CN112858123A - Calibration device and calibration method for lubricating oil granularity sensor - Google Patents
Calibration device and calibration method for lubricating oil granularity sensor Download PDFInfo
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- CN112858123A CN112858123A CN202110412482.1A CN202110412482A CN112858123A CN 112858123 A CN112858123 A CN 112858123A CN 202110412482 A CN202110412482 A CN 202110412482A CN 112858123 A CN112858123 A CN 112858123A
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 115
- 239000002245 particle Substances 0.000 claims abstract description 70
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000010724 circulating oil Substances 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000321817 Nasa Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a calibration device and a calibration method of a lubricating oil granularity sensor, wherein the calibration device comprises a lubricating oil tank, a main oil pump, a defoaming module, a standard oil way and a to-be-detected oil way, wherein the lubricating oil tank, the main oil pump and the defoaming module are arranged in a main oil way, and the standard oil way and the to-be-detected oil way are connected in parallel in the main oil way; and a second flow regulating valve, a second flowmeter, a second pressure stabilizing buffer tank, a to-be-detected granularity sensor and a second circulating oil pump are sequentially arranged on the to-be-detected oil path. The method comprises the following steps: and adjusting the influence factors in the standard oil way and the oil way to be detected to be consistent, reading the standard particle size sensor and the particle size sensor to be detected respectively when the circulation of the lubricating oil with the known particle size in the device reaches a steady state, obtaining calibration data according to the reading values, and analyzing the accuracy of the particle size sensor to be detected. The invention has the advantages of simple operation, high measurement precision and high analysis speed.
Description
Technical Field
The invention belongs to the technical field of measurement, relates to a calibration device of a lubricating oil granularity sensor, and particularly relates to a calibration method of the lubricating oil granularity sensor.
Background
In recent years, devices are continuously enlarged, complicated and intelligentized, and in view of lag and low efficiency of traditional data acquisition and laboratory analysis information, the lubricating oil online monitoring technology is promoted to a certain extent as a technical means for monitoring the safety and reliability of the devices in real time. The precise sensing technology is the premise of realizing the quality of the lubricating oil and the running state of equipment, and the sensor is an important guarantee for realizing remote monitoring.
The granularity of the lubricating oil can give the size and the number of particles contained in the oil, is a basis for judging the total wear amount of mechanical equipment, the severity degree of wear and the type of wear, and is an important index for analyzing the pollution degree of the lubricating oil, so that the granularity of the lubricating oil is very necessary to monitor. However, lubricating oil granularity sensors provided by various manufacturers on the market at present have different quality, the engineering application research of the granularity sensors is less, an online monitoring simulation platform needs to be built, the sensors can be put into use only by performing precision calibration and evaluation, the scheme in the technical field of measurement is almost blank, and professional technology and equipment are difficult to realize, so that the device and the method for calibrating the lubricating oil granularity sensors are provided, the idea and the method are provided for calibrating and evaluating the accuracy of the lubricating oil granularity sensors, the actual requirements are met on the basis of simple operation and low cost, and the measuring efficiency is improved.
Disclosure of Invention
The technical problem is as follows: aiming at the defects of the prior art, the invention provides a calibration device and a calibration method for a lubricating oil particle size sensor, provides a solution for the problems of calibration and accuracy detection of the lubricating oil particle size sensor under a dynamic working condition, and has the advantages of high measurement precision, excellent performance, simple operation and lower cost.
The technical scheme is as follows: the calibration device of the lubricating oil granularity sensor comprises a lubricating oil tank, a main oil pump, a main oil way, a defoaming module, a standard oil way, an oil way to be tested, a first flow regulating valve, a second flow regulating valve, a first flowmeter, a second flowmeter, a first pressure stabilizing buffer tank, a second pressure stabilizing buffer tank, the standard granularity sensor, the granularity sensor to be tested, a first metering pump, a second metering pump, a standard data transmission line, a data transmission line to be tested and an upper computer. The lubricating oil tank, the main oil pump and the defoaming module are sequentially arranged in the main oil circuit, the standard oil circuit and the oil circuit to be tested are connected in parallel in the main oil circuit and are positioned between the defoaming module and the lubricating oil tank, and the standard oil circuit is sequentially provided with a first flow regulating valve, a first flow meter, a first pressure stabilizing buffer tank, a standard granularity sensor and a first metering pump; and the oil path to be measured is sequentially provided with a second flow regulating valve, a second flow meter, a second pressure stabilizing buffer tank, a granularity sensor to be measured and a second metering pump.
Furthermore, the lubricating oil tank is vertically arranged, the top of the lubricating oil tank is provided with an oil liquid injection port and an oil liquid inlet, and the side surface of the lubricating oil tank is provided with a stirring device;
further, the upper part of the lubricating oil tank is cylindrical or tetragonal, and the lower part of the lubricating oil tank is conical or tetragonal;
furthermore, an oil outlet of the lubricating oil tank is positioned at the vertex of the cone or the rectangular pyramid and is connected with the main oil way;
furthermore, the specifications and the models of the first flow regulating valve and the second flow regulating valve are the same; the specifications and the models of the first flowmeter and the second flowmeter are the same; the first pressure stabilizing buffer tank and the second pressure stabilizing buffer tank have the same specification and model; the first metering pump and the second metering pump are identical in specification and model.
Furthermore, the standard oil way and the pipe material of the oil way to be detected have the same pipe diameter and length;
furthermore, the standard oil way and the oil way to be detected are horizontally arranged and are parallel to each other;
furthermore, a first flow regulating valve, a first flow meter, a first pressure stabilizing buffer tank and a first metering pump on the standard oil way are installed at the same corresponding positions with a second flow regulating valve, a second flow meter, a second pressure stabilizing buffer tank and a second metering pump on the oil way to be measured, and the corresponding connecting lines are vertical to the flowing direction of the oil liquid and are horizontally arranged.
Further, the first pressure stabilizing buffer tank and the second pressure stabilizing buffer tank are cylindrical, and the pipe diameter is at least 3 times of that of the standard oil way/the oil way to be detected;
further, the diameter of the main oil way is at least more than 2 times of that of a standard oil way/an oil way to be detected;
furthermore, the standard particle size sensor and the particle size sensor to be detected are connected with a USB interface of an upper computer through a standard data transmission line and a data transmission line to be detected, and the upper computer receives and displays the detection data;
a calibration method of a lubricating oil particle size sensor is applied to the calibration device of the lubricating oil particle size sensor, and comprises the following steps:
step S1: the calibration device of the lubricating oil granularity sensor is installed according to the technical scheme, and the device is washed clean;
step S2: pouring the well-mixed lubricating oil with known particle size and concentration range into a lubricating oil tank through an oil liquid injection port, sealing the lubricating oil tank, and starting a stirring device;
step S3: starting flow regulating valves, flowmeters, metering pumps and sensors in the main oil pump, the standard oil way of the defoaming module and the oil way to be detected;
step S4: observing the readings of the first flowmeter and the second flowmeter, and adjusting the first flow regulating valve and the second flow regulating valve to enable the standard oil way and the oil way to be measured to have the same flow when the flows are inconsistent;
step S5: when the lubricating oil circulates in the device for enough time to reach a steady state, namely the fluctuation range of the readings of the two sensors is very small, the granularity detection data in at least 5 adjacent continuous time periods are recorded and the average value is taken;
step S6: through comparing and analyzing the reading values of the standard particle size sensor and the particle size sensor to be detected, calculating the indicating value error of the particle size sensor to be detected in the particle size and concentration range, fitting the particle size deviation and the slope to obtain calibration data, and judging the accuracy of the sensor to be detected;
step S7: changing the concentration range of the lubricating oil particles and the particle size range of the added particles, repeating the steps from two to six, and calibrating the particle size sensor under different conditions.
Has the advantages that: the calibration device and the calibration method for the lubricating oil granularity sensor have the advantages of simple structure, easy realization, accuracy, conciseness and easy operation. The real circulation system of the simulated lubricating oil is unique in control variable, and detection data of the lubricating oil in a flowing state are contrastingly analyzed, so that the purpose of calibrating the granularity sensor is achieved, interference factors and uncertain factors are effectively reduced, the referential performance of a result is guaranteed, the applicability of the system is improved, meanwhile, the accuracy of the system can be analyzed, and the type selection and the use of workers are facilitated.
Drawings
FIG. 1 is a schematic diagram of a calibration apparatus for a sensor of particle size in lubricating oil according to the present invention;
the designations in the drawings have the following meanings: 1-lubricating oil tank, 2-main oil pump, 3-main oil circuit, 4-defoaming module, 5-standard oil circuit, 6-oil circuit to be tested, 7-first flow regulating valve, 8-second flow regulating valve, 9-first flow meter, 10-second flow meter, 11-first pressure stabilizing buffer tank, 12-second pressure stabilizing buffer tank, 13-standard granularity sensor, 14-granularity sensor to be tested, 15-first metering pump, 16-second metering pump, 17-standard data transmission line, 18-data transmission line to be tested, 19 upper computer, 101-oil liquid injection port, 102-stirring device, 103-oil liquid inlet and 104-oil liquid outlet.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
Example one
As shown in fig. 1, a calibration device for a lubricating oil particle size sensor includes a lubricating oil tank 1, a main oil pump 2, a main oil path 3, a defoaming module 4, a standard oil path 5, an oil path to be measured 6, a first flow regulating valve 7, a second flow regulating valve 8, a first flow meter 9, a second flow meter 10, a first pressure stabilizing buffer tank 11, a second pressure stabilizing buffer tank 12, a standard particle size sensor 13, a particle size sensor to be measured 14, a first metering pump 15, a second metering pump 16, a standard data transmission line 17, a data transmission line to be measured 18, and an upper computer 19. The specific connection mode is that the lubricating oil tank 1, the main oil pump 2 and the defoaming module 4 are sequentially arranged in the main oil way 3, and the defoaming module removes air bubbles in the system, so that the detection result is prevented from being influenced; the standard oil way 5 and the oil way 6 to be measured are connected in parallel in the main oil way 3 and are positioned between the defoaming module 4 and the lubricating oil tank 1, and a first flow regulating valve 7, a first flow meter 9, a first pressure stabilizing buffer tank 11, a standard granularity sensor 13 and a first metering pump 15 are sequentially arranged on the standard oil way 4; and the oil path to be measured is sequentially provided with a second flow regulating valve 8, a second flow meter 10, a second pressure stabilizing buffer tank 12, a granularity sensor 14 to be measured and a second metering pump 16.
Preferably, the upper part of the lubricating oil tank 1 is cylindrical or rectangular, and the lower part is conical or quadrangular; the lubricating oil tank 1 is vertically arranged, the top of the lubricating oil tank is provided with an oil liquid injection port 101 and an oil liquid inlet 103, and the side surface of the lubricating oil tank is provided with a stirring device 102; the oil outlet 104 of the lubricating oil tank 1 is positioned at the tip part of a cone or a rectangular pyramid and is connected with the main oil path 3.
Preferably, the specifications and the models of the first flow regulating valve 7, the second flow regulating valve 8, the first flow meter 9, the second flow meter 10, the first pressure stabilizing buffer tank 11, the second pressure stabilizing buffer tank 12, the first metering pump 15 and the second metering pump 16 are the same; the first flow regulating valve 7 and the second flow regulating valve 8, the first flowmeter 9 and the second flowmeter 10, the first pressure stabilizing buffer tank 11 and the second pressure stabilizing buffer tank 12, and the first metering pump 15 and the second metering pump 16 are horizontally arranged, are arranged on the same positions of the standard oil way 5 and the oil way 6 to be measured, and are vertical to the flowing direction of oil liquid; the first pressure stabilizing buffer tank 11 and the second pressure stabilizing buffer tank 12 are cylindrical, and the pipe diameter is at least 3 times of that of the standard oil way 5;
preferably, the standard oil path 5 is identical to the oil path 6 to be measured in pipe diameter and length; the standard oil way 5 and the oil way 6 to be measured are horizontally arranged and are parallel to each other; the pipe diameter of the main oil way 3 is at least more than 2 times of that of the standard oil way 5.
Preferably, the standard particle size sensor 13 and the particle size sensor 14 to be detected are connected with a USB interface of an upper computer 19 through a standard data transmission line 17 and a data transmission line 18 to be detected, and the upper computer 19 receives and displays the detection data.
In a specific implementation, the readings of the standard particle size sensor 13 and the particle size sensor 14 to be detected adopt the same pollution level classification standard, for example, the detection results of the particle size are respectively displayed in five particle size ranges of 5-15 μm, 15-25 μm, 25-50 μm, 50-100 μm, and >100 μm when the pollution level classification standard of nasas 1638 is adopted. The data communication between the two sensors and the upper computer 19 adopts the communication mode and protocol in the sensor specification and the matching of the types of the data transmission lines.
Example two
The calibration method of the lubricating oil particle size sensor in the embodiment is based on the calibration device of the lubricating oil particle size sensor, and the calibration of the particle size sensor to be measured is realized by comparing the indicating values of the standard particle size sensor and the particle size sensor to be measured, and the calibration method comprises the following steps: step S1: the calibration device of the lubricating oil granularity sensor is installed according to the technical scheme, and the device is washed clean; step S2: pouring the well-mixed lubricating oil with known particle size and concentration range into a lubricating oil tank through an oil liquid injection port, sealing the lubricating oil tank, and starting a stirring device; step S3: starting flow regulating valves, flowmeters, metering pumps and sensors in the main oil pump, the standard oil way of the defoaming module and the oil way to be detected; step S4: observing the readings of the first flowmeter and the second flowmeter, and adjusting the first flow regulating valve and the second flow regulating valve to enable the standard oil way and the oil way to be measured to have the same flow when the flows are inconsistent; step S5: when the lubricating oil circulates in the device for enough time to reach a steady state, namely the fluctuation range of the readings of the two sensors is very small, the granularity detection data in at least 5 adjacent continuous time periods are recorded and the average value is taken; step S6: through comparing and analyzing the reading values of the standard particle size sensor and the particle size sensor to be detected, calculating the indicating value error of the particle size sensor to be detected in the particle size and concentration range, fitting the particle size deviation and the slope to obtain calibration data, and judging the accuracy of the sensor to be detected; step S7: changing the concentration range of the lubricating oil particles and the particle size range of the added particles, repeating the steps from two to six, and calibrating the particle size sensor under different conditions.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.
Claims (10)
1. A calibration device for a lubricating oil particle size sensor is characterized by comprising a lubricating oil tank (1), a main oil pump (2), a main oil way (3), a defoaming module (4), a standard oil way (5), an oil way to be detected (6), a first flow regulating valve (7), a second flow regulating valve (8), a first flow meter (9), a second flow meter (10), a first pressure stabilizing buffer tank (11), a second pressure stabilizing buffer tank (12), a standard particle size sensor (13), a particle size sensor to be detected (14), a first metering pump (15), a second metering pump (16), a standard data transmission line (17), a data transmission line to be detected (18) and an upper computer (19), wherein the lubricating oil tank (1), the main oil pump (2) and the defoaming module (4) are sequentially installed in the main oil way (3), the standard oil way (5) and the oil way to be detected (6) are connected in the main oil way (3) in parallel, the standard oil way (4) is positioned between the defoaming module (4) and the lubricating oil tank (1), and a first flow regulating valve (7), a first flow meter (9), a first pressure stabilizing buffer tank (11), a standard granularity sensor (13) and a first metering pump (15) are sequentially arranged on the standard oil way (4); and the oil path to be measured is sequentially provided with a second flow regulating valve (8), a second flow meter (10), a second pressure stabilizing buffer tank (12), a granularity sensor to be measured (14) and a second metering pump (16).
2. The calibration device for a lubricant particle size sensor according to claim 1, characterized in that the upper part of the lubricant tank (1) is cylindrical or rectangular and the lower part is conical or rectangular.
3. The calibration device for the lubricating oil granularity sensor according to the claim 1, characterized in that the lubricating oil tank (1) is arranged vertically, the top is provided with an oil inlet (101) and an oil inlet (103), the side is provided with a stirring device (102), and the oil outlet (104) is positioned at the vertex of a cone or a rectangular pyramid and is connected with the main oil path (3).
4. A calibration device for a sensor of particle size in lubricating oil according to claim 1, 2 or 3, characterized in that the first flow regulating valve (7) and the second flow regulating valve (8) are of the same size and type; the specifications and the models of the first flowmeter (9) and the second flowmeter (10) are the same; the specifications and the models of the first pressure stabilizing buffer tank (11) and the second pressure stabilizing buffer tank (12) are the same; the first metering pump (15) and the second metering pump (16) have the same specification and model.
5. The calibrating device for the lubricating oil particle size sensor according to claim 1, 2 or 3, characterized in that the first flow regulating valve (7), the first flow meter (9), the first pressure stabilizing buffer tank (11) and the first metering pump (15) on the standard oil path (5) and the second flow regulating valve (8), the second flow meter (10), the second pressure stabilizing buffer tank (12) and the second metering pump (16) on the oil path (6) to be measured are installed at the same corresponding positions, and the corresponding connecting lines are perpendicular to the oil flow direction and horizontally arranged.
6. The calibrating device for the lubricating oil particle size sensor according to claim 1, 2 or 3, wherein the first pressure stabilizing buffer tank (11) and the second pressure stabilizing buffer tank (12) are cylindrical, and the pipe diameter is at least 3 times of the pipe diameter of the standard oil way (5)/the oil way to be measured (6).
7. The calibrating device for the lubricating oil particle size sensor according to claim 1, 2 or 3, wherein the standard oil path (5) and the oil path (6) to be measured are horizontally arranged and are parallel to each other, and the pipe material, the pipe diameter and the length are the same.
8. A calibration device for a sensor of particle size in lubricating oil according to claim 1, 2 or 3, characterized in that the diameter of the main oil path (3) is at least 2 times of the standard oil path (5)/the oil path (6).
9. The calibrating device for the lubricating oil particle size sensor is characterized in that the standard particle size sensor (13) and the particle size sensor (14) to be measured are connected with a USB interface of an upper computer (19) through a standard data transmission line (17) and a data transmission line (18) to be measured, and the upper computer (19) receives and displays the detection data.
10. A method for calibrating a lubricant particle size sensor, applied to the calibration device of a lubricant particle size sensor according to any one of claims 1 to 9, comprising the steps of:
step S1: the calibration device of the lubricating oil granularity sensor is installed according to the technical scheme, and the device is washed clean;
step S2: pouring the well-mixed lubricating oil with known particle size and concentration range into a lubricating oil tank through an oil liquid injection port, sealing the lubricating oil tank, and starting a stirring device;
step S3: starting flow regulating valves, flowmeters, metering pumps and sensors in the main oil pump, the standard oil way of the defoaming module and the oil way to be detected;
step S4: observing the readings of the first flowmeter and the second flowmeter, and adjusting the first flow regulating valve and the second flow regulating valve to enable the standard oil way and the oil way to be measured to have the same flow when the flows are inconsistent;
step S5: when the lubricating oil circulates in the device for enough time to reach a steady state, namely the fluctuation range of the readings of the two sensors is very small, the granularity detection data in at least 5 adjacent continuous time periods are recorded and the average value is taken;
step S6: through comparing and analyzing the reading values of the standard particle size sensor and the particle size sensor to be detected, calculating the indicating value error of the particle size sensor to be detected in the particle size and concentration range, fitting the particle size deviation and the slope to obtain calibration data, and judging the accuracy of the sensor to be detected;
step S7: changing the concentration range of the lubricating oil particles and the particle size range of the added particles, repeating the steps from two to six, and calibrating the particle size sensor under different conditions.
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| CN202110412482.1A CN112858123A (en) | 2021-04-16 | 2021-04-16 | Calibration device and calibration method for lubricating oil granularity sensor |
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| CN202110412482.1A CN112858123A (en) | 2021-04-16 | 2021-04-16 | Calibration device and calibration method for lubricating oil granularity sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859021A (en) * | 2022-05-13 | 2022-08-05 | 江苏徐工工程机械研究院有限公司 | Calibration method and device for lubricating oil pollution degree sensor |
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2021
- 2021-04-16 CN CN202110412482.1A patent/CN112858123A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114859021A (en) * | 2022-05-13 | 2022-08-05 | 江苏徐工工程机械研究院有限公司 | Calibration method and device for lubricating oil pollution degree sensor |
| CN114859021B (en) * | 2022-05-13 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Calibration method and device for lubricating oil pollution degree sensor |
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