therefore, now to achieve the above objective, the weight block needs to be moved on the rotating machine along the circumference, and the angle corresponding to the moving arc should be the size of the current weight deflection angle.
From the above description, the dynamic balancing method for the rotary machine provided by the application can determine whether the current vibration value meets the threshold condition of dynamic balancing, and under the condition that the threshold condition is not met, calculate the current counterweight deflection angle, and move the counterweight block on the rotary machine along the circumference according to the current counterweight deflection angle to adjust the dynamic balancing effect.
In one embodiment, the direction of moving the weight block along the circumference is clockwise or counterclockwise.
Referring to fig. 4, after moving the weight circumferentially on the rotary machine according to the current weight deflection angle, the method further includes:
s401: and acquiring the current vibration value after the balancing weight is moved.
It will be appreciated that after moving the weight circumferentially on the rotary machine according to the current weight deflection angle, the current vibration value of the rotary machine may be measured in the field using a hand-held vibration meter.
S402: and if the current vibration value after the balancing weight is moved is increased relative to the current vibration value before the balancing weight is moved, taking the position before the balancing weight is moved as a starting point, and moving the balancing weight on the circumference in the direction opposite to the direction of moving the balancing weight last time according to the current balancing weight deflection angle.
It can be understood that if the current vibration value after moving the weight block is increased relative to the current vibration value before moving the weight block, it indicates that the direction of moving the weight block just now is opposite to the actually required moving direction. At this time, the weight block should be moved on the circumference in the opposite direction to the previous movement of the weight block according to the current deflection angle of the weight block, starting from the position before the movement of the weight block. In general, the dynamic balance adjustment of the rotating machine can be completed by the above operations.
From the above description, the dynamic balancing method for the rotary machine provided by the application can judge whether the direction of the moving balancing weight is correct or not according to the current vibration value, and if the direction is incorrect, the balancing weight is moved on the circumference along the direction opposite to the previous moving balancing weight according to the current balancing weight deflection angle.
Based on the same inventive concept, the embodiment of the present application further provides a dynamic balancing apparatus for a rotary machine, which can be used to implement the methods described in the above embodiments, as described in the following embodiments. Because the principle of the rotating mechanical dynamic balance device for solving the problems is similar to that of the rotating mechanical dynamic balance method, the implementation of the rotating mechanical dynamic balance device can refer to the implementation of the software performance reference determination method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
Referring to fig. 6, in order to accurately and efficiently complete dynamic balance adjustment by using only a handheld vibration meter on site without measuring a vibration phase influence coefficient according to historical dynamic balance data, an embodiment of the present application provides a dynamic balance apparatus for a rotary machine, including: calculation section 601, generation section 602, and emphasis section 603.
A calculating unit 601, configured to obtain historical dynamic balance data of the rotary machine, and calculate an influence parameter according to the historical dynamic balance data; the historical dynamic balance data includes: historical emphasis values, historical emphasis positions and vibration vectors;
a generating unit 602, configured to obtain an original vibration value of the rotary machine and generate a to-be-weighted magnitude according to the original vibration value and the influence parameter;
and a weighting unit 603 for weighting the rotating machine according to the value of the weight to be weighted and the historical dynamic balance data.
Referring to fig. 7, the vibration vector includes: a first vibration vector before dynamic balance adjustment and a second vibration vector after dynamic balance adjustment; the calculation unit 601 includes a first calculation module 701 and a second calculation module 702.
A first calculating module 701, configured to calculate an absolute value of a difference between the first vibration vector and the second vibration vector;
a second calculating module 702, configured to calculate a ratio of the historical weighted value to the absolute value, so as to obtain an influence parameter.
In one embodiment, the weighting unit 603 is specifically configured to weight the rotating machine according to the to-be-weighted value and the circumference of the historical weighting position.
Referring to fig. 8, the rotary mechanical dynamic balancing apparatus further includes: determination section 801, calculation section 601, and movement section 803.
A determining unit 801, configured to obtain a current vibration value of the rotary machine, and determine whether the current vibration value meets a threshold condition of dynamic balance; when the current vibration value does not satisfy the threshold condition, the calculation unit 601 is further configured to calculate a current counterweight deflection angle of the rotary machine;
and a moving unit 803 for moving the balancing weight circumferentially on the rotating machine according to the current balance weight deflection angle.
Referring to fig. 9, the rotary mechanical dynamic balancing apparatus further includes an acquisition unit 901 and a moving unit 803.
An obtaining unit 901 configured to obtain a current vibration value after the counterweight block is moved;
and a moving unit 803, configured to, when the current vibration value after moving the weight block is increased relative to the current vibration value before moving the weight block, move the weight block on the circumference in the direction opposite to the previous movement of the weight block according to the current weight deflection angle, with the position before moving the weight block as a starting point.
In an embodiment, the calculating unit 601 is further specifically configured to calculate a current counterweight deflection angle according to the original vibration value and the current vibration value.
In order to accurately and efficiently complete dynamic balance adjustment by only using a handheld vibration meter on site under the condition of not measuring a vibration phase influence coefficient according to historical dynamic balance data on a hardware level, the application provides an embodiment of an electronic device for implementing all or part of contents in the rotating machinery dynamic balance method, and the electronic device specifically comprises the following contents:
a Processor (Processor), a Memory (Memory), a communication Interface (Communications Interface), and a bus; the processor, the memory and the communication interface complete mutual communication through the bus; the communication interface is used for realizing information transmission between the rotary mechanical dynamic balance device and relevant equipment such as a core service system, a user terminal, a relevant database and the like; the logic controller may be a desktop computer, a tablet computer, a mobile terminal, and the like, but the embodiment is not limited thereto. In this embodiment, the logic controller may be implemented with reference to the embodiment of the rotating mechanical dynamic balance method and the embodiment of the rotating mechanical dynamic balance device in the embodiment, and the contents thereof are incorporated herein, and repeated descriptions are omitted.
It is understood that the user terminal may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a Personal Digital Assistant (PDA), an in-vehicle device, a smart wearable device, and the like. Wherein, intelligence wearing equipment can include intelligent glasses, intelligent wrist-watch, intelligent bracelet etc..
In practical applications, part of the rotating mechanical dynamic balancing method may be performed on the electronic device side as described above, or all operations may be performed in the client device. The selection may be specifically performed according to the processing capability of the client device, the limitation of the user usage scenario, and the like. This is not a limitation of the present application. The client device may further include a processor if all operations are performed in the client device.
The client device may have a communication module (i.e., a communication unit), and may be communicatively connected to a remote server to implement data transmission with the server. The server may include a server on the task scheduling center side, and in other implementation scenarios, the server may also include a server on an intermediate platform, for example, a server on a third-party server platform that is communicatively linked to the task scheduling center server. The server may include a single computer device, or may include a server cluster formed by a plurality of servers, or a server structure of a distributed apparatus.
Fig. 10 is a schematic block diagram of a system configuration of an electronic device 9600 according to an embodiment of the present application. As shown in fig. 10, the electronic device 9600 can include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. Notably, this fig. 10 is exemplary; other types of structures may also be used in addition to or in place of the structure to implement telecommunications or other functions.
In one embodiment, the rotary mechanical dynamic balancing method functions may be integrated into the central processor 9100. The central processor 9100 may be configured to control as follows:
s101: acquiring historical dynamic balance data of a rotating machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis locations, and vibration vectors.
S102: and acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter.
S103: and weighting the rotating machine according to the magnitude to be weighted and the historical dynamic balance data.
From the above description, the dynamic balance method for the rotary machine, provided by the application, can calculate the influence parameters according to historical dynamic balance data, and can accurately and efficiently complete dynamic balance adjustment by simply calculating and measuring the vibration value only by using a handheld vibration meter on the spot under the condition of not measuring the influence coefficient of the vibration phase.
In another embodiment, the rotating mechanical dynamic balancing apparatus may be configured separately from the central processing unit 9100, for example, the rotating mechanical dynamic balancing apparatus may be configured as a chip connected to the central processing unit 9100, and the functions of the rotating mechanical dynamic balancing method may be implemented by the control of the central processing unit.
As shown in fig. 10, the electronic device 9600 may further include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is noted that the electronic device 9600 also does not necessarily include all of the components shown in fig. 10; in addition, the electronic device 9600 may further include components not shown in fig. 10, which can be referred to in the prior art.
As shown in fig. 10, a central processor 9100, sometimes referred to as a controller or operational control, can include a microprocessor or other processor device and/or logic device, which central processor 9100 receives input and controls the operation of the various components of the electronic device 9600.
The memory 9140 can be, for example, one or more of a buffer, a flash memory, a hard drive, a removable media, a volatile memory, a non-volatile memory, or other suitable device. The information relating to the failure may be stored, and a program for executing the information may be stored. And the central processing unit 9100 can execute the program stored in the memory 9140 to realize information storage or processing, or the like.
The input unit 9120 provides input to the central processor 9100. The input unit 9120 is, for example, a key or a touch input device. Power supply 9170 is used to provide power to electronic device 9600. The display 9160 is used for displaying display objects such as images and characters. The display may be, for example, an LCD display, but is not limited thereto.
The memory 9140 can be a solid state memory, e.g., Read Only Memory (ROM), Random Access Memory (RAM), a SIM card, or the like. There may also be a memory that holds information even when power is off, can be selectively erased, and is provided with more data, an example of which is sometimes called an EPROM or the like. The memory 9140 could also be some other type of device. Memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application/function storage portion 9142, the application/function storage portion 9142 being used for storing application programs and function programs or for executing a flow of operations of the electronic device 9600 by the central processor 9100.
The memory 9140 can also include a data store 9143, the data store 9143 being used to store data, such as contacts, digital data, pictures, sounds, and/or any other data used by an electronic device. The driver storage portion 9144 of the memory 9140 may include various drivers for the electronic device for communication functions and/or for performing other functions of the electronic device (e.g., messaging applications, contact book applications, etc.).
The communication module 9110 is a transmitter/receiver 9110 that transmits and receives signals via an antenna 9111. The communication module (transmitter/receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as in the case of a conventional mobile communication terminal.
Based on different communication technologies, a plurality of communication modules 9110, such as a cellular network module, a bluetooth module, and/or a wireless local area network module, may be provided in the same electronic device. The communication module (transmitter/receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide audio output via the speaker 9131 and receive audio input from the microphone 9132, thereby implementing ordinary telecommunications functions. The audio processor 9130 may include any suitable buffers, decoders, amplifiers and so forth. In addition, the audio processor 9130 is also coupled to the central processor 9100, thereby enabling recording locally through the microphone 9132 and enabling locally stored sounds to be played through the speaker 9131.
Embodiments of the present application further provide a computer-readable storage medium capable of implementing all steps in the rotating machine dynamic balancing method whose execution subject is a server or a client in the above embodiments, where the computer-readable storage medium stores thereon a computer program, and when the computer program is executed by a processor, the computer program implements all steps of the rotating machine dynamic balancing method whose execution subject is a server or a client in the above embodiments, for example, when the processor executes the computer program, the processor implements the following steps:
s101: acquiring historical dynamic balance data of a rotating machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis locations, and vibration vectors.
S102: and acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter.
S103: and weighting the rotating machine according to the magnitude to be weighted and the historical dynamic balance data.
From the above description, the dynamic balance method for the rotary machine, provided by the application, can calculate the influence parameters according to historical dynamic balance data, and can accurately and efficiently complete dynamic balance adjustment by simply calculating and measuring the vibration value only by using a handheld vibration meter on the spot under the condition of not measuring the influence coefficient of the vibration phase.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (14)
1. A method of dynamic balancing a rotating machine, comprising:
acquiring historical dynamic balance data of a rotating machine, and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis positions and vibration vectors;
acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter;
and weighting the rotating machine according to the magnitude to be weighted and the historical dynamic balance data.
2. A method of dynamic balancing of a rotating machine according to claim 1, wherein the vibration vector comprises: a first vibration vector before dynamic balance adjustment and a second vibration vector after dynamic balance adjustment; the calculating of the influence parameters according to the historical dynamic balance data comprises:
calculating an absolute value of a difference between the first vibration vector and the second vibration vector;
and calculating the ratio of the historical weighting value to the absolute value to obtain the influence parameter.
3. The method of claim 1, wherein weighting the rotating machine according to the amount to be weighted and the historical dynamic balance data comprises: and weighting the rotating machine according to the value to be weighted and the circumference of the historical weighting position.
4. The method of claim 3, further comprising, after weighting the rotating machine:
acquiring a current vibration value of the rotary machine, and judging whether the current vibration value meets a threshold condition of dynamic balance;
if not, calculating the current counterweight deflection angle of the rotating machine;
and moving the balancing weight along the circumference on the rotating machine according to the current balancing weight deflection angle.
5. The rotary machine dynamic balancing method of claim 4, wherein the direction of moving the weight along the circumference is clockwise or counterclockwise, and further comprising, after moving the weight along the circumference on the rotary machine according to the current weight deflection angle:
obtaining a current vibration value after the balancing weight is moved;
and if the current vibration value after the counterweight block is moved is increased relative to the current vibration value before the counterweight block is moved, taking the position before the counterweight block is moved as a starting point, and moving the counterweight block on the circumference in the direction opposite to the direction of the previous counterweight block movement according to the current counterweight deflection angle.
6. The rotary machine dynamic balancing method of claim 4, wherein the calculating a current counterweight deflection angle for the rotary machine comprises:
and calculating the current counterweight deflection angle according to the original vibration value and the current vibration value.
7. A rotary machine dynamic balancing apparatus, comprising:
the calculating unit is used for acquiring historical dynamic balance data of the rotary machine and calculating influence parameters according to the historical dynamic balance data; the historical dynamic balance data comprises: historical emphasis values, historical emphasis positions and vibration vectors;
the generating unit is used for acquiring an original vibration value of the rotary machine and generating a to-be-weighted magnitude value according to the original vibration value and the influence parameter;
and the weighting unit is used for weighting the rotating machine according to the value of the to-be-weighted amount and the historical dynamic balance data.
8. A rotary machine dynamic balancing device according to claim 7, wherein the vibration vector comprises: a first vibration vector before dynamic balance adjustment and a second vibration vector after dynamic balance adjustment; the calculation unit includes:
a first calculation module for calculating an absolute value of a difference between the first vibration vector and the second vibration vector;
and the second calculation module is used for calculating the ratio of the historical weighting value to the absolute value to obtain the influence parameter.
9. The dynamic balancing apparatus of claim 7, wherein the weighting unit is specifically configured to weight the rotating machine according to the amount of weight to be weighted and a circumference on which the historical weighting positions are located.
10. A rotary machine dynamic balancing device according to claim 9, further comprising:
the judging unit is used for acquiring the current vibration value of the rotary machine and judging whether the current vibration value meets the threshold condition of dynamic balance or not; when the current vibration value does not meet the threshold condition, the calculation unit is further configured to calculate a current counterweight deflection angle of the rotary machine;
and the moving unit is used for moving the balancing weight along the circumference on the rotating machine according to the current balancing weight deflection angle.
11. A rotary machine dynamic balancing apparatus according to claim 10, further comprising:
the acquisition unit is used for acquiring a current vibration value after the balancing weight is moved; and the moving unit is also used for moving the balancing weight on the circumference in the direction opposite to the direction of moving the balancing weight last time according to the current balancing weight deflection angle by taking the position before the balancing weight is moved as a starting point when the current vibration value after the balancing weight is moved is increased relative to the current vibration value before the balancing weight is moved.
12. A rotary machine dynamic balancing apparatus according to claim 10, wherein the calculating unit is further configured to calculate the current counterweight deflection angle based on an original vibration value and a current vibration value.
13. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the rotating machine dynamic balancing method according to any one of claims 1 to 6 are implemented when the program is executed by the processor.
14. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the rotating machine dynamic balancing method of any one of claims 1 to 6.
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