CN110967203A - Failure detection apparatus, failure detection method, computer-readable storage medium, and computing apparatus - Google Patents
Failure detection apparatus, failure detection method, computer-readable storage medium, and computing apparatus Download PDFInfo
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- CN110967203A CN110967203A CN201811148293.2A CN201811148293A CN110967203A CN 110967203 A CN110967203 A CN 110967203A CN 201811148293 A CN201811148293 A CN 201811148293A CN 110967203 A CN110967203 A CN 110967203A
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- 238000001514 detection method Methods 0.000 title claims abstract description 91
- 238000012545 processing Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000005855 radiation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
Abstract
The invention provides a failure detection device and method, a computer readable storage medium and a computing device, wherein a radiator comprises a plurality of fins which are arranged on a shaft system along the circumferential direction of the shaft system, and the failure detection device comprises: an engagement detection unit having a gear engaged with the plurality of fins and a detection unit that detects a rotational speed of the gear; a processing unit configured to determine whether the radiator is failed based on the rotation speed of the gear detected by the detection portion. The failure detection device and the failure detection method are convenient for maintenance personnel to maintain the radiator on the shafting in time, and the service life of the shafting is prolonged.
Description
Technical Field
The present application relates to the field of transmissions, and more particularly, to a failure detection apparatus and method for a heat sink of a shafting, a computer-readable storage medium, and a computing apparatus.
Background
If the bearing works for a long time under the non-design condition (for example, the design working temperature is exceeded), the inner ring of the bearing can expand by heat, so that the bearing play is reduced, the pretightening force is increased, and the service life of the bearing is greatly shortened.
Especially for bearings of large components, the design life of a wind turbine generator system is about 20 years, and the life of a main bearing of the wind turbine generator system including the bearing needs to be at least 20 years on the premise of not replacing the components. If the heat dissipation effect of the bearing of the wind generating set is poor, the lubricating oil of the bearing is accelerated to deteriorate due to the high temperature generated by the bearing, and the service life of the bearing is shortened. If the lubricating oil is not replaced in time, the lubricating effect of the bearing is rapidly reduced, and the bearing is finally damaged.
The heat radiator comprising a plurality of fins is additionally arranged on the inner wall of the shaft system, so that the heat exchange area between the shaft system and the ambient air can be increased, the heat of the shaft system is radiated, and the temperature of the bearing is reduced.
The fins are generally fixed to the shaft system by bolts, glue, or the like, and in any fixing method, there is a risk of deformation (tooth folding), accumulation of dirt, and falling-off of the fins.
There is currently no apparatus and method for efficiently testing a heat sink comprising a plurality of fins in a shafting.
Disclosure of Invention
One of the objectives of the present invention is to provide an apparatus and method for determining if a heat sink of a shafting system is failed.
According to an aspect of the present invention, a failure detection apparatus of a heat sink of a shaft system, the heat sink may include a plurality of fins installed on the shaft system in a circumferential direction of the shaft system, and the failure detection apparatus may include: an engagement detection unit having a gear engaged with the plurality of fins and a detection unit that detects a rotational speed of the gear; a processing unit configured to determine whether the radiator is failed based on the rotation speed of the gear detected by the detection portion.
According to an embodiment of the present invention, the engagement detecting unit may further include: a drive shaft, a gear coupled to a first end of the drive shaft; a first bearing supporting the second end of the drive shaft; and a housing in which the first bearing is accommodated, the detection portion being mounted in the housing.
According to an embodiment of the present invention, the detection part may include a magnet provided on one of the transmission shaft and an inner wall of the housing, and a coil provided on the other of the transmission shaft and the inner wall of the housing, the magnet and the coil facing each other when the shaft system is rotated to a predetermined position.
According to an embodiment of the invention, the failure detection device may further comprise a sensing unit detecting a rotational speed of the shafting, the processing unit being further configured to: when the ratio of the rotation speed of the shafting to the rotation speed of the gear is within a preset range, the processing unit determines that the radiator is not failed; the processing unit determines that the heat sink is disabled when a ratio of a rotational speed of the shafting to a rotational speed of the gear exceeds a predetermined range.
According to an embodiment of the present invention, the failure detection device may further include a rotary encoder that encodes mounting positions of the plurality of fins on the shaft system and matches a position of each fin with a rotational speed of the gear and a rotational speed of the shaft system, respectively, detected when the gear passes through the position.
According to an embodiment of the invention, the processing unit may be further configured to: and when the ratios detected at different times at the same position where the gear is meshed with the fins exceed a preset range, the processing unit determines that the radiator fails.
According to the embodiment of the invention, when the variation curve of the ratio of the rotation speed of the shafting to the rotation speed of the gear along with the position variation of each fin is not matched with the pre-stored variation curve, the processing unit can determine that the radiator is failed; when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear with a change in the position of each fin matches a pre-stored variation curve, the processing unit may determine that the heat sink is not failed.
According to an embodiment of the present invention, the failure detection device may further include a pressure sensor mounted on the drive shaft to sense a pressure of the fin against the drive shaft or the gear, the processing unit being further configured to: when the pressure is greater than or equal to a first predetermined value, it is determined that the fin is deformed.
According to an embodiment of the invention, the processing unit may be further configured to: determining that the fin falls off when the pressure is less than or equal to a second predetermined value; when the pressure is greater than the second predetermined value and less than the first predetermined value, it is determined that there is a foreign matter between the fins.
According to the embodiment of the invention, the radiator can comprise an arc-shaped part, the arc-shaped part is attached to the inner wall of the shaft system, and the plurality of fins are radially arranged on the arc-shaped part and point to the center of the shaft system.
According to the embodiment of the invention, the plurality of fins may be uniformly arranged on the inner wall of the shaft system in the circumferential direction of the shaft system, or the heat sink includes a plurality of fin modules, each fin module includes fins of equal number, the plurality of fin modules are uniformly arranged on the inner wall of the shaft system, and the distance between two adjacent fin modules is greater than the distance between two adjacent fins in the fin module.
According to another aspect of the present invention, a method for detecting a failure of a heat sink of a shaft system, the heat sink including a plurality of fins mounted on the shaft system in a circumferential direction of the shaft system, may include: detecting a rotational speed of a gear engaged with the plurality of fins; whether the radiator fails is determined based on the rotation speed of the gear.
According to an embodiment of the present invention, the failure detection method may further include detecting a rotation speed of the shafting, and the determining whether the radiator is failed based on the rotation speed of the gear includes: determining that the radiator is not failed when a ratio of a rotational speed of the shafting to a rotational speed of the gear is within a predetermined range; and when the ratio of the rotation speed of the shafting to the rotation speed of the gear exceeds a preset range, determining that the radiator is failed.
According to an embodiment of the invention, the step of determining the failure of the heat sink may comprise: and when the ratios detected at different times at the same position where the gear is meshed with the fin exceed a preset range, determining that the radiator is invalid.
According to an embodiment of the present invention, the failure detection method may further include detecting a rotation speed of the shafting, and the determining whether the radiator is failed based on the rotation speed of the gear includes: when a variation curve of the ratio of the rotation speed of the shafting to the rotation speed of the gear along with the position variation of each fin is not matched with a pre-stored variation curve, determining that the radiator fails; when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear with a change in the position of each fin matches a pre-stored variation curve, it is determined that the heat sink is not failed.
According to an embodiment of the invention, the failure detection method may further comprise sensing a pressure of the fin against the gear, the step of determining the failure of the heat sink comprising: when the pressure is greater than or equal to a first predetermined value, it is determined that the fin is deformed.
According to the embodiment of the present invention, when the pressure is less than or equal to the second predetermined value, it may be determined that the fin is fallen; when the pressure is greater than the second predetermined value and less than the first predetermined value, it may be determined that there is foreign matter between the fins.
According to another aspect of the present invention, a computer readable storage medium stores a computer program which, when executed by a processor, causes the processor to perform the above-described method.
According to another aspect of the invention, a computing device comprises: a processor; a memory for storing a computer program which, when executed by the processor, causes the processor to perform the above method.
The failure detection device and the failure detection method are convenient for maintenance personnel to maintain the radiator on the shafting in time, and the service life of the shafting is prolonged.
Drawings
A full understanding of the present invention will be gained by those skilled in the art from the following detailed description of exemplary embodiments of the invention when considered in connection with the accompanying drawings, wherein:
fig. 1 is a schematic view illustrating a heat sink according to an embodiment of the present invention.
Fig. 2 is a schematic view showing a mounting manner of a heat sink according to an embodiment of the present invention.
Fig. 3 is a schematic view showing another installation manner of the heat sink according to the embodiment of the present invention.
Fig. 4 and 5 are schematic views showing the manner of mounting the failure detection device according to the embodiment of the present invention.
FIG. 6 is a flow chart illustrating a failure detection method according to an embodiment of the present invention.
The reference numbers illustrate:
10: a fin; 20: a main bearing; 23: a bearing inner race; 21: fixing a shaft; 22: a moving shaft; 50: an engagement detection unit; 51: a gear; 52: a drive shaft; 53: a housing.
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.
According to an embodiment of the invention, the failure detection device may be used for detecting the effectiveness of a radiator on a shafting, preferably for detecting the effectiveness of a radiator on a shafting of a wind turbine generator system comprising a main bearing. The invention utilizes the gear engagement mode to determine whether the radiator fails. This concept will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view illustrating a heat sink according to an embodiment of the present invention. Fig. 2 is a schematic view showing a mounting manner of a heat sink according to an embodiment of the present invention. Fig. 3 is a schematic view showing another installation manner of the heat sink according to the embodiment of the present invention.
As shown in fig. 1 and 2, the lower end of the heat sink may have an arc shape, and the lower end of the heat sink may be an arc-shaped member that may match the arc shape of the inner wall or surface of the shafting. The heat sink may be attached to the inner surface of the shaft and the upper end of the heat sink may be radial and directed towards the center of the shaft to form the fins 10.
A heat sink according to an embodiment of the present invention is mounted on the axle train. For example, the heat sink may be mounted on the axle system by bolts or glued to the axle system.
The shafting may include a main bearing 20, and the main bearing 20 may include a movable shaft 22, a fixed shaft 21, and bearing rollers connected to the movable shaft 22 and the fixed shaft 21, respectively.
As shown in fig. 2, the heat sink may be mounted on an inner wall or surface of the shafting, for example, on an inner wall or surface of the shaft 22 of the shafting. Alternatively, the heat sink may be mounted on the outer wall or surface of the shafting, in which case, for example, the heat sink may be mounted on the outer wall or surface of the fixed shaft 21 of the shafting. The fixed shaft 21 may be connected with a bearing outer race (not shown), and the movable shaft 22 may be connected with a bearing inner race 23. The installation position of the radiator is not particularly limited as long as the heat of the shafting can be effectively radiated.
As shown in fig. 2 and 3, the heat sink may include a plurality of fins 10 mounted on the shaft system, the plurality of fins 10 may be stacked on each other, and the plurality of fins 10 may be uniformly arranged on the inner surface of the shaft system in the circumferential direction of the shaft system. This increases the contact area between the radial fins 10 and the air, and thus effectively dissipates heat from the shafting, thereby reducing the temperature of the main bearing 20.
The adjacent two fins 10 may be arranged substantially in parallel, or the distance between the adjacent two fins 10 gradually decreases from the bottom (lower portion or root, i.e., the side in contact with the arc) of the fin 10 to the upper end (i.e., top or tip) of the fin 10, specifically, in the case where the fins 10 are arranged uniformly on the shaft system, the arc length of a circle between the adjacent two fins is equal or substantially equal in the case where the circle having a radius of an arbitrary value from the center of the shaft system intersects each fin.
Each of the fins 10 may have the same size and material, and may have a substantially rectangular shape, and the fins 10 may be made of a material having a superior heat dissipation effect.
In a normal case (the heat sink is not failed), the distance between the adjacent two fins 10 is the same or substantially the same, or the distance in the circumferential direction of the shaft system at the same position of the adjacent two fins 10 is the same, for example, in a normal case (for example, the heat sink is effective), the distance between the ends (the ends extending toward the center of the shaft system) of each fin 10 is the same.
As shown in fig. 3, the heat sink may include a plurality of fin modules, each of which may include equal or different numbers of fins, the fin modules may be uniformly arranged on the inner surface of the shaft system, and in a case where the heat sink is effective, a spacing between adjacent two fin modules may be greater than a spacing between adjacent two fins in the fin modules. Each fin module may be arranged on the shaft system, for example, each fin module may be arranged on the shaft system uniformly in a circumferential direction of the shaft system.
According to an embodiment of the present invention, the failure detection means may include an engagement detection unit 50 and a processing unit (not shown).
The engagement detecting unit 50 may have a gear 51 engaged with the fin 10 and a detecting portion detecting a rotational speed of the gear 51, and the processing unit may determine whether the heat sink is failed based on the rotational speed of the gear detected by the detecting portion. In the present invention, the rotation speed may refer to a rotation speed or an angular speed.
For example, when the rotational speed of the gear detected by the detection portion is not significantly abruptly changed, the processing unit may determine that the radiator is not failed. In addition, if the heat sink includes a plurality of fin modules, the processing unit may determine whether the abrupt change in the rotational speed based on the gear has a continuous periodic variation, and if there is a periodic variation, the processing unit may exclude a case where the abrupt change in the rotational speed of the gear detected by the detection portion is caused by a gap between the plurality of gear modules.
Of course, the installation positions of the fin modules may also be marked in advance to exclude in advance the influence of the determination of the gap between each fin module resulting in an abrupt change in the rotation speed of the gear, thereby preventing the occurrence of false reports or misinformation, which will be described in detail below.
Fig. 4 and 5 are schematic views showing the manner of mounting the failure detection device according to the embodiment of the present invention.
As shown in fig. 4 and 5, the engagement detecting unit 50 may further include a transmission shaft 52, a first bearing (not shown) and a housing 53, the gear 51 may be coupled to (e.g., fitted over) a first end of the transmission shaft 52, the first bearing may support a second end of the transmission shaft 52, e.g., an inner race of the first bearing may be fixed on the transmission shaft 52, the gear 51 rotates the transmission shaft 52, the transmission shaft 52 may rotate the inner race of the first bearing, and an outer race of the first bearing may be installed in the housing 53 (e.g., a square housing).
The housing 53 may house the first bearing and the second end of the transmission shaft 52, and a detection portion that detects the rotation speed of the gear 51 may be installed in the housing 53. In addition, the rotation speed of the gear 51 may also be detected by an optical detection means, for example, a light emitting unit may be mounted on the gear 51, and a light receiving unit may be fixedly mounted near the light emitting unit, the light receiving unit may receive light emitted from the light emitting unit when the gear 51 rotates to a predetermined position, and the rotation speed of the gear 51 may be calculated by calculating the frequency of the light received by the light receiving unit.
Therefore, the transmission shaft, the housing, the first bearing, and the like of the present invention may be replaced as long as the rotational speed of the gear 51 engaged with the fin 10 can be detected. In the present invention, the first bearing rotation means rotation of an outer ring or an inner ring of the first bearing.
The engagement detection unit 50 may be disposed facing the fin 10, for example, the transmission shaft 52 may be disposed in a radial direction of a moving shaft of the shaft line. As shown in fig. 4, the gear 51 may be engaged with the fin 10 at a side portion of an upper end of the fin 10, and the housing 53 may be located substantially at a center of the shaft line.
Alternatively, the engagement detecting unit 50 may be disposed at a side of the fin 10 extending toward the center of the shaft line, that is, the transmission shaft 52 of the engagement detecting unit 50 may be disposed in parallel with the center axis of the shaft line, and the gear 51 may be rotated in the same direction as the rotation direction of the fin 10 at the upper end of the fin 10.
Preferably, the fin 10 can rotate around the center of the shaft system, and the fin 10 only needs to rotate relatively with respect to the engagement detection unit 50 (for example, the housing 53 of the engagement detection unit 50). Preferably, the housing 53 of the engagement detection unit 50 is stationary and the fin 10 is rotationally moved about the center of the shaft line.
As shown in fig. 5, the transmission shaft 52 may be arranged in a radial direction of the moving shaft 22 of the shafting. The gear 51 may be engaged with the fin 10 at the side of the fin 10. Since the gear 51 and the fin 10 have the same linear velocity, the ratio of the rotational speed (angular velocity or rotational speed) of the fin 10 to the rotational speed (angular velocity or rotational speed) of the gear 51 is equal to the ratio of the radius of the gear 51 to the distance between the upper end of the fin 10 and the center of the shaft system (e.g., the moving shaft).
In other words, the ratio of the rotation speed (rotation speed or angular velocity) of the fin 10 to the rotation speed (rotation speed or angular velocity) of the gear 51 is a constant, which may be determined by the size of the shafting, the size of the fin 10, and the size of the gear 51. Alternatively, the ratio of the rotational speed (rotational speed or angular velocity) of the fin 10 to the rotational speed of the gear 51 may also be varied within an error allowable range.
Specifically, the processing unit may determine that the heat sink is not failed when a ratio of the rotational speed (rotational speed or angular speed) of the shafting or the fins 10 to the rotational speed (rotational speed or angular speed) of the gear is within a predetermined range, and may determine that the heat sink is failed when the ratio of the rotational speed of the shafting to the rotational speed of the gear is out of the predetermined range.
Here, the rotational speed of the gear 51 may be measured by a detection portion such as various sensors. Preferably, in the case where the detection part is installed in the housing 53, the detection part may include a magnet and a coil, the magnet may be provided on one of the transmission shaft 52 and the inner wall of the housing 53, and the coil may be provided on the other of the transmission shaft 52 and the inner wall of the housing 53.
For example, a magnet may be mounted on the transmission shaft 52, and a coil may be fixedly mounted on the inner surface of the housing 53 and may face the magnet with each other. When the shaft system rotates the fin 10 to a predetermined position, the magnet and the coil face each other, and a current is induced in the coil by a change in the magnetic field caused by the movement of the magnet, whereby the detection portion can determine the rotational speed (rotational speed or angular velocity) or the like of the gear 51.
According to an embodiment of the present invention, the failure detection device may further include a sensing unit (e.g., a rotational speed sensor) that detects a rotational speed of the shafting, and the sensing unit may be installed on the shafting or at any position around the shafting as long as it can detect the rotational speed of the shafting, which in this application refers to the rotational speed of the moving shaft.
Of course, the rotation speed of the shaft system can also be detected in a manner similar to the detection manner (magnets and coils) of the gear 51, and the processing unit can also directly read the real-time rotation speed of the shaft system or the fins 10 from the main control system.
In addition, according to an embodiment of the present invention, the failure detection device may further include a rotary encoder, which may encode the installation positions of the plurality of fins 10 on the shaft system, and may be configured to match the position of each fin 10 with the detected rotation speed of the gear 51 and the rotation speed of the shaft system, respectively. That is, a curve of the rotation speed as a function of the position of the fin can be obtained.
For example, the rotary encoder may select one fin 10 of the plurality of fins 10 as a reference fin or a zero-degree-angle fin, and then mark the installation angle of each of the other fins 10 with the fin as a reference, for example, one fin may be installed at every predetermined interval (e.g., 5 degrees), or one fin module may be installed at every 10 degrees. Thereby, it is also possible to obtain a variation curve in which the ratio of the rotation speed of the shafting to the rotation speed of the gear changes with the position of each fin, and the processing unit may compare the variation curve with a previously stored variation curve detected in a state where the radiator is not failed, and determine whether the radiator is failed based on the comparison result.
Alternatively, the processing unit may determine that the heat sink is failed when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear 51 with a change in the position of each fin does not match a pre-stored variation curve. Conversely, when the variation curve of the ratio of the rotation speed of the shafting to the rotation speed of the gear 51 with the change in the position of each fin matches the variation curve stored in advance, the processing unit may determine that the heat sink is not failed. "match" herein may mean that the two profiles are identical, have the same trend of change, the ratio of the peaks in the two profiles is in the range of 0.9 to 1.1, etc.
In the case where the rotary encoder is provided, the accuracy of the comparison result can be improved, and the specific position of the failed fin can be further determined in the case where it is determined that the heat sink has failed.
The processing unit may determine that the radiator is out of order when the above-mentioned ratios detected or determined at different times at the same position where the gear 51 meshes with the fin 10 are all out of the above-mentioned predetermined range. For example, the processing unit may determine that the heat sink is failed when the ratio of two consecutive detections or determinations exceeds the above-mentioned predetermined range during rotation of the shaft system or the fin 10.
As described above, since the ratio of the rotation speed of the shafting to the rotation speed of the gear 51 is constant, the above determination method does not require that the variation curves of the two measurements are performed under the condition that the shafting or the fins 10 have the same rotation speed, and thus, the influence of the external environment is relatively small.
Here, the processing unit may be a processor, and may be implemented by an integrated IC. In the case where the heat sink is attached to the moving shaft of the shafting, the housing 53 and the like of the engagement detecting unit 50 may be fixedly attached to the fixed shaft, and in the case where the heat sink is attached to the fixed shaft of the bearing, the housing and the like of the engagement detecting unit 50 may be fixedly attached to the moving shaft. The processing unit may be a processor in a master control system of the wind park.
Preferably, the failure detection device of the present invention may further include a pressure sensor, which may be mounted on the transmission shaft 52 and may sense the pressure or the change of pressure of the fin 10 to the transmission shaft 52 or the gear 51.
For example, when the fin 10 is deformed, the fin 10 cannot be effectively meshed with the gear 51, so that the pressure of the fin 10 on the gear 51 is increased, and at this time, the pressure sensed by the pressure sensor is significantly increased, and accordingly, the processing unit can further judge the type of the heat sink failure based on the magnitude of the pressure sensed by the pressure sensor, so that the accuracy of the judgment can be improved.
In addition, when the fin 10 is dropped, the gear 51 cannot mesh with the fin 10, the rotation speed of the gear 51 abruptly changes (for example, decreases), and the processing unit may determine that the fin (heat radiation fin) of the heat sink is dropped based on the rotation speed of the gear, the rotation speed of the transmission shaft, or the rotation speed of the first bearing becoming smaller.
In particular, the processing unit may determine that the heat sink is failed, for example, a fin of the heat sink is deformed, when the pressure detected by the pressure sensor is greater than or equal to a first predetermined value.
The processing unit may determine that the fin is detached when the pressure sensed by the pressure sensor is less than or equal to a second predetermined value. The processing unit may determine that there is foreign matter between the fins of the heat sink when the pressure sensed by the pressure sensor is greater than a second predetermined value and less than a first predetermined value.
The first predetermined value, the second predetermined value, the predetermined range and the like can be predetermined according to the fin structure, the heat dissipation requirement and the like, and can also be changed within a certain range according to actual needs.
As described above, in the case where the heat sink includes a plurality of fin modules, the mounting positions of the fin modules may be marked in advance, and for example, the mounting positions of each of the fin modules may be marked by a rotary encoder, whereby a case where a gap between each of the fin modules causes an abrupt change in the rotation speed of the gear may be excluded in advance, or the processing unit may judge whether the abrupt change caused by the fin falling or deformation is the same as the abrupt change caused by the gap between the fin modules, thereby preventing the occurrence of false alarm or misinformation. The position of the fin or the code corresponding to the position of the fin when the sudden change occurs can be recorded, the position of the fin or the code corresponding to the position of the fin when the sudden change occurs is searched in a pre-stored table of codes corresponding to the fin module intervals, if the position or the code of the fin is searched in the table, the processing unit can determine that the radiator does not fail, otherwise, the processing unit can determine that the radiator fails. Here, the storage function, the table, and the like may be implemented by software.
Moreover, the processing unit can output an output signal indicating a judgment result after determining whether the radiator fails, the processing unit can be connected to components such as an alarm and the like, and the output signal can control the alarm to give an alarm so as to remind maintenance personnel to perform timely maintenance and the like.
The invention provides a method for determining whether a heat sink fails by using the influence of deformation or falling off of fins on rotation of a gear.
The failure detection method of the present invention may perform various steps using the above-described failure detection device, and may also perform the following various steps using other detection devices.
The failure detection method of the present invention may include the steps of:
s100: the rotational speed of the gear engaged with the fin is detected.
S200: whether the radiator fails is determined based on the rotation speed of the gear.
For example, whether the radiator fails may be judged based on a real-time variation curve of the rotation speed of the gear. Whether the radiator fails or not can be judged specifically based on whether the real-time change curve of the rotating speed is suddenly changed or not, whether the real-time change curve is matched with the pre-stored rotating speed change curve in the normal state or not and the like.
Note that the real-time variation profile of the rotational speed here and the rotational speed variation profile in the normal state stored in advance are preferably detected at the same relative speed (for example, the shafting rotational speed is the same) so as to have the same reference basis. If the detection is performed at different relative speeds, the corresponding judgment can be made based on the variation trend of the waveform (for example, whether the position or time at which the abrupt change occurs is the same).
The failure detection method of the present invention may further include:
s110: detecting the rotation speed of the shafting, where the step of detecting the rotation speed of the shafting may be performed simultaneously or in parallel with the step S100 of detecting the rotation speed of the gear, determining whether the radiator is failed based on the rotation speed of the gear.
As described above, the rotation speed of the shafting can be detected by a rotation speed sensor or the like, or can be directly read from the main control system.
S200 may specifically include S210: determining that the heat sink is not failed when a ratio of a rotational speed of the shafting (or the fins) to a rotational speed of the gear is within a predetermined range; when the ratio of the rotational speed of the shafting to the rotational speed of the gear exceeds the predetermined range, it is determined that the radiator is out of order.
Preferably, the step of determining whether the heat sink is failed may include: and when the variation curve of the ratio of the rotation speed of the shafting to the rotation speed of the gear along with the position variation of each fin is matched with the prestored variation curve, determining that the radiator is not failed.
According to the failure detection method provided by the embodiment of the invention, whether the radiator fails or the type of the radiator failure can be further judged based on the pressure of the fins on the gear.
The failure detection method of the present invention may further comprise the step of sensing the pressure of the fins against the gear, and the step of determining the failure of the heat sink may comprise: determining that the fin is deformed when the sensed pressure is greater than or equal to a first predetermined value; determining that the fin falls off when the pressure is less than or equal to a second predetermined value; otherwise, it is determined that there is a foreign matter between the fins. This will be described in detail below with reference to fig. 6.
FIG. 6 is a flow chart illustrating a failure detection method according to an embodiment of the present invention.
In step S70, the rotation speed V1 of the gear engaged with the fin is detected.
In step S71, the rotation speed V2 of the shafting is detected, and the rotation speed of the rotating shaft may be acquired by various means, for example, by a rotation speed sensor.
In step S72, the fin-to-gear pressure F is sensed.
Steps S70 to S72 may be performed simultaneously or in parallel, and the order of steps S70 to S71 may be interchanged with each other.
In step S73, it is determined whether the ratio of the rotational speed V2 of the shafting or fins to the rotational speed V1 of the gears is within a predetermined range [ C1, C2 ].
If V2/V1 is within the predetermined range, it is determined at step S74 that the radiator has not failed. Otherwise, the radiator is determined to be invalid, and when the ratios detected at different times at the same position where the gear is meshed with the fin exceed the preset range, the radiator can be determined to be invalid. In addition, the type of heat sink failure may be further determined. For example, it may be further determined whether the pressure F is greater than or equal to a first predetermined value F1 at step S75, and if the pressure F is greater than or equal to a first predetermined value F1, it is determined that the fins of the heat sink are deformed at step S76.
If it is determined at step S77 that the pressure F is less than or equal to the second predetermined value F2, it is determined at step S78 that the fins are detached, otherwise, it is determined at step S79 that there is foreign matter between the fins.
The failure detection method according to an embodiment of the present invention may be written as a computer program, and corresponding computer program instructions, which when executed by a processor, perform the failure detection method of the present invention, may be stored in a memory, such as a computer-readable recording storage medium.
Examples of the computer readable storage medium may include magnetic storage media (e.g., ROM, RAM, floppy disks, hard disks, etc.) and optical recording media (e.g., CD-ROMs, DVDs, etc.). The computer readable storage medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. A computing device according to an embodiment of the invention may comprise the above-mentioned memory for storing computer program instructions or code which, when executed by the processor, causes the processor to perform the failure detection method of the invention.
The failure detection device and the failure detection method can detect and judge whether the radiator on the shafting is failed or not.
The failure detection device and the failure detection method are convenient for maintenance personnel to maintain the radiator on the shafting in time, and the service life of the shafting is prolonged.
According to the failure detection device and the failure detection method provided by the embodiment of the invention, the normal operation of the wind generating set can be ensured.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and the same and similar parts between the embodiments may be referred to each other.
Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (19)
1. A failure detection device of a heat sink of a shaft system, the heat sink including a plurality of fins (10) mounted on the shaft system in a circumferential direction of the shaft system, the failure detection device comprising:
an engagement detection unit (50), wherein the engagement detection unit (50) is provided with a gear (51) engaged with the plurality of fins (10) and a detection part for detecting the rotation speed of the gear (51);
a processing unit configured to determine whether the radiator is failed based on the rotational speed of the gear (51) detected by the detection portion.
2. The failure detection device of a heat sink of a shafting according to claim 1, wherein said engagement detection unit (50) further comprises:
a transmission shaft (52), the gear (51) being coupled to a first end of the transmission shaft (52);
a first bearing supporting a second end of the drive shaft (52);
a housing (53), the first bearing being housed in the housing (53), the detection portion being mounted within the housing (53).
3. The failure detection device of a heat sink of a shafting according to claim 2, wherein said detection portion comprises a magnet provided on one of said transmission shaft (52) and an inner wall of said housing (53) and a coil provided on the other of said transmission shaft (52) and an inner wall of said housing (53), said magnet and said coil facing each other when said shafting is rotated to a predetermined position.
4. The failure detection device of a heat sink of a shafting according to claim 2, further comprising a sensing unit to detect a rotation speed of said shafting, said processing unit being further configured to:
when the ratio of the rotational speed of the shafting to the rotational speed of the gear (51) is within a predetermined range, the processing unit determines that the radiator is not failed;
the processing unit determines that the radiator is out of order when a ratio of a rotational speed of the shafting to a rotational speed of the gear (51) exceeds the predetermined range.
5. The failure detection device of a heat sink of a shafting according to claim 4, further comprising a rotary encoder for encoding the installation position of a plurality of said fins (10) on said shafting and matching the position of each fin (10) with the rotation speed of said gear (51) and the rotation speed of said shafting detected when said gear (51) passes through said position, respectively.
6. The shafting heat sink failure detection apparatus of claim 5, wherein the processing unit is further configured to:
when the ratios detected at different times at the same position where the gear (51) is meshed with the fin (10) exceed the preset range, the processing unit determines that the radiator is failed.
7. The failure detection device for a heat sink of a shafting according to claim 5,
when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear (51) with the position variation of each fin (10) does not match a pre-stored variation curve, the processing unit determines that the radiator is failed;
when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear (51) with a change in the position of each fin (10) matches a pre-stored variation curve, the processing unit determines that the heat sink is not failed.
8. The failure detection device of a heat sink of a shafting according to claim 4, further comprising a pressure sensor mounted on said drive shaft (52) to sense the pressure of said fin (10) against said drive shaft (52) or gear (51),
the processing unit is further configured to: determining that the fin (10) is deformed when the pressure is greater than or equal to a first predetermined value.
9. The shafting heat sink failure detection apparatus of claim 8, wherein the processing unit is further configured to:
determining that the fin (10) is detached when the pressure is less than or equal to a second predetermined value;
when the pressure is greater than a second predetermined value and less than a first predetermined value, it is determined that there is a foreign matter between the fins (10).
10. The shafting radiator failure detection device as claimed in claim 1, wherein the radiator comprises an arc-shaped member, the arc-shaped member is attached to the inner wall of the shafting, and the plurality of fins (10) are radially arranged on the arc-shaped member and point to the center of the shafting.
11. The failure detection device of a heat sink of a shaft system as claimed in claim 10, wherein the plurality of fins (10) are uniformly arranged on the inner wall of the shaft system along the circumferential direction of the shaft system, or
The radiator comprises a plurality of fin modules, each fin module comprises fins (10) with the same number, the fin modules are uniformly arranged on the inner wall of the shaft system, and the distance between every two adjacent fin modules is larger than the distance between every two adjacent fins (10) in the fin modules.
12. A failure detection method of a radiator of a shafting, the radiator including a plurality of fins (10) mounted on the shafting in a circumferential direction of the shafting, the failure detection method comprising:
detecting a rotational speed of a gear (51) engaged with the plurality of fins (10);
determining whether the radiator is failed based on a rotation speed of the gear (51).
13. The method of claim 12, further comprising detecting a rotational speed of the shafting,
the step of determining whether the radiator is failed based on the rotation speed of the gear (51) includes:
determining that the radiator is not failed when a ratio of a rotational speed of the shafting to a rotational speed of the gear (51) is within a predetermined range;
determining that the radiator is out of order when a ratio of a rotational speed of the shafting to a rotational speed of the gear (51) exceeds the predetermined range.
14. The method for detecting the failure of a heat sink of a shafting according to claim 13,
the step of determining that the heat sink is malfunctioning comprises:
when the ratios detected at different times at the same position where the gear (51) is meshed with the fin (10) exceed the preset range, determining that the heat radiator is failed.
15. The method of claim 12, further comprising detecting a rotational speed of the shafting,
the step of determining whether the radiator is failed based on the rotation speed of the gear (51) includes:
determining that the radiator is out of order when a variation curve of a ratio of a rotation speed of the shafting to a rotation speed of the gear (51) with a change in position of each fin (10) does not match a pre-stored variation curve;
when a variation curve of a ratio of the rotation speed of the shafting to the rotation speed of the gear (51) with a change in the position of each fin (10) matches a pre-stored variation curve, it is determined that the heat sink is not failed.
16. The failure detection method of a heat sink of a shafting according to claim 13, further comprising sensing a pressure of said fin (10) against said gear (51),
the step of determining that the heat sink is malfunctioning comprises: determining that the fin (10) is deformed when the pressure is greater than or equal to a first predetermined value.
17. The method for detecting the failure of a heat sink of a shafting according to claim 16,
determining that the fin (10) is detached when the pressure is less than or equal to a second predetermined value;
when the pressure is greater than a second predetermined value and less than a first predetermined value, it is determined that there is a foreign matter between the fins (10).
18. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, causes the processor to perform the method according to any one of claims 12 to 17.
19. A computing device, comprising:
a processor;
a memory for storing a computer program that, when executed by the processor, causes the processor to perform the method of any of claims 12 to 17.
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| CN201811148293.2A CN110967203B (en) | 2018-09-29 | 2018-09-29 | Failure detection apparatus, failure detection method, computer-readable storage medium, and computing apparatus |
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| CN201811148293.2A CN110967203B (en) | 2018-09-29 | 2018-09-29 | Failure detection apparatus, failure detection method, computer-readable storage medium, and computing apparatus |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006029486A (en) * | 2004-07-20 | 2006-02-02 | Daihatsu Motor Co Ltd | Cooling device for belt type continuously variable transmission |
| CN1919489A (en) * | 2005-08-23 | 2007-02-28 | 余金盘 | Process equipment for integral ring-shaped finned tube and technique thereof |
| JP3946875B2 (en) * | 1998-07-07 | 2007-07-18 | 日高精機株式会社 | Fins for heat exchanger |
| WO2012042278A2 (en) * | 2010-10-01 | 2012-04-05 | Ets Design Ltd. | Electromechanical device |
| CN103088575A (en) * | 2011-11-08 | 2013-05-08 | 荆旭东 | Double-speed internal jetting flashy flow efficient washing roller |
| CN104612969A (en) * | 2015-01-29 | 2015-05-13 | 珠海思齐电动汽车设备有限公司 | Double screw air compressor set for pure power-driven bus |
| EP2988398B1 (en) * | 2014-08-20 | 2017-10-11 | Kabushiki Kaisha Toyota Jidoshokki | Rotating electric machine |
-
2018
- 2018-09-29 CN CN201811148293.2A patent/CN110967203B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3946875B2 (en) * | 1998-07-07 | 2007-07-18 | 日高精機株式会社 | Fins for heat exchanger |
| JP2006029486A (en) * | 2004-07-20 | 2006-02-02 | Daihatsu Motor Co Ltd | Cooling device for belt type continuously variable transmission |
| CN1919489A (en) * | 2005-08-23 | 2007-02-28 | 余金盘 | Process equipment for integral ring-shaped finned tube and technique thereof |
| WO2012042278A2 (en) * | 2010-10-01 | 2012-04-05 | Ets Design Ltd. | Electromechanical device |
| CN103088575A (en) * | 2011-11-08 | 2013-05-08 | 荆旭东 | Double-speed internal jetting flashy flow efficient washing roller |
| EP2988398B1 (en) * | 2014-08-20 | 2017-10-11 | Kabushiki Kaisha Toyota Jidoshokki | Rotating electric machine |
| CN104612969A (en) * | 2015-01-29 | 2015-05-13 | 珠海思齐电动汽车设备有限公司 | Double screw air compressor set for pure power-driven bus |
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