CN103470521B - Fan life prediction device - Google Patents
Fan life prediction device Download PDFInfo
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- CN103470521B CN103470521B CN201310444296.1A CN201310444296A CN103470521B CN 103470521 B CN103470521 B CN 103470521B CN 201310444296 A CN201310444296 A CN 201310444296A CN 103470521 B CN103470521 B CN 103470521B
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Abstract
The invention provides a kind of fan life prediction device, comprise: temperature transducer, current sensor and processor, the first input end of processor is connected with temperature transducer, second input end is connected with current sensor, the electrical signal that processor transmits with the current sensor got from the second input end is for trigger signal, the operating ambient temperature value of the blower fan got from first input end is tabled look-up, obtain the life consumption time of the lubricating grease corresponding with this operating ambient temperature value, and the life consumption time of all lubricating grease obtained is added up, thus obtain lubricating grease total life consumption time, and then can predict fan life, so that staff adopts an effective measure in time, avoid the generation of unnecessary accident.
Description
Technical field
The present invention relates to blower fan technical field, more particularly, relate to a kind of fan life prediction device.
Background technique
In the charged running of transformer, along with the increase of extraneous load, the temperature of its inner winding also progressively raises, and the too high meeting of winding temperature causes the insulating material accelerated ageing outside winding, thus makes the lost of life of transformer.Therefore transformer is typically equipped with blower fan, starts blower fan, thus transformer is lowered the temperature when winding temperature reaches certain value.But the application of blower fan, brings extra risk to transformer, and the life-span due to blower fan is limited, therefore to a certain degree will damage when fan operation is accumulated to, after blower fan damages, very large impact can be brought to the safety of transformer and continuous operation.
During fabrication, its internal bearings embedding lubricating grease, and the generally life-span exceeding lubricating grease far away in the life-span of bearing, therefore, lubricating grease was once lose efficacy, and the life-span of blower fan is about to expire for blower fan.Due to different ambient temperatures, the life time decay of lubricating grease is different, so how to carry out prediction to the life-span of blower fan is those skilled in the art's problem demanding prompt solutions.
Summary of the invention
In view of this, the invention provides a kind of fan life prediction device, to realize the prediction to fan life, to adopt an effective measure in time, avoid the generation of unnecessary accident.
A kind of fan life prediction device, comprising:
Be arranged at the temperature transducer near blower fan;
Be arranged at the current sensor of the power loop of described blower fan;
First input end is connected with the output terminal of described temperature transducer, second input end is connected with the output terminal of described current sensor, be pre-stored with each temperature value in the operating ambient temperature constant interval of described blower fan, with the described blower fan corresponding with each temperature value described often runs one hour, the relation table of the life consumption time of the lubricating grease in described blower fan, in the time period of the electrical signal that the described current sensor got at described second input end transmits, the operating ambient temperature value of described blower fan is obtained by described first input end, the life consumption time of the lubricating grease in the blower fan corresponding with the operating ambient temperature value of described blower fan is searched in described relation table, and all described life consumption time obtained is added up, with the processor of the life prediction to described blower fan.
Preferably, also comprise:
Input end is connected with the first output terminal of described processor, when the cumulative life time of described lubricating grease exceedes the default life time of the described lubricating grease of described processor prestor, carry out the alarm of reporting to the police according to the alarm signal obtaining the output of described processor.
Preferably, described alarm is buzzer.
Preferably, described alarm is warning light.
Preferably, also comprise:
Input end is connected with the second output terminal of described processor, shows the display device of described default life time and described cumulative life time.
Preferably, described display device is touch screen controller.
Preferably, described processor is provided with communication interface.
As can be seen from above-mentioned technological scheme, the invention provides a kind of fan life prediction device, comprise: temperature transducer, current sensor and processor, the first input end of processor is connected with temperature transducer, second input end is connected with current sensor, the electrical signal that processor transmits with the current sensor got from the second input end is for trigger signal, the operating ambient temperature value of the blower fan got from first input end is tabled look-up, obtain the life consumption time of the lubricating grease corresponding with this operating ambient temperature value, and the life consumption time of all lubricating grease obtained is added up, thus obtain lubricating grease total life consumption time, and then can predict fan life, so that staff adopts an effective measure in time, avoid the generation of unnecessary accident.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of Fig. 1 a kind of fan life prediction device disclosed in the embodiment of the present invention;
The structural representation of Fig. 2 another kind of fan life prediction device disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the invention discloses a kind of structural representation of fan life prediction device, comprising: temperature transducer 11, current sensor 12 and processor 13;
Wherein:
Temperature transducer 11 is arranged near blower fan, for obtaining the operating ambient temperature value of blower fan;
Current sensor 12 is arranged at the power loop of blower fan, and when blower fan is in operating condition, current sensor 12 can detect the electric current in fan power loop, and becomes electrical signal to export the current conversion of detection; When blower fan is in halted state, no current in fan power loop, now, current sensor 12 does not export electrical signal;
The first input end of processor 13 is connected with the output terminal of temperature transducer 11, second input end is connected with the output terminal of current sensor 12, processor 13 is pre-stored with each temperature value in the operating ambient temperature value constant interval of blower fan, with the described blower fan corresponding with each temperature value often runs one hour, the relation table of the life consumption time of the lubricating grease in described blower fan, in the time period of the electrical signal that the current sensor 12 that processor 13 gets at described second input end transmits, the operating ambient temperature value of described blower fan is obtained by described first input end, the life consumption time of the lubricating grease in the blower fan corresponding with the operating ambient temperature value of described blower fan is searched in described relation table, and all described life consumption time obtained is added up, to predict the life-span of blower fan.
It should be noted is that, the relation between the life consumption time L of lubricating grease and the operating ambient temperature value T of blower fan, can see formula (1),
Lg（L）=6.12-1.4n/N-（0.018-0.006n/N）T-（0.21Tn/N+0.03T+20.5）×（P/Cr）
2（1）
Wherein:
L: the life consumption time of lubricating grease, unit hrs;
N: the limit speed of blower fan, unit rpm;
N: bearing rotating speed, unit rpm;
P: the dynamic load of blower fan, unit N;
Cr: basic dynamic load rating, unit N;
T: the operating ambient temperature of blower fan, unit DEG C.
It should be noted is that for formula (1),
0.25≤n/N < 1(, as n/N < 0.25, calculates according to n/N=0.25);
P/Cr≤0.1。
What present embodiments provide a kind of operating ambient temperature value of blower fan and the life consumption time of lubricating grease contrasts form, and wherein, in form, data calculate according to n/N=0.25 and P/Cr=0.1 and obtain, specifically see table 1:
Table 1
As can be seen from Table 1, when blower fan is operated in different ambient temperatures, the life consumption time of lubricating grease is different, therefore, see above table, the operating ambient temperature value of blower fan can be converted into the life consumption time of lubricating grease, from blower fan operates for the first time, operating ambient temperature value residing in each for blower fan running time is all converted into the life consumption time of lubricating grease, and add up, the life consumption cumulative time of lubricating grease can be obtained, life-span due to blower fan depends on life-span of lubricating grease, so the prediction to fan life can be realized, thus staff can adopt an effective measure in time, avoid the generation of unnecessary accident.
It should be noted is that, the present embodiment is when blower fan is in running to the cumulative of the life consumption time of lubricating grease, be understandable that, when blower fan does not operate, due to the impact of other factors, ambient temperature such as residing for lubricating grease, lubricating grease also has certain life consumption, think increase to fan life prediction accuracy, processor 13 can also be pre-stored with blower fan when not operating, the life consumption time of lubricating grease, such as, when blower fan does not operate, the life consumption time of lubricating grease is 0.5hrs, therefore the life consumption time of the final lubricating grease obtained, the life consumption time of lubricating grease during life consumption time and the blower fan off-duty of lubricating grease during fan operation can be comprised.
Wherein, processor 13 obtains the processing procedure of the life consumption time of lubricating grease according to the operating ambient temperature value of blower fan obtained is well known to a person skilled in the art.
On basis embodiment illustrated in fig. 1, see Fig. 2, the embodiment of the invention discloses the structural representation of another kind of fan life prediction device, with embodiment illustrated in fig. 1 unlike, the present embodiment can also comprise: alarm 14;
The input end of alarm 14 is connected with the first output terminal of processor 13, when the cumulative life time of lubricating grease exceedes the default life time of the described lubricating grease of processor 13 prestor, the alarm signal that alarm 14 exports according to the processor 13 obtained is reported to the police.Therefore, after alarm 14 is reported to the police, staff can adopt an effective measure in time (as changed blower fan or safeguarding), improves the working life of blower fan, thus reaches the requirement of transformer to operational reliability.
It should be noted is that, the working life (i.e. initial value) of lubricating grease is determined when blower fan dispatches from the factory, after alarm 14, for leaving the sufficient time to staff to the replacing of blower fan or maintenance, the default life time of lubricating grease can be set to 90% of initial value.
Wherein, alarm 14 can be buzzer or warning light.
Be understandable that, when the operating ambient temperature of blower fan is too high, blower fan just easily breaks down in running, therefore, for reducing the generation of fan trouble, the preset temperature value (i.e. the maximum temperature values of fan safe operation) of blower fan can also be stored in processor 13, when the operating ambient temperature of blower fan exceedes the preset temperature value of blower fan, processor 13 controls alarm 14 and reports to the police, thus staff is adopted an effective measure in time, avoid because fan trouble affects the stable operation of transformer.
For optimizing technique scheme further, the present embodiment can also comprise: display device 15;
The input end of display device 15 is connected with the second output terminal of processor 13, and display device 15 can the default life time of lubricating grease of video-stream processor 13 prestor and the cumulative life time of lubricating grease.
Therefore, staff can be clearly seen that the life situations of fan operation by display device 15, judges that blower fan is changed the need of carrying out or safeguarded in advance, thus improves the life-span of blower fan.
Be understandable that, display device 15 can also show operating ambient temperature value during blower fan running.
Preferably, display device 15 can be touch screen controller.
It should be noted is that, in each embodiment above-mentioned, processor 13 can be provided with communication interface, processor 13 can send the operating ambient temperature value of the cumulative life time of lubricating grease and blower fan to extraneous reception unit.
Wherein, fan life prediction device provided by the invention as an independently instrument, also can integrate as partial function and other devices.
In summary it can be seen, the natural hour number that blower fan runs by the present invention under any operating ambient temperature, be converted into the life consumption time of lubricating grease, and the life consumption time that accumulative acquisition lubricating grease is total, i.e. the life consumption time of blower fan, achieve the prediction to fan life, by judging that blower fan is the need of replacing or maintenance etc. in advance, improve the working life of blower fan, reach the requirement of transformer to operational reliability.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a fan life prediction device, is characterized in that, comprising:
Be arranged at the temperature transducer near blower fan;
Be arranged at the current sensor of the power loop of described blower fan;
First input end is connected with the output terminal of described temperature transducer, second input end is connected with the output terminal of described current sensor, be pre-stored with blower fan when not operating, the life consumption time of lubricating grease, be pre-stored with each temperature value in the operating ambient temperature constant interval of described blower fan, with the described blower fan corresponding with each temperature value described often runs one hour, the relation table of the life consumption time of the lubricating grease in described blower fan, in the time period of the electrical signal that the described current sensor got at described second input end transmits, the operating ambient temperature value of described blower fan is obtained by described first input end, the life consumption time of the lubricating grease in the blower fan corresponding with the operating ambient temperature value of described blower fan is searched in described relation table, and all described life consumption time obtained is added up, with the processor of the life prediction to described blower fan, wherein, the life consumption time of described lubricating grease, comprise the life consumption time of lubricating grease during life consumption time and the blower fan off-duty of lubricating grease during fan operation.
2. fan life prediction device according to claim 1, is characterized in that, also comprises:
Input end is connected with the first output terminal of described processor, when the cumulative life time of described lubricating grease exceedes the default life time of the described lubricating grease of described processor prestor, carry out the alarm of reporting to the police according to the alarm signal obtaining the output of described processor.
3. fan life prediction device according to claim 2, is characterized in that, described alarm is buzzer.
4. fan life prediction device according to claim 2, is characterized in that, described alarm is warning light.
5. fan life prediction device according to claim 2, is characterized in that, also comprises:
Input end is connected with the second output terminal of described processor, shows the display device of described default life time and described cumulative life time.
6. fan life prediction device according to claim 5, is characterized in that, described display device is touch screen controller.
7. the fan life prediction device according to any one of claim 1 to 6, is characterized in that, described processor is provided with communication interface.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110456194A (en) * | 2019-07-31 | 2019-11-15 | 亿轶环境科技(上海)有限公司 | Frequency conversion fan service life monitoring method and device for air disinfecting and purifying device |
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| CN110006014A (en) | 2018-01-05 | 2019-07-12 | 通用电气照明解决方案有限公司 | A kind of the fan life forecasting system and its method of lamp and lamp |
| JP7152222B2 (en) * | 2018-08-31 | 2022-10-12 | ファナック株式会社 | FAN MOTOR LIFE PREDICTION METHOD AND FAN MOTOR LIFE PREDICTION DEVICE |
| CN110645197B (en) * | 2019-10-12 | 2021-02-02 | 苏州浪潮智能科技有限公司 | Method and system for detecting service life of fan |
| CN111121233A (en) * | 2019-12-31 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Method and device for evaluating service life of air conditioner and air conditioner |
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| CN1934433A (en) * | 2004-03-31 | 2007-03-21 | 中国电力股份有限公司 | Method and device for assessing remaining life of rolling bearing |
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Address after: 570216 7 Haikou Free Trade Zone, 168 Nanhai Road, Haikou, Hainan. Co-patentee after: Guilin Juntaifu Electric Co., Ltd. Patentee after: Hainan Jinpan intelligent Polytron Technologies Inc Address before: 570216 7 Haikou Free Trade Zone, 168 Nanhai Road, Haikou, Hainan. Co-patentee before: Guilin Juntaifu Electric Co., Ltd. Patentee before: Hainan Jinpan Electric Co., Ltd. |
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