Insulating oil quick differentiation device

Abstract

The present invention proposes a device for quickly distinguishing insulating oil, comprising: a housing provided with a sample chamber; a liquid pool provided within the sample chamber for placing the insulating oil to be tested; an infrared spectrum acquisition unit for collecting an infrared transmittance map of the insulating oil to be tested; and a processing unit electrically connected to the infrared spectrum acquisition unit, for receiving the infrared transmittance map and comparing the infrared transmittance map with typical spectra of insulating oils from different manufacturers and models to determine the model and manufacturer information of the insulating oil to be tested. By sampling and scanning the insulating oil and comparing the scan results with typical spectra of transformer oils from different manufacturers and models, the model and manufacturer information of the insulating oil to be tested can be determined. The manufacturer and model of the transformer oil can be quickly distinguished, thereby ensuring the supply of high-quality oil sources for high-voltage transformers and the safe and reliable use of transformer oil, preventing inferior oil sources from affecting the safe operation of power grid equipment, and improving the safety performance of power grid equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of insulating oil detection, and in particular to a device for quickly distinguishing insulating oil. Background Art

[0002] In recent years, due to the rapid growth in domestic demand for transformer oil, the demand for cycloalkyl crude oil transformer oil has far exceeded the production capacity of PetroChina's Kunlun Karamay Oilfield. Consequently, non-cycloalkyl transformer oils or transformer oils mixed with cycloalkyl transformer oils have flooded the market under the guise of Karamay cycloalkyl transformer oil. To ensure the supply of high-quality oil for high-voltage transformers and the safe and reliable use of transformer oil, and to prevent its adverse effects on the safe operation of power grid equipment, a device that can quickly distinguish the manufacturer and model of insulating oil is urgently needed to ensure the safe operation of power grid equipment. Summary of the Invention

[0003] In view of this, the present invention proposes a device for quickly distinguishing insulating oils, aiming to solve the problem of quickly distinguishing the manufacturers and models of insulating oils.

[0004] In one aspect, the present invention provides a device for rapid differentiation of insulating oils, comprising: a shell having a sample chamber provided on the shell; a liquid pool disposed in the sample chamber and used for placing the insulating oil to be tested; an infrared spectrum acquisition unit for acquiring an infrared transmittance map of the insulating oil to be tested; and a processing unit electrically connected to the infrared spectrum acquisition unit for receiving the infrared transmittance map and comparing the infrared transmittance map with typical spectra of insulating oils from different manufacturers and models to determine the model and manufacturer information of the insulating oil to be tested.

[0005] Furthermore, a gear metering pump is provided in the sample chamber, and a sample inlet, a waste liquid port and a cleaning agent port are provided on the shell. The liquid inlet end of the gear metering pump is connected to the sample inlet and the cleaning agent port respectively; the liquid outlet end of the gear metering pump is connected to the liquid inlet end of the liquid pool, and the liquid outlet end of the liquid pool is connected to the waste liquid port.

[0006] Furthermore, a first zero-dead-volume solenoid valve is provided between the liquid inlet end of the gear metering pump and the sample inlet, one end of the first zero-dead-volume solenoid valve is connected to the sample inlet, and the other end of the first zero-dead-volume solenoid valve is connected to the liquid inlet end of the gear metering pump.

[0007] Furthermore, a second dead volume-free solenoid valve is provided between the liquid inlet end of the gear metering pump and the cleaning agent port, one end of the second dead volume-free solenoid valve is connected to the cleaning agent port, and the other end of the second dead volume-free solenoid valve is connected to the liquid inlet end of the gear metering pump.

[0008] Furthermore, the liquid pool includes a top plate and a bottom plate, and a through hole is opened in the middle of the top plate and the bottom plate, wherein the upper side of the top plate is provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid outlet end of the gear metering pump, and the liquid outlet is connected to the waste liquid port.

[0009] Furthermore, a top elastic sealing gasket is provided on the lower side of the top plate, and a bottom elastic sealing gasket is provided on the upper side of the bottom plate, and the bottom elastic sealing gasket and the top elastic sealing gasket are arranged between the top plate and the bottom plate, wherein an optical path gasket is provided between the bottom elastic sealing gasket and the top elastic sealing gasket, a first sodium chloride window is provided between the optical path gasket and the top elastic sealing gasket, and a second sodium chloride window is provided between the optical path gasket and the bottom elastic sealing gasket.

[0010] Furthermore, a liquid pool mounting bracket is provided in the sample chamber, and the liquid pool is provided on the liquid pool mounting bracket.

[0011] Furthermore, a stainless steel drying dish chamber is also provided in the sample chamber.

[0012] Furthermore, the processing unit includes a comparison module, which is used to compare the infrared transmittance graph with the typical spectrum, output a similarity score after similarity judgment, and determine the model and manufacturer information of the insulating oil to be tested based on the similarity score.

[0013] Furthermore, the comparison module determines the similarity score Score of the similarity judgment according to the following formula: XY :

[0014]

[0015] Among them, m is the number of given data curve categories, N is the number of coordinate points of each data, and x is the vertical coordinate value of the variable X. is the mean value of the vertical coordinate of variable X, and y is the vertical coordinate value of variable Y. is the mean value of the ordinate of variable Y, y——the ordinate value of variable Y; Indicates the vertical coordinate mean of variable Y, x i Indicates the i-th ordinate value of variable X, y i Represents the i-th vertical coordinate value of variable Y.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that the device of the present invention samples and scans the insulating oil, compares the scanning results with the typical spectra of transformer oils of various manufacturers and models, and thus determines the model and manufacturer information of the insulating oil to be tested based on the scanning results. The manufacturer and model of the transformer oil can be quickly distinguished, thereby ensuring the supply of high-quality oil sources for high-voltage transformers and the safe and reliable use of transformer oil, preventing inferior oil sources from affecting the safe operation of power grid equipment, and improving the safety performance of power grid equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0018] Figure 1 A top view of a device for quickly distinguishing insulating oil provided in an embodiment of the present invention;

[0019] Figure 2 A structural diagram of a device for quickly distinguishing insulating oil provided in an embodiment of the present invention;

[0020] Figure 3 A structural diagram of a liquid pool provided in an embodiment of the present invention;

[0021] Figure 4 An exploded view of a liquid pool provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] See Figure 1-4As shown, this embodiment provides a device for rapid differentiation of insulating oils, comprising: a housing 1, a liquid pool 4, an infrared spectrum acquisition unit, and a processing unit, wherein the housing 1 is provided with a sample chamber 2; the liquid pool 4 is disposed in the sample chamber 2, and the liquid pool 4 is used to place the insulating oil to be tested; the infrared spectrum acquisition unit is disposed in the housing 1, and the infrared spectrum acquisition unit is used to acquire an infrared transmittance map of the insulating oil to be tested; the processing unit is electrically connected to the infrared spectrum acquisition unit, and is used to receive the infrared transmittance map and compare the infrared transmittance map with typical spectra of insulating oils of different manufacturers and models to determine the model and manufacturer information of the insulating oil to be tested.

[0024] Specifically, the housing 1 is preferably a square box structure, and the sample chamber 2 is preferably a recessed structure located in the middle of one side of the housing 1. A certain amount of accommodation space is provided in the sample chamber for placing parts. Preferably, the sample chamber 2 is preferably a square groove structure.

[0025] Specifically, the liquid pool 4 is arranged in the middle of the sample chamber 2 and is used for placing the insulating oil to be tested.

[0026] Specifically, a bracket 11 is provided within the sample chamber 2, and the liquid pool 4 is mounted on the bracket 11. The bracket 11 is positioned in the middle of the sample chamber 2 and is removably connected to the liquid pool 4 to facilitate maintenance of the liquid pool 4. The bracket 11 is preferably a structure that only needs to support and secure the liquid pool 4; its specific structure is not limited herein. The bracket 11 is connected to the liquid pool 4 by a snap or bolt connection, and the specific connection method can be configured according to actual conditions.

[0027] Specifically, the infrared spectrum acquisition unit is disposed within the housing 1 or within the sample chamber 2, and is used to scan the insulating oil to be tested within the liquid pool 4 to obtain an infrared transmittance map of the insulating oil to be tested. Preferably, the infrared spectrum acquisition unit is disposed above or below the liquid pool 4 to perform an infrared scan of the insulating oil to be tested within the liquid pool 4.

[0028] Specifically, the infrared spectrum acquisition unit includes a light source, a monochromator, a detector and a data processing system. The working principle of the infrared spectrum acquisition unit is the same as that of the infrared spectrometer. In this embodiment, the infrared spectrum acquisition unit only needs to be able to collect the infrared transmittance diagram of the insulating oil to be tested.

[0029] Specifically, the processing unit is in communication with the infrared spectrum acquisition unit to receive the infrared transmittance map of the insulating oil under test. After receiving the infrared transmittance map, the processing unit compares it with typical spectra of insulating oils from different manufacturers and types to determine the model and manufacturer of the insulating oil under test. These typical spectra of insulating oils from different manufacturers and types are stored within the processing unit.

[0030] Specifically, the processing unit may be a single chip microcomputer, which is built into the housing 1. Alternatively, the processing unit may be a computer, which receives the data output by the infrared spectrum acquisition unit and processes and displays the data.

[0031] It can be seen that the device of this embodiment samples and scans the insulating oil, compares the scan results with typical spectra of transformer oils of various manufacturers and models, and thus determines the model and manufacturer information of the insulating oil to be tested based on the scan results. The manufacturer and model of the transformer oil can be quickly distinguished, thereby ensuring the supply of high-quality oil sources for high-voltage transformers and the safe and reliable use of transformer oil, preventing inferior oil sources from affecting the safe operation of power grid equipment, and improving the safety performance of power grid equipment.

[0032] Specifically, when the processing unit is a single-chip microcomputer, the insulating oil rapid differentiation device also includes a display panel and a control panel, which are respectively connected to the single-chip microcomputer. The display panel is used to intuitively display the comparison results of the processing unit, and the control panel is used to control the working process of the single-chip microcomputer.

[0033] Specifically, a gear metering pump 3 is provided in the sample chamber 2, and a sample inlet 5, a waste liquid port 7 and a cleaning agent port 6 are provided on the shell 1. The liquid inlet end of the gear metering pump 3 is connected to the sample inlet 5 and the cleaning agent port 6 respectively; the liquid outlet end of the gear metering pump 3 is connected to the liquid inlet end of the liquid pool 4, and the liquid outlet end of the liquid pool 4 is connected to the waste liquid port 7.

[0034] Specifically, the housing 1 is provided with a sample chamber 2, and a sample chamber cover is installed above the sample chamber 2, forming a sealed cavity. A gear metering pump 3 is mounted within the sample chamber 2 via a retaining nut. The gear metering pump 3 is located in a corner of the sample chamber 2. The gear metering pump 3 precisely controls the flow rate of the insulating oil sample to be tested. A bracket 11 is also mounted within the sample chamber 2 via a retaining nut. A liquid reservoir 4 is mounted on the liquid reservoir retaining bracket 11. The insulating oil sample to be tested is scanned within the liquid reservoir 4.

[0035] Specifically, a first zero-dead-volume solenoid valve 8 is provided between the liquid inlet end of the gear metering pump 3 and the sampling port 5 , one end of the first zero-dead-volume solenoid valve 8 is connected to the sampling port 5 , and the other end of the first zero-dead-volume solenoid valve 8 is connected to the liquid inlet end of the gear metering pump 3 .

[0036] Specifically, one end of the first zero-dead-volume solenoid valve 8 is connected to the sampling port 5 through the first sampling tube, and the other end of the first zero-dead-volume solenoid valve 8 is connected to the liquid inlet end of the gear metering pump 3 through the three-way pipe 10 .

[0037] Specifically, a second zero-dead-volume solenoid valve 9 is arranged between the liquid inlet end of the gear metering pump 3 and the cleaning agent port 6 , one end of the second zero-dead-volume solenoid valve 9 is connected to the cleaning agent port 6 , and the other end of the second zero-dead-volume solenoid valve 9 is connected to the liquid inlet end of the gear metering pump 3 .

[0038] Specifically, the liquid inlet 16 is connected to the liquid outlet of the gear metering pump 3 through the second sample inlet tube, and the liquid outlet 17 is connected to the waste liquid port 7 through the oil drain pipe.

[0039] Specifically, a stainless steel drying chamber 12 is further provided in the sample chamber 2 .

[0040] Furthermore, to facilitate sample injection, cleaning of the liquid reservoir 4, and discharge of waste liquid, the device housing 1 is provided with an injection port 5, a cleaning agent port 6, and a waste liquid port 7. One end of the injection port 5 is connected to a sample syringe, and the other end is connected to one end of an injection tube. The other end of the injection tube is connected to the inlet of a first zero-dead-volume solenoid valve 8, and the outlet of the first zero-dead-volume solenoid valve 8 is connected to one end of a three-way pipe 10. Similarly, one end of the cleaning agent port 6 is connected to a cleaning agent syringe, and the other end is connected to one end of a cleaning agent tube. The other end of the cleaning agent tube is connected to the inlet of a second zero-dead-volume solenoid valve 9. The outlet of the second zero-dead-volume solenoid valve 9 and the outlet of the first zero-dead-volume solenoid valve 8 are connected to the same end of a three-way pipe 10. The other end of the three-way pipe 10 is connected to the inlet of a gear metering pump 3, and the outlet of the gear metering pump 3 is connected to the inlet of the liquid reservoir 44.

[0041] Furthermore, in order to ensure that the sample chamber 2 is dry and the moisture in the air in the sample chamber 2 does not interfere with the results, a stainless steel drying chamber 12 is provided in the sample chamber 2 and fixed in the sample chamber 2 by fixing bolts.

[0042] Continue reading Figure 3 and 4 As shown, the liquid pool 4 includes a top plate 13 and a bottom plate 14, and through holes are opened in the middle of the top plate 13 and the bottom plate 14, wherein a liquid inlet 16 and a liquid outlet 17 are provided on the upper side of the top plate 13, the liquid inlet 16 is connected to the liquid outlet end of the gear metering pump 3, and the liquid outlet 17 is connected to the waste liquid port 7.

[0043] Specifically, the size of the top plate 13 is smaller than that of the bottom plate 14 , and circular holes with the same radius are opened in the middle of the top plate 13 and the bottom plate 14 . The upper side of the top plate 13 of the liquid pool 4 is fixedly connected with a liquid inlet 16 and a liquid outlet 17 .

[0044] Specifically, a top elastic sealing gasket 18 is provided on the lower side of the top plate 13, and a bottom elastic sealing gasket 19 is provided on the upper side of the bottom plate 14. The bottom elastic sealing gasket 19 and the top elastic sealing gasket 18 are arranged between the top plate 13 and the bottom plate 14, wherein an optical path gasket 22 is provided between the bottom elastic sealing gasket 19 and the top elastic sealing gasket 18, a first sodium chloride window 20 is provided between the optical path gasket 22 and the top elastic sealing gasket 18, and a second sodium chloride window 21 is provided between the optical path gasket 22 and the bottom elastic sealing gasket 19.

[0045] Specifically, a top elastic sealing gasket 18 is glued to the inner surface of the top plate 13, a bottom elastic sealing gasket 19 is glued to the inner surface of the bottom plate 14, an optical path gasket 22 is arranged between the top elastic sealing gasket 18 and the bottom elastic sealing gasket 19, a first sodium chloride window 20 is arranged between the optical path gasket 22 and the top elastic sealing gasket 18, and a second sodium chloride window 21 is arranged between the optical path gasket 22 and the bottom elastic sealing gasket 19. Bolt holes are opened near the four corners of the top plate 13, and a corresponding threaded hole is opened on the bottom plate 14. The hand nut 15 passes through the threaded holes of the top plate 13 and the bottom plate 14 to connect and fix the top plate 13 and the bottom plate 14. Specifically, the hand nut 15 is connected to a stud 23. The stud 23 is passed through the threaded holes of the top plate 13 and the bottom plate 14 from the bottom plate 14 to the top plate 13, and is threadedly connected with the hand nut 15 to connect and fix the top plate 13 and the bottom plate 14. The optical path gasket 22, the first sodium chloride window 20, and the second sodium chloride window 21 are squeezed and fastened between the top plate 13 and the bottom plate 14 by the hand nut 15.

[0046] Furthermore, a liquid inlet 16 and a liquid outlet 17 are installed on the liquid top plate 13 . The liquid inlet 16 is connected to the liquid outlet of the gear metering pump 3 , and the liquid outlet 17 is connected to the waste liquid port 7 .

[0047] Furthermore, in order to fix the liquid pool 4 on the bracket 11, the area of ​​the bottom plate 14 of the liquid pool 4 is larger than the area of ​​the top plate 13. A groove is provided in the bracket 11, and the bottom plate 14 is inserted into the groove of the bracket 11 to fix the liquid pool 4.

[0048] In another preferred embodiment based on the above embodiment, to control the scanning of the rapid differentiation device and display the scanning results for comparison with a representative spectrum, the rapid differentiation device of this embodiment is provided with a transmitting module and a receiving module, each electrically connected to a processing unit. The processing unit is preferably an industrial computer. The industrial computer transmits instructions to the receiving module to control the rapid differentiation device to scan. The scanning results are transmitted to the industrial computer via the transmitting module, and the industrial computer displays the scanning results. The power supply terminals of the industrial computer and the differentiation device are both electrically connected to an uninterruptible power supply to ensure normal power supply of the equipment.

[0049] Specifically, the scanning range of this embodiment is 4000cm -1 -500cm -1 , the selected infrared transmittance is 700cm -1 -500cm -1 Obtain the infrared transmittance graph.

[0050] During the specific implementation of the above-mentioned embodiments, the cleaning agent is first injected through the cleaning agent port 6, and the second dead volume-free solenoid valve 9 and the gear metering pump 3 control the cleaning agent to clean the inside of the device. After the cleaning is completed, the waste liquid is discharged from the waste liquid port 7; the insulating oil sample to be tested is injected through the sampling port 5, and the first dead volume-free solenoid valve 8 and the gear metering pump 3 control the amount of the sample. The sample enters the liquid pool 4 from the liquid inlet 16 on the top plate 13 through the first dead volume-free solenoid valve 8, the three-way pipe 10 and the gear metering pump 3. The device scans the sample in the liquid pool 4 and displays the obtained infrared transmittance graph on the industrial computer. After the scan is completed, the sample is discharged from the liquid outlet 17 on the top plate 13 of the liquid pool 4 through the waste liquid port 7; the obtained infrared transmittance graph of the sample is qualitatively or quantitatively compared with the typical spectra of insulating oils of different manufacturers and models, so as to quickly distinguish the model and manufacturer of the sample.

[0051] In another preferred embodiment based on the above embodiment, in this embodiment, the processing unit includes a comparison module, which is used to compare the infrared transmittance graph with the typical spectrum, and output a similarity score after similarity judgment, and determine the model and manufacturer information of the insulating oil to be tested based on the similarity score.

[0052] It can be seen that the device samples and scans the insulating oil, displays the scan results on the computer, and compares the results with the typical spectra of transformer oils of various manufacturers and models, so as to quickly distinguish the manufacturer and model of the transformer oil.

[0053] Specifically, the comparison module determines the similarity score Score according to the following formula: XY :

[0054]

[0055] Among them, m is the number of given data curve categories, N is the number of coordinate points of each data, and x is the vertical coordinate value of the variable X. is the mean value of the vertical coordinate of variable X, and y is the vertical coordinate value of variable Y. is the mean value of the ordinate of variable Y, y——the ordinate value of variable Y; Indicates the vertical coordinate mean of variable Y, x i Indicates the i-th ordinate value of variable X, y i Represents the i-th vertical coordinate value of variable Y.

[0056] It can be seen that by performing similarity judgment on the insulating oil spectrum to be tested and the typical spectrum, the data categories can be effectively distinguished, and the results can be expressed more intuitively, thereby quickly and effectively confirming the manufacturer and model information of the insulating oil, thereby improving work efficiency.

[0057] In a specific implementation, using the spectra of Sinopec's I-40, PetroChina's KI45X, Shell's S4, PetroChina's KI50X, and CNOOC Taizhou's HI50X as examples, the following method can be used: when searching for the closest spectrum, first obtain the infrared spectrum of the insulating oil to be confirmed, intercept the preset spectrum, and obtain the curve of the preset spectrum. Simultaneously, obtain the curves of the spectra of Sinopec's I-40, PetroChina's KI45X, Shell's S4, PetroChina's KI50X, and CNOOC Taizhou's HI50X. These curves are, in order, the spectrum curves of currently mainstream transformer oils: Sinopec's I-40, PetroChina's KI45X, Shell's S4, PetroChina's KI50X, and CNOOC Taizhou's HI50X.

[0058] Preferably, when obtaining the spectrum curves of Sinopec's I-40, PetroChina's KI45X, Shell's S4, PetroChina's KI50X and CNOOC Taizhou's HI50X, it is preferred to intercept the infrared transmittance graph with relatively obvious difference characteristics of each spectrum, that is, the 700cm -1 -500cm -1 The infrared transmittance images within the range are compared, thereby improving the efficiency of obtaining the comparison results, that is, effectively improving the work efficiency.

[0059] Specifically, a curve of the insulating oil spectrum to be tested is obtained, and the similarity between the curve and five typical spectrum curves is calculated.

[0060] Specifically, traditional similarity calculation methods tested the three correlation coefficients poorly for distinguishing K145X and K150X. The Manhattan distance algorithm was effective in distinguishing data categories, but the distance values ​​were not intuitive enough. Therefore, a similarity determination method was proposed that uses the Manhattan distance to improve the correlation coefficient, enabling it to effectively distinguish data categories while also providing a more intuitive representation of the results.

[0061] Specifically, the similarity score Score X，Y Equal to the Pearson correlation coefficient ρ X，Y Multiply by a correction factor λ X，Y , where λ is a coefficient with a value range in the range of (0,1) obtained based on the Manhattan distance, which is used to correct the correlation between data with large similarity but belonging to different categories.

[0062] Specifically, the correction coefficient uses an exponential function because: the value range of the exponential function on the negative semi-axis is between (0, 1), which is consistent with the probability range; the exponential function increases monotonically on the negative semi-axis, the larger the Manhattan distance, the smaller the value after taking a negative number, the smaller the exponential value, and the smaller the similarity score finally calculated, which meets the correction coefficient requirements.

[0063] Specifically, through the above improvements, the final similarity discrimination algorithm calculation formula is as follows:

[0064]

[0065] Among them, Score XY is the similarity score between variables X and Y, with a value between (0,1), indicating the degree of similarity between the two; X，Y is the correction coefficient of the correlation coefficient, which is calculated by Manhattan distance and has a value between (0,1); ρ X，Y is the Pearson correlation coefficient, which ranges from (0,1); d XY is the Manhattan distance between variables X and Y; m is the number of given data curve categories. Here, 5 curves are given, so m = 5; N is the number of coordinate points of each data. Here, the infrared data of 700 cm-1-500 cm-1 is intercepted, so N = 200; x is the vertical coordinate value of variable X; is the mean value of the vertical coordinate of variable X; y is the vertical coordinate value of variable Y; is the vertical mean of the variable Y.

[0066] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A device for quickly distinguishing insulating oil, characterized in that: include: a housing, wherein a sample chamber is provided on the housing; a liquid pool, which is arranged in the sample chamber and is used to place the insulating oil to be tested; An infrared spectrum acquisition unit, used for acquiring an infrared transmittance graph of the insulating oil to be tested; a processing unit electrically connected to the infrared spectrum acquisition unit, configured to receive the infrared transmittance graph and compare the infrared transmittance graph with typical spectra of insulating oils of different manufacturers and types to determine the model and manufacturer information of the insulating oil to be tested; wherein the processing unit stores the typical spectra of insulating oils of different manufacturers and types; The processing unit includes a comparison module, which is used to compare the infrared transmittance graph with the typical spectrum, output a similarity score after similarity judgment, and determine the model and manufacturer information of the insulating oil to be tested based on the similarity score; The comparison module is used to obtain a typical infrared spectrum of the insulating oil to be confirmed, intercept an infrared transmittance graph with relatively obvious difference characteristics of the typical spectrum, and then obtain a curve of the typical spectrum, and obtain a curve of the spectrum of the insulating oil to be tested based on the infrared transmittance graph of the insulating oil to be tested, and calculate the similarity between the curve of the spectrum of the insulating oil to be tested and the curve of the typical spectrum; The comparison module determines the similarity score Score of the similarity judgment according to the following formula XY : Among them, m is the number of given data curve categories, N is the number of coordinate points of each data, and x is the vertical coordinate value of the variable X. is the mean value of the vertical coordinate of variable X, and y is the vertical coordinate value of variable Y. is the mean value of the ordinate of variable Y, y——the ordinate value of variable Y; Indicates the vertical coordinate mean of variable Y, x i Indicates the i-th ordinate value of variable X, y i Indicates the i-th ordinate value of variable Y; The liquid pool includes a top plate and a bottom plate, the middle portions of the top plate and the bottom plate are each provided with a through hole, and the upper side of the top plate is provided with a liquid inlet and a liquid outlet; A top elastic sealing pad is provided on the lower side of the top plate, a bottom elastic sealing pad is provided on the upper side of the bottom plate, and the bottom elastic sealing pad and the top elastic sealing pad are arranged between the top plate and the bottom plate; An optical path gasket is provided between the bottom elastic sealing gasket and the top elastic sealing gasket, a first sodium chloride window is provided between the optical path gasket and the top elastic sealing gasket, and a second sodium chloride window is provided between the optical path gasket and the bottom elastic sealing gasket; A gear metering pump is provided in the sample chamber, and the housing is provided with a sample inlet, a waste liquid outlet, and a cleaning agent outlet. The liquid inlet end of the gear metering pump is respectively connected to the sample inlet and the cleaning agent outlet; the gear metering pump is used to control the flow rate of the insulating oil sample to be tested; The liquid outlet of the gear metering pump is connected to the liquid inlet of the liquid pool, and the liquid outlet of the liquid pool is connected to the waste liquid port; A stainless steel drying chamber is also provided in the sample chamber to ensure dryness in the sample chamber.

2. The insulating oil rapid differentiation device according to claim 1, characterized in that: A first zero-dead-volume solenoid valve is provided between the liquid inlet end of the gear metering pump and the sample inlet, one end of the first zero-dead-volume solenoid valve is connected to the sample inlet, and the other end of the first zero-dead-volume solenoid valve is connected to the liquid inlet end of the gear metering pump.

3. The insulating oil rapid differentiation device according to claim 1, characterized in that: A second zero-dead-volume solenoid valve is provided between the liquid inlet end of the gear metering pump and the cleaning agent port, one end of the second zero-dead-volume solenoid valve is connected to the cleaning agent port, and the other end of the second zero-dead-volume solenoid valve is connected to the liquid inlet end of the gear metering pump.

4. The insulating oil rapid differentiation device according to claim 1, characterized in that: The liquid inlet is communicated with the liquid outlet of the gear metering pump, and the liquid outlet is communicated with the waste liquid outlet.

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