CN210221834U - Rapid quantitative measurement system for oil sludge of electric power oil - Google Patents
Rapid quantitative measurement system for oil sludge of electric power oil Download PDFInfo
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- CN210221834U CN210221834U CN201920755387.XU CN201920755387U CN210221834U CN 210221834 U CN210221834 U CN 210221834U CN 201920755387 U CN201920755387 U CN 201920755387U CN 210221834 U CN210221834 U CN 210221834U
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Abstract
The utility model discloses a quick quantitative measurement system for oil and sludge in electric power, which comprises a centrifugal system, a positioning system, a light source system, an image acquisition system and a sludge content detector, and has the functions of centrifugation, positioning, sludge optical imaging and sludge content measurement; the centrifugal motor of the centrifugal system of the utility model is fixed on a centrifugal support, a centrifugal hanging frame is arranged on the shaft of the centrifugal motor, the centrifugal hanging frame is connected with a centrifugal hanging cup and is provided with a positioning iron nail, a magnetic proximity sensor is arranged at the upper end of the centrifugal support, a parallel backlight source is arranged on the side surface of the centrifugal support, and a shock absorber is arranged at the bottom of the centrifugal support; the utility model discloses the system can be shot the fatlute sediment of different fluid samples, and the accurate fatlute content that acquires, and easy operation easily realizes.
Description
Technical Field
The utility model relates to a quick quantitative measurement technical field of oil sludge for electric power, in particular to quick quantitative measurement system of oil sludge for electric power.
Background
The end product of the deep degradation of the electrical oil is sludge, which adheres to the insulation, the walls of the transformer's shell edges, accelerating the insulation breakdown, causing insulation shrinkage, affecting heat dissipation. The content of the sludge in the oil is related to the degradation degree of the oil, and the more the sludge is, the greater the damage to equipment is, so that the current maintenance management guidelines of the turbine oil and the fire-resistant oil have specific requirements on the content of the sludge in the operating oil and the like.
The existing oil sludge detection method cannot be applied to on-site rapid detection due to the complex detection process and the long time (the result can be obtained only after a few days), and the important role of oil sludge detection in oil quality supervision is restricted. If the content of the oil sludge can be measured within half an hour or even several minutes, the degradation degree of various electric oil and the recovery degree of the performance of the oil product after regeneration can be judged on the oil using site, and a quick and effective detection means is provided for judging the degradation state of the oil product.
The detection of the electric oil sludge is only laboratory inspection detection, and mainly comprises quantitative detection and qualitative detection. The method is characterized in that an organic solvent is used for dissolving and centrifuging an oil sample for quantitative detection, the weight of the oil sample is constant after elution for multiple times, however, the steps of elution of the solvent, balance constant weight and the like have great influence on a test result, the mass fraction of the oil sludge is finally given, and the method is long in time consumption and complex in process. Qualitative detection is relatively simple, usually to provide "with" and "without" results, but it is also time consuming. Therefore, a new method must be researched, which can not only realize rapid detection and ensure the timeliness of the detection result, but also ensure the accuracy of the detection result.
In order to avoid and reduce the influence of external factors on a test result as much as possible and ensure that the test result is accurate, the method for directly carrying out quantitative measurement by using optical imaging after centrifugal separation is the fastest and accurate method in carrying out electric oil-sludge separation and quantification.
Disclosure of Invention
In order to overcome the problem that above-mentioned prior art exists, the utility model aims at providing a quick quantitative measurement system of oil fatlute for electric power, this system can shoot the fatlute sediment of different fluid samples, and the accurate fatlute content that acquires, and easy operation easily realizes.
The technical scheme adopted for solving the technical problems is as follows:
a quick quantitative measurement system for oil sludge in electric power oil comprises a shell 6, a centrifugal system, a positioning system, a light source system, an image acquisition system and an oil sludge content detector 5 which are arranged in the shell 6, and the system has the functions of centrifugation, positioning, oil sludge optical imaging and oil sludge content measurement;
the centrifugal system comprises a centrifugal motor 11, a motor driver 12, a centrifugal bracket 13, a centrifugal hanger 14, a centrifugal hanger cup 15 and a shock absorber 16; the centrifugal motor 11 is fixed at the bottom of the centrifugal support 13, the motor driver 12 is a motor driver matched with the centrifugal motor 11, is connected with the centrifugal motor 11 through a cable, is fixedly arranged in the shell 6, controls the rotating speed of the centrifugal motor 11 through the motor driver 12, and the centrifugal support 13 is used for fixing the centrifugal motor 11, the positioning system and the parallel backlight source 31; the centrifugal hanging frame 14 is arranged on the centrifugal motor 11, the two ends of the centrifugal hanging frame 14 are provided with symmetrical centrifugal hanging cups 15, the upper parts of the centrifugal hanging cups 15 are provided with hanging points which can be hung on the centrifugal hanging frame 14, the appearance of the centrifugal hanging cups is the same as that of a centrifugal tube, the bottom of the centrifugal tube is an opening and is exposed outside, and the shock absorber 16 is connected with the centrifugal support 13 and the shell 6;
the positioning system comprises an electromagnetic proximity sensor 21 and a positioning iron nail 22, the electromagnetic proximity sensor 21 is fixed at the top end of the centrifugal support 13, the electromagnetic proximity sensor 21 is positioned between the centrifugal hanger 14 and the centrifugal motor 11, and the electromagnetic proximity sensor 21 is connected with the motor driver 12 through a cable; the positioning iron nail 22 is fixed on the lower bottom surface of the centrifugal hanging rack 14 and is used for positioning the electromagnetic induction centrifugal hanging rack 14 in the centrifugal process;
the light source system comprises a light source controller 32 and a parallel backlight source 31, wherein the parallel backlight source 31 is positioned on the side surface of the centrifugal bracket 13, is tightly attached to one side of the centrifugal motor 11, is opposite to the image acquisition system, is connected with the light source controller 32 through a cable, and provides a background light source for image acquisition; the light source controller 32 is fixedly arranged in the shell 6;
the image acquisition system comprises an image sensor 41 and a lens 42, and the image acquisition system 4 is positioned in the shell 6 and outside the centrifugal system 1; the image sensor 41 is connected with the lens 42, and the lens 42 forms a line of three points with the bottom of the centrifugal tube and the parallel backlight source 31 during imaging;
the oil sludge content detector 5 is connected with an image acquisition system through a cable, and is used for analyzing the acquired oil sludge image in real time and displaying the result in the oil sludge content detector 5.
The centrifugal motor 11 is a servo motor, and the rotating speed is adjustable from 0rpm to 3000rpm, so that the required centrifugal force is achieved.
The image sensor 41 is connected with the lens 42 by screw threads.
The method for detecting the content of the oil sludge of the electric oil by using the measuring system comprises the following steps:
s1, constructing an oil sludge content sample database: analyzing the oil sludge content of different oil samples by using a DL/T429.7 test method, and taking the obtained oil sludge content samples as a sample database;
s2, mixing the corresponding oil sample in the database according to the ratio of the sample to the reagent by a DL/T429.7 method, and adding the mixture into an oil sludge detection centrifuge tube;
s3, after the electric oil sludge rapid quantitative measurement system is added into the centrifugal cup 15 containing the mixed sample, the electric oil sludge rapid quantitative measurement system is started, the system performs centrifugation according to the rotation speed and time set in the motor driver 12, the time is set to 20 minutes, the rotation speed setting is calculated according to the centrifugal radius and the relative centrifugal force, and the calculation formula is:
wherein: rcf is relative centrifugal force, 600-700;
d is the rotating diameter, is the distance between the tail ends of two opposite centrifuge tubes, and has the unit of millimeter of 300-400;
s4, after the centrifugation process is finished, according to the position signal of the positioning iron nail 22 detected by the electromagnetic proximity sensor 21, adjusting the centrifugal motor 11 to enable the lens 42, the bottom of the centrifugal tube and the parallel backlight source 31 to be adjusted to form a three-point line;
s5, acquiring an image of the sludge to be detected by the image sensor 41, and after the image is corrected and detected, accurately measuring the projection area of the image, including the following steps:
s51, performing correction detection on the acquired sludge image by the image sensor 41 before measurement, and calculating a correction coefficient;
s52, taking the obtained oil sludge image as an object, and carrying out image geometric correction according to a correction coefficient to obtain a corrected image;
s53, calculating the projection area of the oil sludge according to the corrected image;
and S54, establishing an expression of the projection area and the sludge content of the corresponding oil sample in S1.
m＝a*s+b
Wherein: m is the sludge content, s is the projected area, a is a constant, and b is a constant.
In the step S53, a is in a value range of 0.001-0.1, and b is in a value range of-0.2.
Compared with the prior art, the utility model discloses possess following advantage:
the utility model provides a quick quantitative measurement system of oil fatlute for electric power and measuring method, system simple structure, the centrifugation has, the location, fatlute optical imaging, fatlute content measurement function, prepare the oily organic solution that DL/T429.7 required before the experiment, centrifugal system is through the fatlute separation in centrifugal mode is with oil, the sedimentary fatlute rotates to image acquisition district behind the centrifugation of positioning system accuracy, obtain fatlute content image through image acquisition, and calculate the fatlute content who reachs the sample through the analysis, and is quick, in real time, accurate, the advantage is obvious.
Drawings
Fig. 1 is a structural schematic diagram of a rapid detector for oil sludge in electric power.
Fig. 2 is a flowchart of an image detection method for oil sludge for electric power.
Detailed Description
In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the utility model relates to a quick quantitative measurement system for oil sludge in electric power oil, which comprises a housing 6, a centrifugal system, a positioning system, a light source system, an image acquisition system and an oil sludge content detector 5 which are arranged in the housing 6, and has the functions of centrifugation, positioning, oil sludge optical imaging and oil sludge content measurement; the centrifugal system comprises a centrifugal motor 11, a motor driver 12, a centrifugal bracket 13, a centrifugal hanger 14, a centrifugal hanger cup 15 and a shock absorber 16; the centrifugal motor 11 is fixed at the bottom of the centrifugal support 13, the motor driver 12 is a motor driver matched with the centrifugal motor 11, is connected with the centrifugal motor 11 through a cable, is fixedly arranged in the shell 6, controls the rotating speed of the centrifugal motor 11 through the motor driver 12, and the centrifugal support 13 is used for fixing the centrifugal motor 11, the positioning system and the parallel backlight source 31; the centrifugal hanging frame 14 is arranged on the centrifugal motor 11, the two ends of the centrifugal hanging frame 14 are provided with symmetrical centrifugal hanging cups 15, the upper parts of the centrifugal hanging cups 15 are provided with hanging points which can be hung on the centrifugal hanging frame 14, the appearance of the centrifugal hanging cups is the same as that of a centrifugal tube, the bottom of the centrifugal tube is an opening and is exposed outside, and the shock absorber 16 is connected with the centrifugal support 13 and the shell 6; the positioning system comprises an electromagnetic proximity sensor 21 and a positioning iron nail 22, the electromagnetic proximity sensor 21 is fixed at the top end of the centrifugal support 13, the electromagnetic proximity sensor 21 is positioned between the centrifugal hanger 14 and the centrifugal motor 11, and the electromagnetic proximity sensor 21 is connected with the motor driver 12 through a cable; the positioning iron nail 22 is fixed on the lower bottom surface of the centrifugal hanging rack 14 and is used for positioning the electromagnetic induction centrifugal hanging rack 14 in the centrifugal process; the light source system comprises a light source controller 32 and a parallel backlight source 31, wherein the parallel backlight source 31 is positioned on the side surface of the centrifugal bracket 13, is tightly attached to one side of the centrifugal motor 11, is opposite to the image acquisition system, is connected with the light source controller 32 through a cable, and provides a background light source for image acquisition; the light source controller 32 is fixedly arranged in the shell 6; the image acquisition system comprises an image sensor 41 and a lens 42, and the image acquisition system 4 is positioned in the shell 6 and outside the centrifugal system 1; the image sensor 41 is connected with the lens 42, and the lens 42 forms a line of three points with the bottom of the centrifugal tube and the parallel backlight source 31 during imaging; the oil sludge content detector 5 is connected with an image acquisition system through a cable, and is used for analyzing the acquired oil sludge image in real time and displaying the result in the oil sludge content detector 5.
As the preferred embodiment of the utility model, centrifugal motor 11 is servo motor, and the rotational speed is adjustable from 0 ~ 3000rpm to reach required centrifugal force.
As a preferred embodiment of the present invention, the image sensor 41 is connected to the lens 42 by a screw.
The utility model also provides an utilize above-mentioned measurement system to carry out the image detection method of power oil fatlute content, including following step:
s1, constructing an oil sludge content sample database: analyzing the oil sludge content of different oil samples by using a DL/T429.7 test method, and taking the obtained oil sludge content samples as a sample database;
s2, mixing the corresponding oil sample in the database according to the ratio of the sample to the reagent by a DL/T429.7 method, and adding the mixture into an oil sludge detection centrifuge tube;
s3, after the electric oil sludge rapid quantitative measurement system is added into the centrifugal cup 15 containing the mixed sample, the electric oil sludge rapid quantitative measurement system is started, the system performs centrifugation according to the rotation speed and time set in the motor driver 12, the time is set to 20 minutes, the rotation speed setting is calculated according to the centrifugal radius and the relative centrifugal force, and the calculation formula is:
wherein: rcf is relative centrifugal force, 600-700;
d is the rotating diameter, is the distance between the tail ends of two opposite centrifuge tubes, and has the unit of millimeter of 300-400;
s4, after the centrifugation process is finished, according to the position signal of the positioning iron nail 22 detected by the electromagnetic proximity sensor 21, adjusting the centrifugal motor 11 to enable the lens 42, the bottom of the centrifugal tube and the parallel backlight source 31 to be adjusted to form a three-point line;
s5, acquiring an image of the sludge to be detected by the image sensor 41, and after the image is corrected and detected, accurately measuring a projection area of the image, as shown in fig. 2, including the following steps:
s51, performing correction detection on the acquired sludge image by the image sensor 41 before measurement, and calculating a correction coefficient;
s52, taking the obtained oil sludge image as an object, and carrying out image geometric correction according to a correction coefficient to obtain a corrected image;
s53, calculating the projection area of the oil sludge according to the corrected image;
and S54, establishing an expression of the projection area and the sludge content of the corresponding oil sample in S1.
m＝a*s+b
Wherein: m is the oil sludge content, s is the projection area, a is a constant, the value is 0.04, and b is a constant, the value is-0.08.
Claims (3)
1. The utility model provides a quick quantitative measurement system of oil sludge for electric power which characterized in that: comprises a shell (6), a centrifugal system, a positioning system, a light source system, an image acquisition system and an oil sludge content detector (5) which are arranged in the shell (6);
the centrifugal system comprises a centrifugal motor (11), a motor driver (12), a centrifugal bracket (13), a centrifugal hanging rack (14), a centrifugal hanging cup (15) and a shock absorber (16); the centrifugal motor (11) is fixed at the bottom of the centrifugal support (13), the motor driver (12) is a motor driver matched with the centrifugal motor (11), is connected with the centrifugal motor (11) through a cable and is fixedly installed in the shell (6), the rotating speed of the centrifugal motor (11) is controlled through the motor driver (12), and the centrifugal support (13) is used for fixing the centrifugal motor (11), the positioning system and the parallel backlight source (31); the centrifugal hanging rack (14) is installed on the centrifugal motor (11), two ends of the centrifugal hanging rack (14) are provided with symmetrical centrifugal hanging cups (15), hanging points are arranged on the upper portions of the centrifugal hanging cups (15) and can be hung on the centrifugal hanging rack (14), the centrifugal hanging cups are identical to centrifugal tubes in appearance, openings are formed in the bottoms of the centrifugal tubes, the bottoms of the centrifugal tubes are exposed outside, and the shock absorbers (16) are connected with the centrifugal rack (13) and the shell (6);
the positioning system comprises an electromagnetic proximity sensor (21) and a positioning iron nail (22), the electromagnetic proximity sensor (21) is fixed at the top end of the centrifugal support (13), the electromagnetic proximity sensor (21) is positioned between the centrifugal hanger (14) and the centrifugal motor (11), and the electromagnetic proximity sensor (21) is connected with the motor driver (12) through a cable; the positioning iron nail (22) is fixed on the lower bottom surface of the centrifugal hanging rack (14) and is used for positioning the electromagnetic induction centrifugal hanging rack (14) in the centrifugal process;
the light source system comprises a light source controller (32) and a parallel backlight source (31), wherein the parallel backlight source (31) is positioned on the side surface of the centrifugal bracket (13), is tightly attached to one side of the centrifugal motor (11), is opposite to the image acquisition system, is connected with the light source controller (32) through a cable, and provides a background light source for image acquisition; the light source controller (32) is fixedly arranged in the shell (6);
the image acquisition system comprises an image sensor (41) and a lens (42), and the image acquisition system (4) is positioned in the shell (6) and outside the centrifugal system (1); the image sensor (41) is connected with the lens (42), and the lens (42) forms a line of three points with the bottom of the centrifugal tube and the parallel backlight source (31) during imaging;
the oil sludge content detector (5) is connected with an image acquisition system through a cable, and is used for analyzing the acquired oil sludge image in real time and displaying the result in the oil sludge content detector (5).
2. The system of claim 1, wherein the system comprises: the centrifugal motor (11) is a servo motor, and the rotating speed is adjustable from 0rpm to 3000 rpm.
3. The system of claim 1, wherein the system comprises: the image sensor (41) is connected with the lens (42) through threads.
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| CN201920755387.XU CN210221834U (en) | 2019-05-24 | 2019-05-24 | Rapid quantitative measurement system for oil sludge of electric power oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108707A (en) * | 2019-05-24 | 2019-08-09 | 西安热工研究院有限公司 | A kind of oil for electric power greasy filth fast quantification measuring system and measurement method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108707A (en) * | 2019-05-24 | 2019-08-09 | 西安热工研究院有限公司 | A kind of oil for electric power greasy filth fast quantification measuring system and measurement method |
| CN110108707B (en) * | 2019-05-24 | 2024-02-20 | 西安热工研究院有限公司 | Rapid quantitative measurement system and measurement method for oil sludge for electric power |
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