CN113758714A - Fault diagnosis method for marine diesel engine - Google Patents
Fault diagnosis method for marine diesel engine Download PDFInfo
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000007613 environmental effect Effects 0.000 claims abstract description 28
- 239000000523 sample Substances 0.000 claims description 56
- 239000000779 smoke Substances 0.000 claims description 37
- 238000012545 processing Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
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- 238000005457 optimization Methods 0.000 description 5
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Abstract
The invention relates to a fault diagnosis method of a marine diesel engine, which is used for diagnosing the fault of the diesel engine based on a fault diagnosis device, wherein the fault diagnosis device comprises a first acquisition device, a second acquisition device and a fault diagnosis system, wherein the first acquisition device is arranged in contact with the diesel engine and acquires the internal operating environment data of the diesel engine in real time; the method comprises the steps that a first acquisition device and a second acquisition device are used for respectively acquiring environmental data in the running process of the diesel engine in real time, when the first acquisition device gives an alarm for the fault of the diesel engine, the environmental data which are acquired by the second acquisition device and correspond to the fault alarm type of the first acquisition device are used as fault threshold values, and the second acquisition device and the fault threshold values are used for carrying out fault diagnosis on the diesel engine in the practical environment. The method provided by the invention has the advantages that the detection result is not influenced by factors such as diesel engine operation vibration and the like, the detection precision is high, and the service life is long.
Description
Technical Field
The invention belongs to the technical field of diesel engine fault diagnosis, and particularly relates to a marine diesel engine fault diagnosis method.
Background
With the development of shipping industry, the construction of ship machinery is also advanced, mechanical faults are common in the application process of diesel engines, and the normal operation of ships is greatly influenced. Therefore, the failure diagnosis and failure treatment of the marine diesel engine are main targets of marine management. The fault diagnosis is a prerequisite for fault handling, and during the fault diagnosis, the classification of the fault and the sign of the fault must be determined first.
The diesel engine fault diagnosis technology is a technology for acquiring state information of equipment in the operation process or under a relatively static condition, judging and identifying real-time operation technical states of mechanical equipment and parts thereof by analyzing and processing measured signals and combining historical working conditions of the equipment, predicting abnormal faults and determining necessary preventive measures.
Conventional fault diagnosis methods generally employ sensors to acquire various temperature and pressure parameters of the diesel engine, and perform fault diagnosis based on the acquired parameters. However, since the diesel engine includes many systems and components, which have various forces, the generated diesel engine vibration is a multi-vibration source, a wide frequency band and a complex shape, and is thus affected by the vibration, a sensor located in the diesel engine is easily damaged and detection data is not accurate, and further, the measured fault parameters that can be effectively extracted are not many, the diagnosis accuracy of the fault type is not high, and misjudgment is easily caused.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for diagnosing a failure of a marine diesel engine by detecting smoke, vibration, or the like, which is provided outside the diesel engine.
The invention realizes the purpose through the following technical scheme:
a marine diesel engine fault diagnosis device comprises a first acquisition device, a second acquisition device and a fault diagnosis system, wherein the first acquisition device is in contact with a diesel engine and acquires operating environment data inside the diesel engine in real time;
the first acquisition device comprises a plurality of first acquisition probes for acquiring the internal operating environment data of the diesel engine;
the second acquisition device comprises a data box, a second acquisition probe in communication connection with the data box through a bendable connecting piece, and a lifting mechanism for driving the data box and the acquisition assembly to be close to/far away from the diesel engine, wherein the bendable connecting piece is used for adjusting the position of the second acquisition probe;
the fault diagnosis system is used for receiving the environmental data collected by the first collection device and the second collection device, determining the environmental data collected by the second collection device and corresponding to the fault alarm type of the first collection device as the fault threshold value of the second collection device when the first collection device gives an alarm for the fault of the diesel engine, and utilizing the second collection device to monitor the diesel engine in the practical environment and to diagnose and alarm the fault of the diesel engine based on the fault threshold value.
As a further optimization scheme of the invention, the first acquisition probe is one or more of a smoke sensor, a noise sensor and a vibration sensor which are installed in the diesel engine and is respectively used for acquiring one or more of smoke component data, first noise data and vibration data of the diesel engine.
As a further optimized scheme of the invention, the second acquisition probe comprises one or more of a camera, a noise acquisition probe and a vibration wave acquisition probe;
the camera is used for collecting a smoke image in the operation process of the diesel engine, the camera is connected with an image recognition processing system, and the image recognition processing system is integrated in the data box and is used for recognizing the smoke color in the smoke image to obtain smoke image data based on the smoke color;
the noise acquisition probe is used for acquiring sound waves in the operation process of the diesel engine, the noise acquisition probe is connected with a noise filtering extraction system, the noise filtering extraction system is integrated in the data box, the acquired sound waves are processed based on the stored noise characteristics, noise in the sound waves is filtered out, the sound waves containing the noise characteristics are extracted, and the sound waves are digitized to obtain second noise data;
the vibration wave acquisition probe is used for transmitting radar waves to the surface of the diesel engine, the vibration wave acquisition probe is connected with the six-port continuous wave radar system, the six-port continuous wave radar system is integrated in the data box and receives radar echo signals reflected back after the radar waves reach the surface of the diesel engine, the radar echo phases under different vibrations can be changed, and vibration wave data based on the radar echo phases are obtained.
As a further optimization scheme of the invention, the bendable connecting piece comprises a data line and a bendable and shapeable coiled pipe sleeved outside the data line, one end of the data line is connected with an interface on the data box through a plug, and the other end of the data line is connected with the camera/the noise collecting probe/the vibration wave collecting probe through a connector.
As a further optimization scheme of the invention, the fault diagnosis system is arranged in the data box and comprises a central controller, a threshold value determination module and an alarm module;
the central controller is used for receiving the environmental data acquired by the first acquisition device and the second acquisition device and sending the environmental data to the threshold value determining module;
the threshold determination module is used for determining environmental data which are acquired by the second acquisition device and correspond to the fault alarm type of the first acquisition device as a fault threshold of the second acquisition device when the first acquisition device alarms the fault of the diesel engine;
the alarm module diagnoses and alarms the fault of the diesel engine based on the fault threshold value.
As a further optimization scheme of the invention, GPS positioners are arranged on the connecting heads connected with the camera, the noise acquisition probe and the vibration wave acquisition probe, and the acquired flue gas image data, the second noise data and the vibration wave data contain GPS positioning information, namely measurement position information.
As a further optimization scheme of the invention, the alarm module is connected with the intelligent terminal through the wireless module and used for sending the fault alarm signal and the measurement position information to the intelligent terminal to realize remote alarm.
As a further optimized scheme of the invention, the lifting mechanism comprises a mounting plate, a screw rod, a positioning rod and a sliding seat; the lead screw runs through the mounting panel and rotates with the mounting panel through the bearing to be connected, the slide sets up on the lead screw and cooperates with the lead screw, the locating lever is fixed in on the mounting panel and runs through slide and slide sliding connection, the data box is fixed in on the slide.
As a further optimized scheme of the invention, the camera can be further mounted at the top of the lifting mechanism through a telescopic rod structure, the telescopic rod structure comprises a telescopic inner rod and a multi-stage telescopic rod, the bottom end of the telescopic inner rod is sleeved in a chute on the upper surface of the screw rod, and the multi-stage telescopic rod is vertically and fixedly arranged at the top end of the telescopic inner rod and used for fixing the camera.
A fault diagnosis method for a marine diesel engine comprises the following diagnosis steps:
s1, respectively acquiring environmental data in the running process of the diesel engine in real time by using a first acquisition device arranged in a contact manner inside the diesel engine and a second acquisition device arranged in a non-contact manner outside the diesel engine;
s2, when the first acquisition device alarms the fault of the diesel engine, taking the environmental data acquired by the second acquisition device and corresponding to the fault alarm type of the first acquisition device as a fault threshold value;
and S3, deploying the second acquisition device outside the diesel engine in a practical environment in a non-contact manner, acquiring environmental data of the diesel engine in the operation process in real time, and performing fault alarm according to the fault threshold.
The invention has the beneficial effects that:
1) the invention detects the smoke, noise and vibration wave of the diesel engine in a non-contact mode, synchronously adopts the contact sensor to detect smoke components, noise and vibration, can determine the fault threshold value detected in the non-contact mode when the contact sensor gives an alarm, and has the advantages that when the second acquisition device is used in a practical environment, the detection result is not influenced by factors such as the running vibration of the diesel engine and the like, the detection precision is high, and the service life of the device is long;
2) according to the invention, the noise acquisition probe and the vibration wave acquisition probe are respectively provided with the GPS localizers, the detection data carries measurement position information, the fault position of the diesel engine can be rapidly deduced and determined through the position information, the fault reason can be rapidly determined, and the diesel engine can be rapidly overhauled;
3) the second acquisition device and the fault diagnosis system are used as fault diagnosis devices when the diesel engine actually runs, and the second acquisition device and the fault diagnosis system are arranged outside the diesel engine, so that the diesel engine can be overhauled without being disassembled and assembled, the operation is more convenient, and troubles such as disassembling and assembling of the diesel engine are eliminated.
Drawings
FIG. 1 is an overall front view of embodiment 1 of the present invention;
FIG. 2 is an overall side view of embodiment 1 of the present invention;
FIG. 3 is a schematic cross-sectional view of a bendable connector according to the present invention;
FIG. 4 is an overall system block diagram of the present invention;
FIG. 5 is a schematic diagram of the fault diagnosis system of the present invention;
FIG. 6 is a schematic structural diagram of a smoke image acquisition device of the present invention;
FIG. 7 is a schematic view of the noise collection assembly of the present invention;
FIG. 8 is a schematic structural view of the vibration wave collecting apparatus of the present invention;
FIG. 9 is an overall front view of embodiment 2 of the present invention;
FIG. 10 is an overall side view of embodiment 2 of the present invention;
in the figure: 1. a first acquisition device; 2. a second acquisition device; 21. a data box; 22. a bendable connecting member; 221. a data line; 222. a serpentine tube; 23. a second acquisition probe; 231. a camera; 232. a noise collection probe; 233. a vibration wave acquisition probe; 234. an image recognition processing system; 235. a noise filtering extraction system; 236. a six-port continuous wave radar system; 24. a lifting mechanism; 241. mounting a plate; 242. a screw rod; 243 positioning the rod; 244. a slide base; 3. a fault diagnosis system; 31. a central controller; 32. a threshold determination module; 33. an alarm module; 34. an alarm device; 4. an intelligent terminal; 5. a telescopic inner rod; 6. a multi-stage telescopic rod; 7. a chute; 8. a GPS locator.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1 to 8, a marine diesel engine fault diagnosis device includes a first acquisition device 1 which is in contact with a diesel engine and acquires internal operating environment data of the diesel engine in real time, a second acquisition device 2 which is in non-contact with the diesel engine and acquires external operating environment data of the diesel engine in real time, and a fault diagnosis system 3 which is connected to the first acquisition device 1 and the second acquisition device 2.
The first acquisition device 1 comprises a plurality of first acquisition probes for acquiring internal operating environment data of the diesel engine; the first acquisition probe is one or more of a smoke sensor, a noise sensor and a vibration sensor which are arranged in the diesel engine and is respectively used for acquiring one or more of smoke component data, first noise data and vibration data of the diesel engine; the first acquisition device 1 is only used when the fault threshold value is determined in the previous period, the adopted sensors are all newly used sensors with higher precision, the measurement data is ensured to be accurate, and the influence of factors such as long-term vibration of the diesel engine on the sensors is eliminated.
The second acquisition device 2 comprises a data box 21, a second acquisition probe 23 in communication connection with the data box 21 through a bendable connecting piece 22, and a lifting mechanism 24 for driving the data box 21 and the acquisition component to approach/depart from the diesel engine, wherein the bendable connecting piece 22 is used for adjusting the position of the second acquisition probe 23;
wherein the second collecting probe 23 comprises one or more of a camera 231, a noise collecting probe 232 and a vibration wave collecting probe 233;
the camera 231 is used for collecting a smoke image in the operation process of the diesel engine, the camera 231 is connected with the image recognition processing system 234 to form a smoke image collecting device, and the image recognition processing system 234 is integrated in the data box 21 and is used for recognizing the smoke color in the smoke image to obtain smoke image data based on the smoke color; whether the diesel engine works or not can be judged by observing the exhaust smoke color of the diesel engine, the exhaust smoke color of the engine is colorless or light gray at normal working temperature, the colorless is not completely colorless and cannot be colorless like a gasoline engine, but the colorless is accompanied with light gray, and the normal exhaust smoke color is obtained; when the engine is abnormal, black smoke, blue smoke, white smoke, gray smoke and the like are emitted by the engine and represent different fault conditions respectively, so that whether the diesel engine fails or not can be judged;
the noise acquisition probe 232 is used for acquiring sound waves in the operation process of the diesel engine, the noise acquisition probe 232 is connected with the noise filtering extraction system 235 to form a noise acquisition device, the noise filtering extraction system 235 is integrated in the data box 21 and processes the acquired sound waves based on the stored noise characteristics, the noise in the sound waves is filtered out to extract the sound waves containing the noise characteristics, and the sound waves are digitized to obtain second noise data; the working principle of the diesel engine determines that the noise of the diesel engine is larger than that of the gasoline engine, and when the diesel engine breaks down, the diesel engine can show larger abnormal sound, such as knocking noise, exhaust noise and the like, which respectively represent different faults, and the tone colors of the diesel engine are different, namely the noise characteristics are different, so that the faults can be judged based on the tone colors and the noise intensity through noise detection;
the vibration wave acquisition probe 233 is used for transmitting radar waves to the surface of the diesel engine, the vibration wave acquisition probe 233 is connected with a six-port continuous wave radar system 236 to form a vibration wave acquisition device, the six-port continuous wave radar system 236 is integrated in the data box 21 and receives radar echo signals reflected back after the radar waves reach the surface of the diesel engine, the radar echo phases under different vibrations can be changed, and vibration wave data based on the radar echo phases are obtained; when the diesel engine works normally, normal vibration is obtained by conventional feeling, the vibration is small at low speed and low load, the vibration is increased at high speed and high load, and a gradually transitional vibration process is formed in the acceleration process. When the vibration is obviously changed and obviously increased in use, the diesel engine is indicated to be out of order. The diesel engine support is a connecting device of the diesel engine and the frame, and the vibration of the diesel engine is obviously changed after the diesel engine support is damaged; therefore, the fault of the diesel engine can be diagnosed through vibration detection;
the lifting mechanism 24 comprises a mounting plate 241, a screw rod 242, a positioning rod 243 and a sliding seat 244; the screw 242 penetrates through the mounting plate 241 and is rotatably connected with the mounting plate 241 through a bearing, the sliding seat 244 is arranged on the screw 242 and is matched with the screw 242, the positioning rod 243 is fixed on the mounting plate 241 and penetrates through the sliding seat 244 to be slidably connected with the sliding seat 244, and the data box 21 is fixed on the sliding seat 244;
the flexible connecting piece 22 comprises a data line 221 and a flexible shaped coiled pipe 222 sleeved outside the data line 221, wherein one end of the data line 221 is connected with an interface on the data box 21 through a plug, and the other end of the data line is connected with a camera 231, a noise collecting probe 232 and a vibration wave collecting probe 233 through a connector.
It should be noted that: in the diesel engine practical application environment, install flue gas image acquisition device, noise collection system and vibration wave collection system through above-mentioned device, fix on the wall of diesel engine one side through mounting panel 241, rotate rotatory handle, can drive lead screw 242 and rotate, its drive slide 244 and data box 21 go up and down to suitable height, the camera 231 of being convenient for, noise collection probe 232, vibration wave collection probe 233 are located the appropriate distance of diesel engine detection position. The detection part can be adjusted by the serpentine tube 222 through the camera 231, the noise acquisition probe 232 and the vibration wave acquisition probe 233, and the use is more flexible. Whole device all sets up in the diesel engine outside, also overhauls easily, need not the dismouting diesel engine.
The fault diagnosis system 3 is used for receiving the environmental data acquired by the first acquisition device 1 and the second acquisition device 2, determining the environmental data acquired by the second acquisition device 2 and corresponding to the fault alarm type of the first acquisition device 1 as a fault threshold value of the second acquisition device 2 when the first acquisition device 1 alarms the fault of the diesel engine, for example, when the first acquisition device 1 acquires a noise alarm signal, taking the corresponding noise data acquired by the second acquisition device as a noise fault threshold value, monitoring the diesel engine in a practical environment by using the second acquisition device 2, and diagnosing and alarming the fault of the diesel engine based on the fault threshold value;
the fault diagnosis system 3 is installed in the data box 21, and the fault diagnosis system 3 comprises a central controller 31, a threshold value determination module 32 and an alarm module 33;
the central controller 31 is configured to receive environmental data acquired by the first acquisition device 1 and the second acquisition device 2, and send the environmental data to the threshold determination module 32; meanwhile, the central controller 31 can also control the diesel engine to stop running or other operations when the fault occurs, so that the safety of the diesel engine is ensured;
the threshold determination module 32 is configured to determine, when the first acquisition device 1 performs a diesel engine fault alarm, the environmental data acquired by the second acquisition device 2 and corresponding to the fault alarm type of the first acquisition device 1 as a fault threshold of the second acquisition device 2;
the alarm module 33 diagnoses and alarms the diesel engine fault based on the fault threshold, the fault diagnosis system 3 further comprises an alarm device 34, and the alarm device 34 can be an audible and visual alarm.
According to the invention, non-contact detection is adopted, when smoke color judgment, noise detection and vibration wave detection are carried out, the smoke color judgment, the noise detection and the vibration wave detection are influenced by the distance (the distance between the camera 231, the noise acquisition probe 232 and the vibration wave acquisition probe 233 which are installed and a diesel engine measuring part), the detected data is data of a loss part, and whether the diesel engine fails or not can not be accurately judged, so that the detection is carried out after the distance is determined;
the diesel engine, the first acquisition device 1, the second acquisition device 2 and the fault diagnosis system 3 are started simultaneously to acquire data synchronously, when the first acquisition device 1 alarms on a fault of the diesel engine, the environmental data acquired by the second acquisition device 2 and corresponding to the fault alarm type of the first acquisition device 1 is extracted simultaneously, the environmental data is used as a fault threshold value of the second acquisition device 2, the fault threshold value is a fault threshold value of smoke color, a noise fault threshold value and a radar echo phase fault threshold value, therefore, in the practical application environment of the subsequent diesel engine, real-time data can be acquired by adopting a smoke image acquisition device, a noise acquisition device and a vibration wave acquisition device, after the directly acquired data is compared with the fault threshold value, fault alarm can be performed, and operations such as data conversion can be omitted.
The connecting heads connected with the camera 231, the noise acquisition probe 232 and the vibration wave acquisition probe 233 are all provided with a GPS (global positioning system) positioner 8, and the acquired flue gas image data, the acquired second noise data and the acquired vibration wave data contain GPS positioning information, namely measurement position information.
Example 2
As shown in fig. 9 to 10, different from embodiment 1, the camera 231 may further be mounted at the top of the lifting mechanism 24 through a telescopic rod structure, the telescopic rod structure includes a telescopic inner rod 5 and a multi-stage telescopic rod 6, the bottom end of the telescopic inner rod 5 is sleeved in the sliding groove 7 on the upper surface of the screw rod 242, and the multi-stage telescopic rod 6 is vertically fixed at the top end of the telescopic inner rod 5 and is used for fixing the camera 231.
It should be noted that: the camera 231 adjusts the horizontal distance through multistage telescopic link 6, and through the vertical height of telescopic interior pole 5 upper and lower slip regulation in lead screw 242, it is fixed with lock spanner through bicycle seat regulation between telescopic interior pole 5 and the lead screw 242, sets up camera 231 in the top, compares and installs on flexible connecting piece 22 in the embodiment, and it is bigger to take the picture.
Example 3
The method for diagnosing the fault of the marine diesel engine by adopting the fault diagnosis device in the embodiment 1 or the embodiment 2 comprises the following diagnosis steps:
s1, respectively acquiring environmental data in the running process of the diesel engine in real time by using a first acquisition device 1 arranged in a contact manner inside the diesel engine and a second acquisition device 2 arranged in a non-contact manner outside the diesel engine;
s2, when the first acquisition device 1 alarms the fault of the diesel engine, taking the environmental data which are acquired by the second acquisition device 2 and correspond to the fault alarm type of the first acquisition device 1 as a fault threshold value;
and S3, deploying the second acquisition device 2 outside the diesel engine in a practical environment in a non-contact manner, acquiring environmental data of the diesel engine in the operation process in real time, and performing fault alarm according to the fault threshold.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A marine diesel engine fault diagnosis device is characterized in that: the system comprises a first acquisition device which is in contact with the diesel engine and acquires the internal operation environment data of the diesel engine in real time, a second acquisition device which is in non-contact with the diesel engine and acquires the external operation environment data of the diesel engine in real time, and a fault diagnosis system which is connected with the first acquisition device and the second acquisition device;
the first acquisition device comprises a plurality of first acquisition probes for acquiring the internal operating environment data of the diesel engine;
the second acquisition device comprises a data box, a second acquisition probe in communication connection with the data box through a bendable connecting piece, and a lifting mechanism for driving the data box and the acquisition assembly to be close to/far away from the diesel engine, wherein the bendable connecting piece is used for adjusting the position of the second acquisition probe;
the fault diagnosis system is used for receiving the environmental data collected by the first collection device and the second collection device, determining the environmental data collected by the second collection device and corresponding to the fault alarm type of the first collection device as the fault threshold value of the second collection device when the first collection device gives an alarm for the fault of the diesel engine, and utilizing the second collection device to monitor the diesel engine in the practical environment and to diagnose and alarm the fault of the diesel engine based on the fault threshold value.
2. The marine diesel engine failure diagnosis device according to claim 1, characterized in that: the first acquisition probe is one or more of a smoke sensor, a noise sensor and a vibration sensor which are arranged in the diesel engine and is respectively used for acquiring one or more of smoke composition data, first noise data and vibration data of the diesel engine.
3. The marine diesel engine failure diagnosis device according to claim 1, characterized in that: the second acquisition probe comprises one or more of a camera, a noise acquisition probe and a vibration wave acquisition probe;
the camera is used for collecting a smoke image in the operation process of the diesel engine, the camera is connected with an image recognition processing system, and the image recognition processing system is integrated in the data box and is used for recognizing the smoke color in the smoke image to obtain smoke image data based on the smoke color;
the noise acquisition probe is used for acquiring sound waves in the operation process of the diesel engine, the noise acquisition probe is connected with a noise filtering extraction system, the noise filtering extraction system is integrated in the data box, the acquired sound waves are processed based on the stored noise characteristics, noise in the sound waves is filtered out, the sound waves containing the noise characteristics are extracted, and the sound waves are digitized to obtain second noise data;
the vibration wave acquisition probe is used for transmitting radar waves to the surface of the diesel engine, the vibration wave acquisition probe is connected with the six-port continuous wave radar system, the six-port continuous wave radar system is integrated in the data box and receives radar echo signals reflected back after the radar waves reach the surface of the diesel engine, the radar echo phases under different vibrations can be changed, and vibration wave data based on the radar echo phases are obtained.
4. The marine diesel engine failure diagnosis device according to claim 3, characterized in that: the flexible connecting piece comprises a data line and a flexible shaped coiled pipe sleeved outside the data line, one end of the data line is connected with an interface on the data box through a plug, and the other end of the data line is connected with the camera/noise collection probe/vibration wave collection probe through a connector.
5. The marine diesel engine failure diagnosis device according to claim 5, characterized in that: the fault diagnosis system is arranged in the data box and comprises a central controller, a threshold value determination module and an alarm module;
the central controller is used for receiving the environmental data acquired by the first acquisition device and the second acquisition device and sending the environmental data to the threshold value determining module;
the threshold determination module is used for determining environmental data which are acquired by the second acquisition device and correspond to the fault alarm type of the first acquisition device as a fault threshold of the second acquisition device when the first acquisition device alarms the fault of the diesel engine;
the alarm module diagnoses and alarms the fault of the diesel engine based on the fault threshold value.
6. The marine diesel engine failure diagnosis device according to claim 5, characterized in that: the connector that camera, noise acquisition probe, vibration wave acquisition probe are connected all is provided with the GPS locator, contains GPS locating information in flue gas image data, the second noise data of collection, the vibration wave data, measures positional information promptly.
7. The marine diesel engine failure diagnosis device according to claim 6, characterized in that: the alarm module is connected with the intelligent terminal through the wireless module and used for sending fault alarm signals and measurement position information to the intelligent terminal to achieve remote alarm.
8. The marine diesel engine failure diagnosis device according to claim 1, characterized in that: the lifting mechanism comprises a mounting plate, a screw rod, a positioning rod and a sliding seat; the lead screw runs through the mounting panel and rotates with the mounting panel through the bearing to be connected, the slide sets up on the lead screw and cooperates with the lead screw, the locating lever is fixed in on the mounting panel and runs through slide and slide sliding connection, the data box is fixed in on the slide.
9. The marine diesel engine failure diagnosis device according to claim 3, characterized in that: the camera can also be installed in the elevating system top through telescopic rod structure, telescopic rod structure includes flexible inner pole, multi-stage telescopic link, flexible inner pole bottom end cover is located in the spout of lead screw upper surface, and multi-stage telescopic link vertical fixation sets up in the pole top in stretching out and drawing back, and is used for fixed camera.
10. A fault diagnosis method for a marine diesel engine is characterized by comprising the following diagnosis steps:
s1, respectively acquiring environmental data in the running process of the diesel engine in real time by using a first acquisition device arranged in a contact manner inside the diesel engine and a second acquisition device arranged in a non-contact manner outside the diesel engine;
s2, when the first acquisition device alarms the fault of the diesel engine, taking the environmental data acquired by the second acquisition device and corresponding to the fault alarm type of the first acquisition device as a fault threshold value;
and S3, deploying the second acquisition device outside the diesel engine in a practical environment in a non-contact manner, acquiring environmental data of the diesel engine in the operation process in real time, and performing fault alarm according to the fault threshold.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130424Y (en) * | 2007-12-15 | 2008-10-08 | 银川高新区慧泽园科技有限公司 | System for monitoring dynamic quality of diesel locomotive |
| CN102494899A (en) * | 2011-11-25 | 2012-06-13 | 华南理工大学 | Composite fault diagnosis method for diesel engine and diagnosis system |
| CN104865075A (en) * | 2014-02-26 | 2015-08-26 | 南京理工大学 | Marine diesel engine vibration signal analysis system and method thereof |
| CN109751127A (en) * | 2017-11-07 | 2019-05-14 | 新津县文井钻井工程有限公司 | A kind of drilling diesel engine group detection system |
| CN111157249A (en) * | 2020-01-08 | 2020-05-15 | 江苏科技大学 | Diesel engine fault monitoring and early warning method and device |
| CN111779573A (en) * | 2020-06-28 | 2020-10-16 | 河南柴油机重工有限责任公司 | Diesel engine online fault detection method and device |
| CN212482903U (en) * | 2020-07-14 | 2021-02-05 | 上海柴油机股份有限公司 | Fault diagnosis and control device for diesel engine |
-
2021
- 2021-08-25 CN CN202110978544.5A patent/CN113758714A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201130424Y (en) * | 2007-12-15 | 2008-10-08 | 银川高新区慧泽园科技有限公司 | System for monitoring dynamic quality of diesel locomotive |
| CN102494899A (en) * | 2011-11-25 | 2012-06-13 | 华南理工大学 | Composite fault diagnosis method for diesel engine and diagnosis system |
| CN104865075A (en) * | 2014-02-26 | 2015-08-26 | 南京理工大学 | Marine diesel engine vibration signal analysis system and method thereof |
| CN109751127A (en) * | 2017-11-07 | 2019-05-14 | 新津县文井钻井工程有限公司 | A kind of drilling diesel engine group detection system |
| CN111157249A (en) * | 2020-01-08 | 2020-05-15 | 江苏科技大学 | Diesel engine fault monitoring and early warning method and device |
| CN111779573A (en) * | 2020-06-28 | 2020-10-16 | 河南柴油机重工有限责任公司 | Diesel engine online fault detection method and device |
| CN212482903U (en) * | 2020-07-14 | 2021-02-05 | 上海柴油机股份有限公司 | Fault diagnosis and control device for diesel engine |
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