CN112525609A - Transformer oil detects gets oily device - Google Patents
Transformer oil detects gets oily device Download PDFInfo
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- CN112525609A CN112525609A CN202011362248.4A CN202011362248A CN112525609A CN 112525609 A CN112525609 A CN 112525609A CN 202011362248 A CN202011362248 A CN 202011362248A CN 112525609 A CN112525609 A CN 112525609A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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Abstract
The invention discloses an oil taking device for transformer oil detection, which belongs to the technical field of oil sampling for electric power, and comprises a shell, wherein the inner wall of the shell is fixedly connected with the outer wall of an oil guide barrel through a supporting plate, the left end of the oil guide barrel is provided with a connector, the left end of the connector is communicated with the right end of a guide pipe, the left end of the guide pipe is communicated with the output end of an oil drain valve, one side of the oil drain valve is provided with a laser transmission scattering detection module, and the right end of the oil guide barrel is communicated with a sampling oil cup. According to the invention, the laser transmission scattering detection module, the RF electronic tag reader, the embolism pump, the injection pump, the cleaning box, the sampling oil cup and the air heater are arranged, the RF electronic tag reader is arranged in the device, the tag number on the sampling cylinder can be automatically read, the whole process from cleaning to oil taking to testing of each container pipeline is tracked and recorded, manual operation is replaced by an automatic oil taking mode, the working intensity is reduced, and the accuracy of oil detection is improved.
Description
Technical Field
The invention belongs to the technical field of oil sampling for electric power, and particularly relates to an oil taking device for transformer oil detection.
Background
In engineering practice, in addition to taking protective measures to prevent the transformer oil in operation from being aged prematurely, an oil sample is taken periodically to carry out an oiling test to know the quality and performance of the insulating oil in operation, in order to standardize the oil detection for equipment such as a power transformer and the like, a sampling method, a sampling part, a sampling tool and the storage and transportation of the oil for the power oil (transformer oil, turbine oil) are clearly specified in an electric oil sampling method, the whole oil taking process is relatively complex, manual operation is required, the efficiency is very low, gas chromatography and water content testing distortion after the oil is taken by the transformer due to the fact that a container is not strictly shielded and cleaned during the manual oil taking process, gas is easily mixed during the oil taking process, and the accurate judgment of the transformer oil is seriously influenced, and the gas content in the transformer oil directly reflects the discharging aging condition of the insulation in the transformer, moreover, the content of gases such as acetylene exceeds the standard, which causes serious accidents such as gas explosion and the like, and is not beneficial to the accurate detection of the transformer oil, so an automatic transformer oil detection and oil extraction device is required to replace manual operation.
Disclosure of Invention
Technical problem to be solved
In order to overcome the defects of the prior art, the invention provides an oil taking device for transformer oil detection, which solves the problems that the accurate judgment of transformer oil is seriously influenced due to the fact that a container is not strictly shaded and cleaned when oil is taken manually, gas is easily mixed in the oil taking process, and the like, gas chromatography and water content testing distortion after the oil is taken by a transformer are caused, the gas content in the transformer oil directly reflects the discharging aging condition of insulation in the transformer, and the excessive gas content such as acetylene can cause severe accidents such as gas explosion and the like, and the accurate detection of the transformer oil is not facilitated.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a transformer oil detects oil extraction device, includes the casing, shells inner wall passes through the outer wall fixed connection of backup pad with oil guide tube, oil guide tube's left end is provided with the connector, the left end of connector is linked together with the right-hand member of pipe, the left end of pipe is linked together with the output of fuel outlet valve, one side of fuel outlet valve is provided with laser transmission scattering detection module, oil guide tube's right-hand member intercommunication has the sample oil cup, the top of sample oil cup is linked together through the output of check valve with the embolism pump, the right side of embolism pump output end is provided with the admission valve, the outer wall of embolism pump passes through the last fixed surface of support and casing and is connected.
The upper surface of shells inner wall and the last fixed surface of air heater fuselage are connected, the output of air heater is linked together with the upper surface of sample oil cup, the outer wall of air heater output is provided with first check valve, the bottom intercommunication of sample oil cup has the tee bend, tee bend top and left end are provided with first solenoid valve and second check valve respectively, tee bend right-hand member and the left end of sampler barrel communicate, the sampler barrel sets up in the injection pump, the lower surface of injection pump and shells inner wall's lower fixed surface are connected, tee bend left end has the waste oil tank through the connecting pipe intercommunication, the lower surface of waste oil tank and shells inner wall's lower fixed surface is connected, the upper surface of waste oil tank is linked together through the lower surface of second solenoid valve and oil guide.
As a further scheme of the invention: liquid level detectors are arranged in the waste oil tank and the sampling oil cup, a label is arranged on the outer wall of the sampling cylinder, and an RF electronic label reader is arranged on the upper surface of the inner wall of the shell corresponding to the position of the injection pump.
As a further scheme of the invention: the upper surface of casing inner wall and the upper surface fixed connection who washs the case, the lower surface that washs the case is linked together through the upper surface of third solenoid valve with leading the oil cylinder, the upper surface that washs the case is provided with the feed liquor valve.
As a further scheme of the invention: the left side of casing and the right flank fixed connection of two protection casings, the right flank of two protection casing inner walls is provided with same peg.
As a further scheme of the invention: the right side of casing upper surface is provided with siren and controller, the controller includes touch-sensitive screen and singlechip, and the output of singlechip passes through drive module and is connected with the input electricity of syringe pump, embolism pump, air heater, first solenoid valve, second solenoid valve and third solenoid valve.
As a further scheme of the invention: the utility model provides a transformer oil detects oil extraction device, includes the following oil extraction step:
s1, firstly installing a sampling cylinder and an injection pump, then connecting a cleaning box to the oil guide cylinder for communication, storing organic cleaning agent and purified water in the cleaning box, and then communicating the waste oil tank with the oil guide cylinder and then communicating the output end of the air heater with the sampling oil cup.
And S2, the RF electronic tag reader works to perform scanning operation, automatically reads the serial number of the tag on the outer wall of the sampling cylinder, and starts to record the operation time and process after oil extraction.
S3, a cleaning program can be started on the touch screen, organic solvents and purified water are respectively used for cleaning each container pipeline according to the cleaning process, polluted liquid is discharged after cleaning and stored in a waste oil tank, an air heater is automatically turned on by the program, and air drying operation is carried out on the container pipelines.
And S4, after the cleaning program is finished, the alarm sounds a finished buzzer, the cleaning finishing characters are displayed on the touch screen, and manual removal of various cleaning connecting pipelines is prompted.
S5, the oil taking device is brought to an oil taking site, the oil taking port is opened by using a special wrench, the oil drain valve interface of the oil taking device is connected with the oil taking port, an oil taking program is opened on a touch screen, the device is operated in a fully closed mode in the oil taking process, and all pipelines and containers are subjected to shading process treatment.
S6, the program can detect the consistency of oil through the laser transmission scattering detection module, and discharge earlier-stage waste oil into a waste oil tank, when the quality of the oil is kept consistent for a long time, the program closes the waste oil pipeline, the oil is input into the sampling oil cup, the sampling oil cup is washed through the plunger pump, the washed oil is discharged into the waste oil tank, then the oil with set volume is injected into the sampling oil cup, the sampling cylinder is washed through the operation of the injection pump, the number of times of washing of the sampling cylinder is 1-2, and after the washing is completed, a quantitative transformer oil sample is taken out through the injection pump.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
1. the invention sets laser transmission scattering detection module, RF electronic label reader, plug pump, injection pump, cleaning box, sampling oil cup and hot air blower, when taking oil, because the laser transmission scattering detection module is set on the oil discharge valve, it can judge whether the oil is waste oil with dead end, to analyze and judge the impurity content in oil, after the oil is stable, it starts to take oil, at the same time, the cleaning box, the second electromagnetic valve, plug pump and hot air blower are matched, it can clean each communicating pipe by organic solvent and pure water, after cleaning, the hot air blower can dry the water in the pipe, through the matching between single chip and touch screen, to realize automatic control of each electric equipment, and summarize and number the information of oil taking time and quantity, and input into database, because the RF electronic tag reader is arranged in the device, the tag number on the sampling cylinder can be automatically read, the whole process from cleaning to oil taking to testing of each container pipeline is tracked and recorded, manual operation is replaced by an automatic oil taking mode, the working intensity is reduced, and the accuracy of oil liquid detection is improved;
2. the invention can open the first electromagnetic valve in the process of cleaning the sampling cylinder by arranging the protective cover, the hanging rod, the liquid level detector, the injection pump, the second one-way valve, the tee joint and the first electromagnetic valve, the injection pump works to effectively pump oil in the sampling oil cup into the sampling cylinder, then the injection pump pushes the oil leftwards, the second electromagnetic valve is closed by the singlechip program, so that the oil can enter the waste oil tank through the second one-way valve, the sampling cylinder is convenient to clean and collect and store the waste oil, the device is operated in a totally-closed mode in the process of taking the oil, the pipeline and the container are subjected to shading treatment, the oil is prevented from being influenced by the environment to reduce the accuracy of oil detection, the liquid level detector is arranged, the oil does not leak beyond the liquid level to influence the oil taking process, and the alarm can automatically give an alarm when the oil exceeds a preset warning value, so that the relevant personnel can be treated in time.
Drawings
FIG. 1 is a schematic cross-sectional view of the front view of the present invention;
FIG. 2 is a schematic front view of a sampling oil cup according to the present invention;
FIG. 3 is a block diagram of the system of the present invention;
in the figure: the device comprises a shell 1, a support plate 2, an oil guide cylinder 3, a connector 4, a guide pipe 5, an oil discharge valve 6, a laser transmission scattering detection module 7, a sampling oil cup 8, a check valve 9, an air inlet valve 10, a plug pump 11, a support 12, a hot air blower 13, a first check valve 14, a tee joint 15, a first electromagnetic valve 16, a second check valve 17, a liquid level detector 18, a connecting pipe 19, a waste oil tank 20, a second electromagnetic valve 21, a cleaning tank 22, a third electromagnetic valve 23, an alarm 24, an injection pump 25, a sampling cylinder 26, a controller 27, an RF electronic tag reader 28, a protective cover 29 and a hanging rod 30.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1-3, the present invention provides a technical solution: a transformer oil detection oil taking device comprises a shell 1, wherein the inner wall of the shell 1 is fixedly connected with the outer wall of an oil guide cylinder 3 through a support plate 2, the left end of the oil guide cylinder 3 is provided with a connector 4, the left end of the connector 4 is communicated with the right end of a guide pipe 5, the left end of the guide pipe 5 is communicated with the output end of an oil drain valve 6, one side of the oil drain valve 6 is provided with a laser transmission scattering detection module 7, the oil drain valve 6 can only flow rightwards when opened due to the arrangement of the oil drain valve 6, the oil cannot flow back, the extraction work of a plug pump 11 is facilitated, the right end of the oil guide cylinder 3 is communicated with a sampling oil cup 8, the top of the sampling oil cup 8 is communicated with the output end of the plug pump 11 through a check valve 9, the right side of the output end of the plug pump 11 is provided with an air inlet valve 10 through the mutual matching between the, the check valve 9 can only ventilate upwards, the air inlet valve 10 can only admit air when the piston in the plug pump 11 reciprocates, so that oil can be effectively extracted and stored in the sampling oil cup 8 when the plug pump 11 works, and the outer wall of the plug pump 11 is fixedly connected with the upper surface of the shell 1 through the support 12.
The upper surface of the inner wall of the shell 1 is fixedly connected with the upper surface of the body of a hot air blower 13, the output end of the hot air blower 13 is communicated with the upper surface of a sampling oil cup 8, the outer wall of the output end of the hot air blower 13 is provided with a first one-way valve 14, the hot air blower 13 can effectively make gas enter the sampling oil cup 8 when working, and the gas and liquid in the sampling oil cup 8 can not be discharged through the output end of the hot air blower 13, so as to ensure the closed environment in the sampling oil cup 8, the bottom of the sampling oil cup 8 is communicated with a tee joint 15, the top and the left end of the tee joint 15 are respectively provided with a first electromagnetic valve 16 and a second one-way valve 17, the right end of the tee joint 15 is communicated with the left end of a sampling cylinder 26, the sampling cylinder 26, an injection pump 25, the first electromagnetic valve 16 and the second one-way valve 17 are arranged, so as to push the oil to the left, so that the oil can enter the waste oil tank 20 through the second one-way valve 17, the waste oil can be conveniently collected and stored while the sampling cylinder 26 is cleaned, the sampling cylinder 26 is arranged in the injection pump 25, the lower surface of the injection pump 25 is fixedly connected with the lower surface of the inner wall of the shell 1, the left end of the three-way valve 15 is communicated with the waste oil tank 20 through the connecting pipe 19, the lower surface of the waste oil tank 20 is fixedly connected with the lower surface of the inner wall of the shell 1, the upper surface of the waste oil tank 20 is communicated with the lower surface of the oil guide cylinder 3 through the second electromagnetic valve 21, the left side surface of the shell 1 is fixedly connected with the right side surfaces of the two protective covers 29, the right side surfaces of the inner walls of the two protective covers 29 are provided with the same hanging rod 30, and when the guide pipe 5 needs to be accommodated, the guide pipe 5 can be wound on the outer wall of the hanging rod 30 to prevent the guide pipe 5, The laser transmission scattering detection module 7 and the oil drain valve 6 protect, and the device is operated in a totally-closed mode in the oil taking process, and the pipeline and the container are all subjected to shading treatment, so that oil is prevented from being influenced by the environment, and the accuracy of oil detection is reduced.
Specifically, as shown in fig. 1 and 2, the liquid level detector 18 is disposed in both the waste oil tank 20 and the sampling oil cup 8, and the mutual cooperation between the liquid level detector 18 and the alarm 24 can ensure that the oil does not leak beyond the liquid level to affect the oil extraction process, when the oil exceeds the preset warning value, the alarm 24 can automatically alarm to enable related personnel to be timely treated, the outer wall of the sampling cylinder 26 is provided with a tag, the upper surface of the inner wall of the shell 1 corresponding to the position of the injection pump 25 is provided with an RF electronic tag reader 28, because of the RF electronic tag reader 28, the tag number on the sampling cylinder 26 can be automatically read and the whole process from the washing to the oil extraction to the testing of each container pipeline can be tracked and recorded, the upper surface of the inner wall of the shell 1 is fixedly connected with the upper surface of the washing tank 22, the lower surface of the washing tank 22 is communicated with the upper surface of the oil guide cylinder 3 through the third electromagnetic valve 23, the upper surface of the cleaning box 22 is provided with a liquid inlet valve, the right side of the upper surface of the shell 1 is provided with an alarm 24 and a controller 27, the controller 27 comprises a touch screen and a single chip microcomputer, and the output end of the single chip microcomputer is electrically connected with the input ends of the injection pump 25, the embolism pump 11, the hot air blower 13, the first electromagnetic valve 16, the second electromagnetic valve 21 and the third electromagnetic valve 23 through a driving module.
The utility model provides a transformer oil detects oil extraction device, includes the following oil extraction step:
s1, firstly installing the sampling cylinder 26 and the injection pump 25, then connecting the cleaning box 22 to the oil guide cylinder 3 for communication, storing organic cleaning agent and purified water in the cleaning box 22, and secondly communicating the waste oil tank 20 with the oil guide cylinder 3 and then communicating the output end of the air heater 13 with the sampling oil cup 8.
S2, the RF tag reader 28 operates to scan the sample cylinder 26, automatically reads the serial number of the tag on the outer wall of the sample cylinder, and starts to record the operation time and process after oil extraction.
S3, a cleaning program can be started on the touch screen, organic solvents and purified water are respectively used for cleaning each container pipeline according to the cleaning process, after cleaning, polluted liquid is discharged and stored in the waste oil tank 20, the hot air blower 13 is automatically turned on by the program, and air drying operation is carried out on the container pipelines.
S4, after the cleaning procedure is finished, the alarm 24 sounds a buzzer to indicate the completion of cleaning on the touch screen, and prompts the operator to remove the various cleaning connection lines.
S5, the oil taking device is brought to an oil taking site, the oil taking port is opened by using a special wrench, the port of the oil drain valve 6 of the oil taking device is connected with the oil taking port, an oil taking program is opened on a touch screen, the device is operated in a fully closed mode in the oil taking process, and all pipelines and containers are subjected to shading process treatment.
S6, the program can detect the consistency of oil quality through the laser transmission scattering detection module 7, and discharge the waste oil in the earlier stage into the waste oil tank 20, when the oil quality is kept consistent for a long time, the program closes the waste oil pipeline, inputs the oil into the sampling oil cup 8, washes the sampling oil cup 8 through the plunger pump, and discharges the washed oil into the waste oil tank 20, then injects the oil with the set volume into the sampling oil cup 8, then washes the sampling cylinder 26 through the work of the injection pump 25, the number of times of washing of the sampling cylinder 26 is 1-2, and after the washing is completed, a quantitative transformer oil sample is taken out through the injection pump 25.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. The utility model provides a transformer oil detects oil extraction device, includes casing (1), its characterized in that: the inner wall of the shell (1) is fixedly connected with the outer wall of the oil guide cylinder (3) through the support plate (2), the left end of the oil guide cylinder (3) is provided with a connector (4), the left end of the connector (4) is communicated with the right end of the guide pipe (5), the left end of the guide pipe (5) is communicated with the output end of the oil drain valve (6), one side of the oil drain valve (6) is provided with a laser transmission scattering detection module (7), the right end of the oil guide cylinder (3) is communicated with a sampling oil cup (8), the top of the sampling oil cup (8) is communicated with the output end of a plug pump (11) through a check valve (9), the right side of the output end of the plug pump (11) is provided with an air inlet valve (10), and the outer wall of the plug pump (11) is fixedly connected with the upper surface of the shell (1) through a support (12;
the upper surface of the inner wall of the shell (1) is fixedly connected with the upper surface of the body of the hot air blower (13), the output end of the hot air blower (13) is communicated with the upper surface of the sampling oil cup (8), the outer wall of the output end of the hot air blower (13) is provided with a first one-way valve (14), the bottom of the sampling oil cup (8) is communicated with a tee joint (15), the top and the left end of the tee joint (15) are respectively provided with a first electromagnetic valve (16) and a second one-way valve (17), the right end of the tee joint (15) is communicated with the left end of a sampling cylinder (26), the sampling cylinder (26) is arranged in an injection pump (25), the lower surface of the injection pump (25) is fixedly connected with the lower surface of the inner wall of the shell (1), the left end of the tee joint (15) is communicated with a waste oil tank (20) through a connecting pipe (19), the lower surface of the waste oil tank (20) is fixedly connected, the upper surface of the waste oil tank (20) is communicated with the lower surface of the oil guide cylinder (3) through a second electromagnetic valve (21).
2. The transformer oil detection and taking device according to claim 1, characterized in that: liquid level detectors (18) are arranged in the waste oil tank (20) and the sampling oil cup (8), a label is arranged on the outer wall of the sampling cylinder (26), and an RF electronic label reader (28) is arranged at the position, corresponding to the injection pump (25), of the upper surface of the inner wall of the shell (1).
3. The transformer oil detection and taking device according to claim 1, characterized in that: the upper surface of casing (1) inner wall and the upper surface fixed connection who washs case (22), the lower surface that washs case (22) is linked together through third solenoid valve (23) and the upper surface of leading oil cylinder (3), the upper surface of wasing case (22) is provided with the feed liquor valve.
4. The transformer oil detection and taking device according to claim 1, characterized in that: the left side of casing (1) and the right flank fixed connection of two protection casings (29), the right flank of two protection casings (29) inner wall is provided with same peg (30).
5. The transformer oil detection and taking device according to claim 1, characterized in that: the right side of casing (1) upper surface is provided with siren (24) and controller (27), controller (27) include touch-sensitive screen and singlechip, and the output of singlechip passes through drive module and is connected with the input electricity of syringe pump (25), embolism pump (11), air heater (13), first solenoid valve (16), second solenoid valve (21) and third solenoid valve (23).
6. The transformer oil detection and taking device according to claim 1, characterized in that: comprises the following oil extraction steps:
s1, firstly installing a sampling cylinder (26) and an injection pump (25), then connecting a cleaning box (22) to the oil guide cylinder (3) for communication, storing an organic cleaning agent and purified water in the cleaning box (22), and secondly communicating a waste oil tank (20) with the oil guide cylinder (3) and then communicating the output end of the hot air blower (13) with the sampling oil cup (8);
s2, the RF electronic tag reader (28) works to scan, automatically reads the serial number of the tag on the outer wall of the sampling cylinder (26), and starts to record the working time and process after oil extraction;
s3, a cleaning program can be started on the touch screen, organic solvents and purified water are respectively used for cleaning each container pipeline according to a cleaning flow, after cleaning, polluted liquid is discharged and stored in a waste oil tank (20), and the hot air blower (13) is automatically turned on by the program to air-dry the container pipeline;
s4, after the cleaning program is finished, the alarm (24) sends out a finished buzzing sound, and the cleaning finished characters are displayed on the touch screen to prompt the user to remove various cleaning connecting pipelines;
s5, bringing the oil taking device to an oil taking site, opening an oil taking port by using a special wrench, connecting an oil drain valve (6) interface of the oil taking device with the oil taking port, opening an oil taking program on a touch screen, wherein the device is operated in a fully closed mode in the oil taking process, and all pipelines and containers are subjected to shading process treatment;
s6, the program can detect the consistency of oil through the laser transmission scattering detection module (7), and discharge earlier-stage waste oil into the waste oil tank (20), when the oil quality keeps consistent for a long time, the program closes the waste oil pipeline, input oil into the sampling oil cup (8), wash the sampling oil cup (8) through the plunger pump, and discharge the washed oil into the waste oil tank (20), then inject the oil mass of the set volume into the sampling oil cup (8), wash the sampling cylinder (26) through the work of the injection pump (25), the number of times that the sampling cylinder (26) washed is 1-2, after washing, take out quantitative transformer oil sample through the injection pump (25).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115839868A (en) * | 2022-10-27 | 2023-03-24 | 山东冽泉环保工程咨询有限公司 | Anti-cleaning head matched with targeted sampling device |
| CN117740454A (en) * | 2024-02-19 | 2024-03-22 | 国网浙江省电力有限公司宁波供电公司 | Transformer oil remote collection method, device and storage medium based on virtual reality |
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| CN211627070U (en) * | 2020-02-10 | 2020-10-02 | 广东电网有限责任公司 | Insulating oil sampling device |
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| CN115839868B (en) * | 2022-10-27 | 2024-01-12 | 山东冽泉环保工程咨询有限公司 | Back-cleaning head matched with target sampling device |
| CN117740454A (en) * | 2024-02-19 | 2024-03-22 | 国网浙江省电力有限公司宁波供电公司 | Transformer oil remote collection method, device and storage medium based on virtual reality |
| CN117740454B (en) * | 2024-02-19 | 2024-05-31 | 国网浙江省电力有限公司宁波供电公司 | Remote collection method and device for transformer oil and storage medium |
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