CN112824857A - Fault monitoring method for rotary engineering machinery - Google Patents
Fault monitoring method for rotary engineering machinery Download PDFInfo
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- CN112824857A CN112824857A CN201911138392.7A CN201911138392A CN112824857A CN 112824857 A CN112824857 A CN 112824857A CN 201911138392 A CN201911138392 A CN 201911138392A CN 112824857 A CN112824857 A CN 112824857A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000001133 acceleration Effects 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 210000000056 organ Anatomy 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003745 diagnosis Methods 0.000 description 4
- 230000008439 repair process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000004048 modification Effects 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
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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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
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Abstract
The invention provides a fault monitoring method of rotary engineering machinery, which comprises the following steps: s1, arranging a main rotating speed sensor and a main pressure sensor on a main shaft of the rotary engineering machinery, and detecting the rotating speed and the pressure of the main shaft; s2, arranging an auxiliary rotating speed sensor and an auxiliary pressure sensor on an eccentric shaft of the rotary engineering machinery, and detecting the rotating speed and the pressure of the eccentric shaft; s3, arranging a vibration sensor on the rotary engineering machinery shell to detect vibration acceleration; s4 determines the threshold values of the rotational speed and the pressure of the main shaft and the eccentric shaft, and the threshold value of the vibration acceleration of the rotary working machine, and compares the detected rotational speed and the detected pressure of the main shaft and the eccentric shaft, and the detected vibration acceleration of the rotary working machine with the respective threshold values thereof one by one, and determines whether the rotary working machine is faulty. The invention has the beneficial effects that: whether the machine has faults or not is accurately diagnosed, timely maintenance can be carried out before the faults do not occur or when the machine has small faults in the early stage, and fault loss is minimized.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a fault monitoring method of rotary engineering machinery.
Background
With the rapid development of science and technology, rotary machinery equipment is rapidly developed towards high speed, precision, automation and integration, and the rotary machinery mainly comprises power devices such as a diesel engine, a steam turbine, an engine, a motor and the like, and also comprises rotating parts such as a bearing, a bearing bush, a main shaft and the like. With the diversification of working environments of rotary machines, especially when the rotary machines continuously run for a long time in complicated and variable working environments, various faults are easy to occur due to the workload, variable load, saline-alkali corrosion, high temperature and the like. If the fault cannot be diagnosed and removed effectively and timely, once the fault damage spreads under the strong coupling state, a great loss may be brought. Therefore, fault diagnosis and state online monitoring of the rotating machine are important for guaranteeing safe and stable operation of the equipment, and therefore the fault diagnosis and state online monitoring system device of the rotating machine is very important safe operation monitoring equipment.
Before the invention, the current products or methods for fault diagnosis and state monitoring of rotating machinery on the market are rare, and more still traditional 'after repair', 'planned repair' and 'timed maintenance' modes are applied, the method is often very low in efficiency and has no intelligence, in addition, the traditional maintenance mode of regularly maintaining and regularly replacing parts according to experience and estimating the service life of the parts by experience is easy to cause waste and misjudgment, and brings potential safety hazards, so that the requirements of technical personnel on intelligent fault diagnosis and online state monitoring cannot be met.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a fault monitoring method for a rotary type construction machine.
The embodiment of the invention provides a fault monitoring method of rotary engineering machinery, which comprises the following steps:
s1, arranging a main rotating speed sensor and a main pressure sensor on a main shaft of the rotary engineering machinery, detecting the rotating speed of the main shaft through the main rotating speed sensor, and detecting the pressure applied to the main shaft through the main pressure sensor;
s2, arranging an auxiliary rotating speed sensor and an auxiliary pressure sensor on an eccentric shaft of the rotary engineering machine, detecting the rotating speed of the eccentric shaft through the auxiliary rotating speed sensor, and detecting the pressure applied to the eccentric shaft through the auxiliary pressure sensor;
s3 arranging a vibration sensor on the rotary working machine housing, detecting a vibration acceleration of the rotary working machine by the vibration sensor;
s4 determines a rotation speed threshold and a pressure threshold of the main shaft, a rotation speed threshold and a pressure threshold of the eccentric shaft, and a vibration acceleration threshold of the rotary working machine, and compares the detected rotation speed and pressure of the main shaft, rotation speed and pressure of the eccentric shaft, and vibration acceleration of the rotary working machine with their respective corresponding thresholds one by one, and determines whether the rotary working machine is faulty.
Further, still include:
s5 displays the failure determination result in the step S4, and transmits a failure signal to a remote terminal when it is determined that the rotary working machine is failed.
Further, still include:
s6 is in last bee calling organ and the warning light of setting up of rotation type engineering machine tool, if judge rotation type engineering machine tool trouble, then pass through bee calling organ sends buzzing, and passes through the warning light scintillation sends trouble warning.
Further, still include:
and S7, if the fault of the rotary engineering machinery is judged, sending a fault signal to a controller of the rotary engineering machinery, and automatically powering off and shutting down the rotary engineering machinery.
Further, the step S1 further includes: arranging a main displacement sensor on a main shaft of the rotary engineering machinery, and detecting the position of the main shaft through the displacement sensor;
the step S4 further includes determining whether the rotary working machine is out of order by determining whether the change in the spindle position exceeds a preset limit range.
Further, the step 4 further includes: and determining the difference value between the pressure applied to the main shaft and the pressure applied to the eccentric shaft, comparing the difference value with a preset threshold value of the pressure applied to the main shaft and the pressure applied to the eccentric shaft, and judging the engineering machinery fault if the difference value exceeds the threshold value.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: the fault monitoring method of the rotary engineering machinery can automatically and intelligently monitor various parameters of the working state of the rotary engineering machinery, and can accurately diagnose whether the rotary engineering machinery has faults or not by extracting the monitoring parameter data when the rotary engineering machinery works and comparing the monitoring parameter data with the preset parameter data, so that technicians can carry out timely maintenance before the faults do not occur or when the faults are small in early stage, and the fault loss is minimized.
Drawings
Fig. 1 is a flowchart of a fault monitoring method of a rotary working machine according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a fault monitoring method for a rotary type construction machine, including the following steps:
s1, arranging a main rotating speed sensor and a main pressure sensor on a main shaft of the rotary engineering machinery, detecting the rotating speed of the main shaft through the main rotating speed sensor, and detecting the pressure applied to the main shaft through the main pressure sensor;
arranging a main displacement sensor on a main shaft of the rotary engineering machinery, and detecting the position of the main shaft through the displacement sensor;
arranging a main displacement sensor on a main shaft of the rotary engineering machinery, and detecting the position of the main shaft through the displacement sensor;
the position, the rotational speed, the pressure and the position of the rotary working machine in the working state of the main shaft are monitored in real time.
S2, arranging an auxiliary rotating speed sensor and an auxiliary pressure sensor on an eccentric shaft of the rotary engineering machine, detecting the rotating speed of the eccentric shaft through the auxiliary rotating speed sensor, and detecting the pressure applied to the eccentric shaft through the auxiliary pressure sensor;
here the rotational speed and the pressure in the operating state of the eccentric shaft of the rotary working machine.
S3 arranging a vibration sensor on the rotary working machine housing, detecting a vibration acceleration of the rotary working machine by the vibration sensor; here, the vibration acceleration of the rotary working machine can be obtained.
S4 determines a rotation speed threshold and a pressure threshold of the main shaft, a rotation speed threshold and a pressure threshold of the eccentric shaft, and a vibration acceleration threshold of the rotary working machine, and compares the detected rotation speed and pressure of the main shaft, rotation speed and pressure of the eccentric shaft, and vibration acceleration of the rotary working machine with their respective corresponding thresholds one by one, and determines whether the rotary working machine is faulty. Because various parameters of the main shaft and the eccentric shaft are specified by the manufacturing standards of various rotary engineering machines in the working state of the rotary engineering machine, the threshold values of the various parameters of the main shaft and the eccentric shaft can be determined according to the standards, and when any one parameter exceeds the threshold value, the abnormal condition and the fault of the rotary engineering machine can be judged.
In addition, whether the rotary type construction machine is in fault or not can be judged through the position change of the rotary type construction machine main shaft, and the fault or not of the rotary type construction machine can be determined through judging the position of the rotary type construction machine because the necessary position of the rotary type construction machine main shaft in a working state must be limited within a certain range.
Whether the rotary engineering machinery is in fault can be judged according to the difference value of the pressure borne by the main shaft and the pressure borne by the eccentric shaft. The method specifically comprises the following steps: and determining the difference value between the pressure applied to the main shaft and the pressure applied to the eccentric shaft, comparing the difference value with a preset threshold value of the pressure applied to the main shaft and the pressure applied to the eccentric shaft, and judging the engineering machinery fault if the difference value exceeds the threshold value.
S5 displays the failure determination result in the step S4, and transmits a failure signal to a remote terminal when it is determined that the rotary working machine is failed. The remote monitoring of the working state of the rotary engineering machinery can be realized, the fault of the rotary engineering machinery can be remotely known, and the monitoring management is convenient.
S6 is in last bee calling organ and the warning light of setting up of rotation type engineering machine tool, if judge rotation type engineering machine tool trouble, then pass through bee calling organ sends buzzing, and passes through the warning light scintillation sends trouble warning. And reminding a user that the rotary engineering machinery breaks down through sound and light alarm.
And S7, if the fault of the rotary engineering machinery is judged, sending a fault signal to a controller of the rotary engineering machinery, and automatically powering off and shutting down the rotary engineering machinery. The system can be maintained in time when a small fault occurs in the early stage, and avoids serious loss caused by increased fault deterioration.
The fault monitoring method of the rotary engineering machinery can automatically and intelligently monitor various parameters of the working state of the rotary engineering machinery, and can accurately diagnose whether the rotary engineering machinery has faults or not by extracting the monitoring parameter data when the rotary engineering machinery works and comparing the monitoring parameter data with the preset parameter data, so that technicians can carry out timely maintenance before the faults do not occur or when the faults are small in early stage, and the fault loss is minimized.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A fault monitoring method of a rotary engineering machine is characterized by comprising the following steps:
s1, arranging a main rotating speed sensor and a main pressure sensor on a main shaft of the rotary engineering machinery, detecting the rotating speed of the main shaft through the main rotating speed sensor, and detecting the pressure applied to the main shaft through the main pressure sensor;
s2, arranging an auxiliary rotating speed sensor and an auxiliary pressure sensor on an eccentric shaft of the rotary engineering machine, detecting the rotating speed of the eccentric shaft through the auxiliary rotating speed sensor, and detecting the pressure applied to the eccentric shaft through the auxiliary pressure sensor;
s3 arranging a vibration sensor on the rotary working machine housing, detecting a vibration acceleration of the rotary working machine by the vibration sensor;
s4 determines a rotation speed threshold and a pressure threshold of the main shaft, a rotation speed threshold and a pressure threshold of the eccentric shaft, and a vibration acceleration threshold of the rotary working machine, and compares the detected rotation speed and pressure of the main shaft, rotation speed and pressure of the eccentric shaft, and vibration acceleration of the rotary working machine with their respective corresponding thresholds one by one, and determines whether the rotary working machine is faulty.
2. The method of fault monitoring of a rotary work machine of claim 1, further comprising:
s5 displays the failure determination result in the step S4, and transmits a failure signal to a remote terminal when it is determined that the rotary working machine is failed.
3. The method of fault monitoring of a rotary work machine of claim 2, further comprising:
s6 is in last bee calling organ and the warning light of setting up of rotation type engineering machine tool, if judge rotation type engineering machine tool trouble, then pass through bee calling organ sends buzzing, and passes through the warning light scintillation sends trouble warning.
4. The method of claim 3, further comprising:
and S7, if the fault of the rotary engineering machinery is judged, sending a fault signal to a controller of the rotary engineering machinery, and automatically powering off and shutting down the rotary engineering machinery.
5. The method for monitoring faults of a rotary type construction machine according to claim 1, wherein the step S1 further comprises: arranging a main displacement sensor on a main shaft of the rotary engineering machinery, and detecting the position of the main shaft through the displacement sensor;
the step S4 further includes determining whether the rotary working machine is out of order by determining whether the change in the spindle position exceeds a preset limit range.
6. The method of claim 1, wherein the step 4 further comprises: and determining the difference value between the pressure applied to the main shaft and the pressure applied to the eccentric shaft, comparing the difference value with a preset threshold value of the pressure applied to the main shaft and the pressure applied to the eccentric shaft, and judging the engineering machinery fault if the difference value exceeds the threshold value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138392.7A CN112824857A (en) | 2019-11-20 | 2019-11-20 | Fault monitoring method for rotary engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138392.7A CN112824857A (en) | 2019-11-20 | 2019-11-20 | Fault monitoring method for rotary engineering machinery |
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| CN112824857A true CN112824857A (en) | 2021-05-21 |
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| CN201911138392.7A Pending CN112824857A (en) | 2019-11-20 | 2019-11-20 | Fault monitoring method for rotary engineering machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116412113A (en) * | 2021-12-31 | 2023-07-11 | 中油国家油气钻井装备工程技术研究中心有限公司 | Petroleum engineering pump hydraulic end monitoring device and diagnosis prediction method |
| CN118443312A (en) * | 2024-05-08 | 2024-08-06 | 中国人民解放军火箭军工程大学 | Early detection method and device for weak faults of rolling bearing |
-
2019
- 2019-11-20 CN CN201911138392.7A patent/CN112824857A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116412113A (en) * | 2021-12-31 | 2023-07-11 | 中油国家油气钻井装备工程技术研究中心有限公司 | Petroleum engineering pump hydraulic end monitoring device and diagnosis prediction method |
| CN118443312A (en) * | 2024-05-08 | 2024-08-06 | 中国人民解放军火箭军工程大学 | Early detection method and device for weak faults of rolling bearing |
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Application publication date: 20210521 |