CN116357455A - Intelligent monitoring and management system for engine - Google Patents
Intelligent monitoring and management system for engine Download PDFInfo
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- CN116357455A CN116357455A CN202310511688.9A CN202310511688A CN116357455A CN 116357455 A CN116357455 A CN 116357455A CN 202310511688 A CN202310511688 A CN 202310511688A CN 116357455 A CN116357455 A CN 116357455A
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- lubricating oil
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 87
- 239000010687 lubricating oil Substances 0.000 claims abstract description 91
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 41
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000013500 data storage Methods 0.000 claims abstract description 11
- 238000007726 management method Methods 0.000 claims description 14
- 239000003921 oil Substances 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 abstract description 2
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/18—Indicating or safety devices
- F01M1/20—Indicating or safety devices concerning lubricant pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/10—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
- F02B77/089—Safety, indicating or supervising devices relating to engine temperature
Abstract
The invention discloses an intelligent monitoring and managing system of an engine, which comprises a lubricating oil system detection module, a monitoring module and a monitoring module, wherein the lubricating oil system detection module is used for acquiring lubricating oil data and chip data of the lubricating oil system of the engine and detecting faults of the lubricating oil system of the engine; the cooling system detection module is used for acquiring the operation parameters of the engine cooling system and detecting faults of the engine cooling system; the data cloud storage module is used for carrying out cloud storage on detection data and detection results of the lubricating oil system detection module and the cooling system detection module; and the operation monitoring module is used for extracting the storage data of the data cloud storage module and monitoring the engine according to the storage data. According to the invention, the wear of the engine gear bearing, the pipeline breakage fault and the cooling system fault are effectively identified, the analysis data are effectively stored through the XML data storage frame, and the historical data and the real-time data are displayed through the monitoring module, so that the real-time detection of the engine operation is realized.
Description
Technical Field
The invention belongs to the field of engine detection, and particularly relates to an intelligent engine monitoring and management system.
Background
The cooling system and the lubricating oil system of the automobile engine are often main parts of engine faults, after the cooling system has an accident, the cooling effect of the engine is affected, the temperature is high, engine oil and lubricating oil are rapidly carbonized, the engine is damaged, and the service life of the engine is shortened; the lubricating oil system is an important system for ensuring the normal operation of the engine, and has the main function of ensuring the lubrication and heat dissipation of friction parts of the engine. Lubricating oil exists in the place where friction parts exist in the engine, a plurality of parts are key parts of the engine and are positioned in the engine, fault symptoms are generally difficult to find, and meanwhile, the existing engine monitoring technology is difficult to realize management and control on the running state of the engine.
Disclosure of Invention
The invention aims to provide an intelligent engine monitoring and management system for solving the problems in the prior art.
In order to achieve the above purpose, the invention provides an intelligent engine monitoring and management system, which comprises a lubricating oil system detection module, a cooling system detection module, a data cloud storage module and an operation monitoring module;
the lubricating oil system detection module and the cooling system detection module are respectively connected with the data cloud storage module, and the data cloud storage module is connected with the operation monitoring module;
the lubricating oil system detection module is used for acquiring lubricating oil data and chip data of the engine lubricating oil system and detecting faults of the engine lubricating oil system;
the cooling system detection module is used for acquiring the operation parameters of the engine cooling system and detecting faults of the engine cooling system;
the data cloud storage module is used for carrying out cloud storage on detection data and detection results of the lubricating oil system detection module and the cooling system detection module;
and the operation monitoring module is used for extracting the storage data of the data cloud storage module and monitoring the engine according to the storage data.
Optionally, the lubricating oil system detection module comprises a skimming analysis unit and a lubricating oil monitoring module; the skimming analysis unit is used for judging whether the engine lubricating oil system fails according to skimming parameters in the engine; the lubricating oil monitoring module is used for monitoring the lubricating oil pressure, the lubricating oil temperature and the lubricating oil consumption of the engine.
Optionally, the chip parameters include chip content, components, shape, size and generation rate, the chip analysis unit identifies engine wear faults according to the chip parameters, constructs fault thresholds according to characteristics and discrimination criteria of different abrasive particles, and judges fault reasons according to the fault thresholds to identify fault positions.
Optionally, the lubricating oil monitoring module comprises a pressure monitoring unit, a temperature monitoring unit and a consumption monitoring unit;
the pressure monitoring unit is used for monitoring the pressure change of the engine lubricating oil in real time and judging the fault of the lubricating oil system according to the pressure change;
the temperature monitoring unit is used for monitoring the temperature change of the lubricating oil, judging whether the cooling surface of the heat exchanger is blocked or not and judging the wear degree of the gear or the bearing according to the temperature change;
the consumption monitoring unit is used for monitoring the consumption of the lubricating oil and the consumption rate of the lubricating oil, and judging whether the lubricating oil leakage fault occurs or not according to the consumption of the lubricating oil and the consumption rate of the lubricating oil.
Optionally, the pressure monitoring unit judges that an oil filter or a nozzle of an engine lubrication oil system is clogged, or a pressure release shutter is failed, when the lubrication oil pressure is increased; when the lubricating oil pressure is reduced, the pressure monitoring unit judges that a pipeline of the engine lubricating oil system is broken, lubricating oil is leaked, or a pressure regulating valve fails.
Optionally, the cooling system detection module calculates the dynamic flow of the cooling liquid by detecting the air flow and pressure of the cooling cylinder body of the engine, the cooling water temperature and the ambient temperature of the cylinder, detects the valve opening and the real-time working condition of the engine, and controls the size of the cooling water by controlling the valve opening according to the real-time working condition.
Optionally, the cooling system detection module comprises an air flow sensor, a temperature sensor and a rotation speed sensor, wherein the air flow sensor is arranged between an engine air filter and a throttle body and is used for measuring the intake air quantity of the engine, and the cooling system detection module determines the oil injection quantity according to the intake air quantity;
the temperature sensor is a thermistor type temperature sensor and is used for monitoring the air inlet temperature, the cooling liquid temperature, the fuel oil temperature and the exhaust temperature of the engine in real time;
the rotating speed sensor is a photoelectric speed sensor and is used for detecting the rotating speed of a driven shaft, the rotating speed of wheels and the rotating speed of a power transmission shaft of the engine.
Optionally, the data cloud storage module constructs a data storage frame according to the time sequence relation between the historical storage data and the detection data acquired in real time, and stores the storage data acquired in real time according to the data storage frame;
the data storage architecture is an XML architecture, in the XML architecture, according to the progressive sequence of the data acquisition time, the acquisition time is taken as a constraint condition, the detection data is taken as a detailed description under the time, meanwhile, the detection data of different acquisition times are stored according to the constraint condition, and the detection results of the same acquisition time are correspondingly stored.
Optionally, the operation monitoring module performs format unification on different parameters in the stored data, performs numerical value and table form display on the stored data, acquires numerical values of different parameters in the stored data, respectively constructs a change curve for each parameter according to the change of the numerical values and the acquisition time, and displays the change curve of each parameter.
The invention has the technical effects that:
the invention monitors the lubricating oil system and the cooling system which are easy to break down of the engine respectively, can effectively identify the abrasion of the gear bearing of the engine, the breakage failure of the pipeline and the failure of the cooling system, effectively saves analysis data through the XML data storage frame, ensures the stable operation of the engine by controlling the cooling water and the oil injection quantity of the engine, and displays the historical data and the real-time data through the monitoring module so as to realize the real-time detection of the operation of the engine.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:
fig. 1 is a schematic structural diagram of an intelligent engine monitoring and managing system in an embodiment of the invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Example 1
As shown in fig. 1, the embodiment provides an intelligent engine monitoring and management system, which comprises a lubricating oil system detection module, a cooling system detection module, a data cloud storage module and an operation monitoring module;
the lubricating oil system detection module and the cooling system detection module are respectively connected with the data cloud storage module, and the data cloud storage module is connected with the operation monitoring module;
the lubricating oil system detection module is used for acquiring lubricating oil data and chip data of the engine lubricating oil system and detecting faults of the engine lubricating oil system;
the cooling system detection module is used for acquiring the operation parameters of the engine cooling system and detecting faults of the engine cooling system;
the data cloud storage module is used for carrying out cloud storage on detection data and detection results of the lubricating oil system detection module and the cooling system detection module;
and the operation monitoring module is used for extracting the storage data of the data cloud storage module and monitoring the engine according to the storage data.
As a preferred embodiment of the present application, the lubricating oil system detection module includes a chip foam analysis unit and a lubricating oil monitoring module; the skimming analysis unit is used for judging whether the engine lubricating oil system fails according to skimming parameters in the engine; the lubricating oil monitoring module is used for monitoring the lubricating oil pressure, the lubricating oil temperature and the lubricating oil consumption of the engine.
As a preferred embodiment of the present application, the chip parameters include chip content, component, shape, size, and generation rate, and the chip analysis unit identifies an engine wear failure according to the chip parameters, constructs a failure threshold according to characteristics and discrimination criteria of different abrasive particles, and determines a failure cause according to the failure threshold to identify a failure location.
As a preferred embodiment of the present application, the lubricating oil monitoring module includes a pressure monitoring unit, a temperature monitoring unit, and a consumption monitoring unit;
the pressure monitoring unit is used for monitoring the pressure change of the engine lubricating oil in real time and judging the fault of the lubricating oil system according to the pressure change; when the lubricating oil pressure is increased, the pressure monitoring unit judges that the oil filter or the nozzle of the lubricating oil system of the engine is blocked or the pressure release valve is failed; when the lubricating oil pressure is reduced, the pressure monitoring unit judges that a pipeline of an engine lubricating oil system is broken, lubricating oil is leaked, or a pressure regulating valve fails;
the temperature monitoring unit is used for monitoring the temperature change of the lubricating oil, judging whether the cooling surface of the heat exchanger is blocked or not and judging the wear degree of the gear or the bearing according to the temperature change;
the consumption monitoring unit is used for monitoring the consumption of the lubricating oil and the consumption rate of the lubricating oil, and judging whether the lubricating oil leakage fault occurs or not according to the consumption of the lubricating oil and the consumption rate of the lubricating oil.
As a preferred embodiment of the application, the cooling system detection module calculates the dynamic flow of the cooling liquid by detecting the air flow and the pressure of the cooling cylinder body of the engine, the cooling water temperature and the ambient temperature of the cylinder, detects the valve opening and the real-time working condition of the engine, and controls the size of the cooling water by controlling the valve opening according to the real-time working condition.
As a preferred embodiment of the present application, the cooling system detection module includes an air flow sensor, a temperature sensor and a rotation speed sensor, where the air flow sensor is disposed between an engine air filter and a throttle body, and is used to measure the intake air amount of the engine, and the cooling system detection module determines the injection oil amount according to the intake air amount;
the temperature sensor is a thermistor type temperature sensor and is used for monitoring the air inlet temperature, the cooling liquid temperature, the fuel oil temperature and the exhaust temperature of the engine in real time;
the rotating speed sensor is a photoelectric speed sensor and is used for detecting the rotating speed of a driven shaft, the rotating speed of wheels and the rotating speed of a power transmission shaft of the engine.
As a preferred embodiment of the present application, the data cloud storage module constructs a data storage frame according to a time sequence relationship between historical storage data and detection data acquired in real time, and stores the storage data acquired in real time according to the data storage frame;
the data storage architecture is an XML architecture, in the XML architecture, according to the progressive sequence of the data acquisition time, the acquisition time is taken as a constraint condition, the detection data is taken as a detailed description under the time, meanwhile, the detection data of different acquisition times are stored according to the constraint condition, and the detection results of the same acquisition time are correspondingly stored.
As a preferred implementation manner of the method, the operation monitoring module performs format unification on different parameters in the stored data, displays the stored data in numerical values and table forms, acquires the numerical values of the different parameters in the stored data, constructs a change curve for each parameter according to the change of the numerical values and the acquisition time, and displays the change curve of each parameter.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a system, or as a computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The intelligent engine monitoring and managing system is characterized by comprising a lubricating oil system detection module, a cooling system detection module, a data cloud storage module and an operation monitoring module;
the lubricating oil system detection module and the cooling system detection module are respectively connected with the data cloud storage module, and the data cloud storage module is connected with the operation monitoring module;
the lubricating oil system detection module is used for acquiring lubricating oil data and chip data of the engine lubricating oil system and detecting faults of the engine lubricating oil system;
the cooling system detection module is used for acquiring the operation parameters of the engine cooling system and detecting faults of the engine cooling system;
the data cloud storage module is used for carrying out cloud storage on detection data and detection results of the lubricating oil system detection module and the cooling system detection module;
and the operation monitoring module is used for extracting the storage data of the data cloud storage module and monitoring the engine according to the storage data.
2. The intelligent engine monitoring and management system according to claim 1, wherein the lubricating oil system detection module comprises a skimming analysis unit and a lubricating oil monitoring module; the skimming analysis unit is used for judging whether the engine lubricating oil system fails according to skimming parameters in the engine; the lubricating oil monitoring module is used for monitoring the lubricating oil pressure, the lubricating oil temperature and the lubricating oil consumption of the engine.
3. The intelligent engine monitoring and management system according to claim 2, wherein the chip parameters comprise chip content, components, shape, size and generation rate, the chip analysis unit identifies engine wear faults according to the chip parameters, constructs fault thresholds according to characteristics and discrimination criteria of different abrasive particles, judges fault reasons according to the fault thresholds, and identifies fault positions.
4. The intelligent engine monitoring and management system according to claim 2, wherein the lubricating oil monitoring module comprises a pressure monitoring unit, a temperature monitoring unit and a consumption monitoring unit;
the pressure monitoring unit is used for monitoring the pressure change of the engine lubricating oil in real time and judging the fault of the lubricating oil system according to the pressure change;
the temperature monitoring unit is used for monitoring the temperature change of the lubricating oil, judging whether the cooling surface of the heat exchanger is blocked or not and judging the wear degree of the gear or the bearing according to the temperature change;
the consumption monitoring unit is used for monitoring the consumption of the lubricating oil and the consumption rate of the lubricating oil, and judging whether the lubricating oil leakage fault occurs or not according to the consumption of the lubricating oil and the consumption rate of the lubricating oil.
5. The intelligent engine monitoring and management system according to claim 4, wherein the pressure monitoring unit judges that an oil filter or a nozzle of an engine lubrication oil system is clogged or a pressure release valve is failed when the lubrication oil pressure is increased; when the lubricating oil pressure is reduced, the pressure monitoring unit judges that a pipeline of the engine lubricating oil system is broken, lubricating oil is leaked, or a pressure regulating valve fails.
6. The intelligent engine monitoring and management system according to claim 1, wherein the cooling system detection module calculates the dynamic flow of the cooling liquid by detecting the air flow and pressure of the engine cooling cylinder body, the cooling water temperature and the ambient temperature of the cylinder, detects the valve opening and the real-time working condition of the engine, and controls the size of the cooling water by controlling the valve opening according to the real-time working condition.
7. The intelligent engine monitoring and management system according to claim 6, wherein the cooling system detection module comprises an air flow sensor, a temperature sensor and a rotation speed sensor, wherein the air flow sensor is arranged between an engine air filter and a throttle body and is used for measuring the intake air quantity of the engine, and the cooling system detection module is used for determining the oil injection quantity according to the intake air quantity;
the temperature sensor is a thermistor type temperature sensor and is used for monitoring the air inlet temperature, the cooling liquid temperature, the fuel oil temperature and the exhaust temperature of the engine in real time;
the rotating speed sensor is a photoelectric speed sensor and is used for detecting the rotating speed of a driven shaft, the rotating speed of wheels and the rotating speed of a power transmission shaft of the engine.
8. The intelligent engine monitoring and management system according to claim 1, wherein the data cloud storage module constructs a data storage frame according to the time sequence relation between historical storage data and detection data acquired in real time, and stores the storage data acquired in real time according to the data storage frame;
the data storage architecture is an XML architecture, in the XML architecture, according to the progressive sequence of the data acquisition time, the acquisition time is taken as a constraint condition, the detection data is taken as a detailed description under the time, meanwhile, the detection data of different acquisition times are stored according to the constraint condition, and the detection results of the same acquisition time are correspondingly stored.
9. The intelligent engine monitoring and management system according to claim 1, wherein the operation monitoring module performs format unification on different parameters in stored data, performs numerical value and tabular display on the stored data, acquires numerical values of different parameters in the stored data, respectively constructs a change curve for each parameter according to the change of the numerical values and the acquisition time, and displays the change curve of each parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310511688.9A CN116357455A (en) | 2023-05-08 | 2023-05-08 | Intelligent monitoring and management system for engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310511688.9A CN116357455A (en) | 2023-05-08 | 2023-05-08 | Intelligent monitoring and management system for engine |
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| CN116357455A true CN116357455A (en) | 2023-06-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116572502A (en) * | 2023-07-12 | 2023-08-11 | 天津联维乙烯工程有限公司 | Granulator set detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116572502A (en) * | 2023-07-12 | 2023-08-11 | 天津联维乙烯工程有限公司 | Granulator set detection device |
| CN116572502B (en) * | 2023-07-12 | 2023-09-19 | 天津联维乙烯工程有限公司 | Granulator set detection device |
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