CN116517821A - Working condition detection method of mechanical pump in mass spectrometer - Google Patents
Working condition detection method of mechanical pump in mass spectrometer Download PDFInfo
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- CN116517821A CN116517821A CN202310482015.5A CN202310482015A CN116517821A CN 116517821 A CN116517821 A CN 116517821A CN 202310482015 A CN202310482015 A CN 202310482015A CN 116517821 A CN116517821 A CN 116517821A
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- mechanical pump
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000001819 mass spectrum Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001228 spectrum Methods 0.000 claims description 29
- 230000001133 acceleration Effects 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 208000024891 symptom Diseases 0.000 abstract description 4
- 238000004949 mass spectrometry Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical field of mechanical detection, and particularly relates to a method for detecting the working condition of a mechanical pump in a mass spectrometer. According to the invention, the working condition of the mass spectrum mechanical pump is detected in a predictive mode by arranging detection equipment; the detection equipment comprises a temperature sensor group, an accelerometer and a Hall sensor; the temperature sensor group is used for collecting the surface temperature of the mass spectrum mechanical pump; the vibration sensor is used for acquiring the vibration condition of the shell of the mass spectrum mechanical pump; the Hall sensor is used for knowing the surface leakage magnetic field intensity of the mass spectrum mechanical pump; firstly, acquiring an initial state of a 24h mass spectrum mechanical pump, and calibrating a normal state of the mass spectrum mechanical pump; setting an out-of-tolerance threshold value in formal operation, and analyzing the operation state of the mass spectrum mechanical pump; and when the difference value of the related data of the real-time running state and the calibrated normal state exceeds a threshold value, an alarm is sent. The invention can effectively improve the contradiction between the maintenance frequency and the fault occurrence probability, and timely reminds the maintenance frequency and the fault occurrence probability when the fault symptom occurs, thereby avoiding the shutdown in the production state.
Description
Technical Field
The invention belongs to the technical field of mechanical detection, and particularly relates to a method for detecting the working condition of a mechanical pump in a mass spectrometer.
Background
In the scenario of using mass spectrometry mechanical pumps, pump failure stall conditions are often encountered, affecting equipment use. The traditional method is to regularly overhaul and maintain; frequent maintenance and repair can lead to frequent stalling of the equipment, which can also lead to failure, and once failure occurs, the equipment has a larger influence. And can not be stopped in time before mechanical failure occurs.
The invention can effectively improve the contradiction between the maintenance frequency and the fault occurrence probability, and can prompt attention in time when fault symptoms occur, thereby avoiding shutdown in the production state.
Disclosure of Invention
The invention aims to provide a method for detecting the working condition of a mechanical pump in a mass spectrometer, which is used for improving the contradiction between the maintenance frequency and the fault occurrence probability, reminding attention in time when fault symptoms occur, and avoiding fault shutdown in a production state.
When the operating temperature, vibration and magnetic field leakage of the mechanical pump change greatly, the mechanical pump is considered to deviate from the normal operating state, and attention is needed in time. Therefore, the detection method of the mechanical pump working condition in the mass spectrum instrument is characterized in that detection equipment is arranged to detect the working condition of the mass spectrum mechanical pump in a pre-haired mode; the detection equipment comprises a temperature sensor group, an accelerometer and a Hall sensor; the method comprises the following specific steps:
(1) Arranging detection equipment;
a temperature sensor group is arranged on the surface of the pump housing of the mass spectrum mechanical pump and is used for collecting the surface temperature of the mass spectrum mechanical pump;
the accelerometer is arranged on the surface of the shell of the mass spectrum mechanical pump and is used for knowing the vibration condition of the shell of the mass spectrum mechanical pump;
the Hall sensor is arranged on the surface of the mass spectrum mechanical pump shell and is used for knowing the leakage magnetic field intensity of the surface of the mass spectrum mechanical pump.
(2) Acquiring an initial state of the mass spectrum mechanical pump for 24 hours, and calibrating a normal state of the mass spectrum mechanical pump, as shown in fig. 1; the specific process is as follows:
(2.1) acquiring data of a temperature sensor, an accelerometer and a Hall sensor;
(2.2) acquiring the temperature change rate and the change range within 24 hours, wherein the acquisition precision is less than 1 ℃;
(2.3) acquiring average acceleration frequency spectrum and magnetic force frequency spectrum within 24 hours by using FFT conversion on data acquired by accelerometer and Hall sensor data; the frequency spectrum range is 5-200Hz;
(2.4) manually setting a formal run-time out-of-tolerance threshold, comprising the following specific steps: average acceleration spectrum threshold and magnetic spectrum threshold, and temperature change rate threshold and change range threshold; typically, the average acceleration spectrum overrun threshold and the magnetic spectrum overrun threshold are respectively designed to be 2Hz, the temperature change rate threshold is 0.5 ℃ per minute, and the change range threshold is 2 ℃;
(2.5) storing the information, wherein the storage medium comprises a nonvolatile memory and a volatile memory;
the algorithm comprises the steps of acquiring the temperature change rate and the change range in the temperature sensor 24h for data acquired by the temperature sensor group; for data acquired by an accelerometer and a Hall sensor, acquiring an average acceleration frequency spectrum and a magnetic frequency spectrum within 24 hours by using FFT (fast Fourier transform); these obtained data and manually set run-allowed out-of-tolerance thresholds are saved.
(3) Analyzing the running state of the mass spectrum mechanical pump; repeating the operations (2.1), (2.2) and (2.3) in the step (2) to obtain data of average acceleration frequency spectrum, magnetic frequency spectrum, temperature change rate and temperature change range at the time, respectively calculating difference values with the corresponding data obtained in the step (2), and giving an alarm if the absolute value of the difference values is larger than the corresponding threshold value.
In the scenario of using mass spectrometry mechanical pumps, pump failure stall conditions are often encountered, affecting equipment use. The traditional method is to regularly overhaul and maintain; frequent maintenance and repair can lead to frequent stalling of the equipment, which can also lead to failure, and once failure occurs, the equipment has a larger influence. And can not be stopped in time before mechanical failure occurs.
The invention can effectively improve the contradiction between the maintenance frequency and the fault occurrence probability, and can prompt attention in time when fault symptoms occur, thereby avoiding shutdown in the production state.
Drawings
Fig. 1 is a calibration learning flow of a mass spectrometry mechanical pump in a normal state.
Fig. 2 is a flow chart of analysis of the operating state of a mass spectrometry mechanical pump.
Detailed Description
The invention provides a method for detecting the working condition of a mechanical pump in a mass spectrometer, which comprises the following steps:
1. laying detection equipment: a temperature sensor group, an accelerometer and a Hall sensor are respectively arranged on the surface of a pump housing of the mass spectrometer machine so as to acquire information such as the surface temperature of the machine pump, the vibration condition of a shell, the intensity of a surface leakage magnetic field and the like;
2. acquiring initial state data of the mechanical pump of the mass spectrum for 24 hours, processing the data through an algorithm, and completing calibration of the normal state of the mechanical pump to generate a historical data set;
3. analysis of mass spectrometry mechanical pump operating conditions: when the mass spectrum mechanical pump operates, data of a temperature sensor group, an accelerometer and a Hall sensor are collected in real time, the data are compared with a historical data set, and if the change rate or the change absolute value of the data exceeds a preset threshold range, an alarm signal is sent to prompt a worker to pay attention to the operation condition of the mechanical pump.
In an embodiment, different fault signs are identified by setting different thresholds, such as an average acceleration spectrum threshold and a magnetic force spectrum threshold, and a temperature change rate threshold and a range of change threshold. When the thresholds are triggered, the detection system can give an alarm to remind a worker to check the operation condition of the mechanical pump in time so as to avoid fault shutdown in the production state.
A laboratory detects the working condition of a mechanical pump in a mass spectrometer, and when the operating temperature condition, the vibration condition and the magnetic field leakage condition of the mechanical pump change greatly, the mechanical pump is considered to deviate from the normal operating state, and timely attention is needed. In order to achieve the aim, the mechanical pump working condition detection method in the mass spectrometer provided by the invention is adopted, and the working condition of the mass spectrum mechanical pump is detected in a predictive mode by arranging detection equipment.
The specific case is as follows:
1. a temperature sensor group is arranged on the surface of the pump housing of the mass spectrum mechanical pump and is used for collecting the surface temperature of the mass spectrum mechanical pump; the accelerometer is arranged on the surface of the shell of the mass spectrum mechanical pump and is used for knowing the vibration condition of the shell of the mass spectrum mechanical pump; the Hall sensor is arranged on the surface of the pump housing of the mass spectrum mechanical pump and is used for knowing the intensity of a leakage magnetic field on the surface of the mass spectrum mechanical pump;
2. acquiring an initial state of the mass spectrum mechanical pump for 24 hours, and completing calibration of a normal state of the mass spectrum mechanical pump; the specific process is as follows:
a. collecting data of a temperature sensor group, and then obtaining the change rate and the change range in the temperature sensor 24 h; the acquisition precision is 0.5 ℃; obtaining the temperature change amount of 4.6 ℃ for 24 hours;
b. calculating to obtain the frequency spectrums of the accelerometer and the Hall sensor, wherein the acquisition range is 5-200Hz, and the acquisition resolution is 1Hz; the allowable out-of-tolerance range of 2Hz is set manually, and the allowable out-of-tolerance range is stored and used as an alarm threshold;
c. the information is stored, and the storage medium comprises a nonvolatile memory and a volatile memory.
And analyzing the running state of the mass spectrum mechanical pump, collecting sensor data, performing the same calculation, comparing the sensor data with historical data, and sending out an alarm if the change rate or the absolute value of the change exceeds a threshold range. The specific process is as follows:
a. collecting temperature, acceleration and Hall sensor data;
b. acquiring a 24-hour temperature change rate and a change range; the temperature change was 5.2 degrees celsius;
c. acquiring an average acceleration frequency spectrum threshold value and a magnetic frequency spectrum threshold value within 24 hours; the average acceleration frequency spectrum out-of-tolerance threshold and the magnetic frequency spectrum out-of-tolerance threshold are respectively 6.8Hz and 6.3Hz;
d. and comparing the historical data, wherein the temperature change rate and the change range do not accord with the threshold value, and if the acceleration frequency spectrum threshold value and the magnetic frequency spectrum are larger than the threshold value, the alarm condition is met, and the system sends out an alarm signal.
Claims (2)
1. A method for detecting the working condition of a mechanical pump in a mass spectrometer is characterized in that the working condition of the mechanical pump of the mass spectrometer is detected in a predictive mode by arranging detection equipment; the detection equipment comprises a temperature sensor group, an accelerometer and a Hall sensor; the method comprises the following specific steps:
(1) Arranging detection equipment;
a temperature sensor group is arranged on the surface of the pump housing of the mass spectrum mechanical pump and is used for collecting the surface temperature of the mass spectrum mechanical pump;
the accelerometer is arranged on the surface of the shell of the mass spectrum mechanical pump and is used for knowing the vibration condition of the shell of the mass spectrum mechanical pump;
the Hall sensor is arranged on the surface of the pump housing of the mass spectrum mechanical pump and is used for knowing the intensity of a leakage magnetic field on the surface of the mass spectrum mechanical pump;
(2) The method comprises the steps of collecting an initial state of a 24h mass spectrum mechanical pump, and calibrating a normal state of the mass spectrum mechanical pump, wherein the specific flow is as follows:
(2.1) acquiring data of a temperature sensor, an accelerometer and a Hall sensor;
(2.2) acquiring the temperature change rate and the change range within 24 hours, wherein the acquisition precision is less than 1 ℃;
(2.3) acquiring average acceleration frequency spectrum and magnetic force frequency spectrum within 24 hours by using FFT conversion on data acquired by accelerometer and Hall sensor data; the frequency spectrum range is 5-200Hz;
(2.4) manually setting a formal run-time out-of-tolerance threshold, comprising the following specific steps: average acceleration spectrum threshold and magnetic spectrum threshold, and temperature change rate threshold and change range threshold;
(2.5) storing the obtained data;
(3) Analyzing the running state of the mass spectrum mechanical pump; repeating the operations (2.1), (2.2) and (2.3) in the step (2) to obtain data of average acceleration frequency spectrum, magnetic frequency spectrum, temperature change rate and temperature change range at the time, respectively calculating difference values with the corresponding data obtained in the step (2), and giving an alarm if the absolute value of the difference values is larger than the corresponding threshold value.
2. The method according to claim 1, wherein in the step (2.4), the average acceleration spectrum threshold and the magnetic spectrum threshold are designed to be 1Hz, the temperature change rate threshold is 0.5 degrees celsius per minute, and the change range threshold is 1 degree celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310482015.5A CN116517821A (en) | 2023-04-28 | 2023-04-28 | Working condition detection method of mechanical pump in mass spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310482015.5A CN116517821A (en) | 2023-04-28 | 2023-04-28 | Working condition detection method of mechanical pump in mass spectrometer |
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| Publication Number | Publication Date |
|---|---|
| CN116517821A true CN116517821A (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310482015.5A Pending CN116517821A (en) | 2023-04-28 | 2023-04-28 | Working condition detection method of mechanical pump in mass spectrometer |
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| CN (1) | CN116517821A (en) |
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2023
- 2023-04-28 CN CN202310482015.5A patent/CN116517821A/en active Pending
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