CN109211620B - Transformer insulating oil sampling device - Google Patents
Transformer insulating oil sampling device Download PDFInfo
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- CN109211620B CN109211620B CN201811172507.XA CN201811172507A CN109211620B CN 109211620 B CN109211620 B CN 109211620B CN 201811172507 A CN201811172507 A CN 201811172507A CN 109211620 B CN109211620 B CN 109211620B
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- 238000005070 sampling Methods 0.000 title claims abstract description 222
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000002699 waste material Substances 0.000 claims description 93
- 238000011084 recovery Methods 0.000 claims description 36
- 238000000605 extraction Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000004140 cleaning Methods 0.000 description 13
- 238000012360 testing method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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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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- General Health & Medical Sciences (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a transformer insulating oil sampling device, which comprises a sampling box body; the sampling box includes: the fixing device is arranged on the surface of the sampling box body; the fixing device is used for fixing the sampling device; the oil way oil inlet port is arranged on the surface of the sampling box body and is used for being connected with an oil taking port of the transformer through a connecting pipe; the first oil outlet port is arranged on the surface of the sampling box body and is used for being connected with first sampling equipment fixed on the fixing equipment through a connecting pipe; the connecting oil way is arranged in the sampling box body; the connecting oil way is respectively connected with the oil way oil inlet port and the first oil outlet port; the connecting oil way is used for transmitting the insulating oil input by the oil way oil inlet port to the first sampling equipment. The transformer insulating oil sampling device can ensure the sealing performance of the whole sampling process and improve the accuracy of the sample oil measurement result.
Description
Technical Field
The invention relates to the technical field of maintenance and detection of transformers, in particular to a device for sampling insulating oil of a voltage transformer.
Background
Power transformers are one of the most critical devices in a power system. Live sampling detection of transformer insulating oil is the most effective method for finding early failure inside the transformer. However, the electrical performance of the insulating oil is easily influenced and disturbed by external moisture, magazines and the like, so that the requirement on the sampling process is high. The sealing performance of the traditional transformer insulating oil in the field sampling process is poor, so that the accuracy of the oil sample test result can be reduced.
Disclosure of Invention
Based on this, it is necessary to provide a transformer insulating oil sampling device for the poor sealing property in the field sampling process of the conventional transformer insulating oil, so that the accuracy of the oil sample test result is reduced.
A transformer insulating oil sampling device comprises a sampling box body; the sampling box includes:
the fixing device is arranged on the surface of the sampling box body; the fixing device is used for fixing the sampling device;
the oil way oil inlet port is arranged on the surface of the sampling box body and is used for being connected with an oil taking port of the transformer through a connecting pipe;
the first oil outlet port is arranged on the surface of the sampling box body and is used for being connected with first sampling equipment fixed on the fixing equipment through a connecting pipe; and
the connecting oil way is arranged in the sampling box body; the connecting oil way is respectively connected with the oil way oil inlet port and the first oil outlet port; the connecting oil way is used for transmitting the insulating oil input by the oil way oil inlet port to the first sampling equipment.
Above-mentioned transformer insulating oil sampling device, the oil circuit advances oil port and is connected with the oil extraction port of transformer through the connecting pipe, and connect the oil circuit then can realize the oil circuit advance oil port and first oil outlet port between be connected, first oil outlet port can be connected through connecting pipe and the first sampling equipment of fixing on fixed equipment to realize the totally enclosed sample from the oil extraction port of transformer to between the first sampling equipment, thereby improve the accuracy to sample oil test result. In the transformer insulating oil sampling device, the connecting oil way is arranged inside the sampling box body, so that the connecting oil way is not easy to damage, the sealing performance of the whole sampling process is further ensured, and the accuracy of the sample oil measuring result is improved.
In one embodiment, the fixing device is used for enabling the height of the oil filling port of the first sampling device to be larger than the height of other parts of the first sampling device when the first sampling device is fixed on the fixing device to sample.
In one embodiment, the sampling tank further comprises a waste oil output port; the waste oil output port is arranged on the surface of the sampling box body; the waste oil output port is connected with the connecting oil way; the waste oil output port is also used for being connected with waste oil recovery equipment through a connecting pipe so as to recover waste oil generated in the sampling process into the waste oil recovery equipment through the waste oil output port.
In one embodiment, the connecting oil path comprises a main oil path, a first oil taking oil path, a waste oil discharging oil path, a gating device, an oil inlet oil path and a first switching device; the sampling box body further comprises an operation panel arranged on the surface of the box body;
the main oil way is connected between the oil way oil inlet port and the waste oil output port; the first switch device is arranged at one end of the main oil way, which is close to the waste oil output port; one end of the first oil taking oil way is connected with the main oil way; the other end of the first oil taking oil way is connected with the gating equipment; one end of the waste oil discharge oil circuit is connected with the gating equipment; the other end of the waste oil discharge oil way is used for being connected with the waste oil recovery equipment; the oil inlet circuit is connected between the gating equipment and the first oil outlet port; the control panel is provided with a control device for controlling the gating device and the first switching device.
In one embodiment, the surface of the sampling box body is further provided with a second oil outlet port; the second oil outlet port is used for being connected with second sampling equipment which is not fixed on the fixed equipment; the connecting oil circuit further comprises a second oil taking oil circuit and second switching equipment; the second oil taking oil way is connected between the main oil way and the second oil outlet port; the second switch device is used for controlling the on-off of the second oil taking oil way; and a control device for controlling the second switch device is also arranged on the control panel.
In one embodiment, the sampling box further comprises a display panel; a temperature sensor is also arranged in the sampling box body; the temperature sensor is used for detecting the temperature of the insulating oil transmitted from the oil inlet port of the oil way; the display panel is connected with the temperature sensor and used for displaying the temperature detected by the temperature sensor.
In one embodiment, the transformer insulating oil sampling device further comprises a containing box body; the accommodating box body is rotatably connected with the sampling box body, and the sampling box body is used as a cover body of the accommodating box body; the accommodating box body is provided with a first storage clamping position for accommodating the first sampling equipment, a second storage clamping position for accommodating the second sampling equipment and a third storage clamping position for accommodating the waste oil recovery equipment.
In one embodiment, the accommodating box further comprises a fourth accommodating clamp for accommodating the power supply device; the transformer insulating oil sampling device further comprises power supply equipment, electric quantity detection equipment and electric quantity display equipment; the power supply equipment is arranged in the fourth storage clamping position; the electric quantity detection device is used for detecting the residual electric quantity of the power supply device and displaying the residual electric quantity through the electric quantity display device.
In one embodiment, the transformer insulating oil sampling device further comprises waste oil recovery equipment, a liquid level sensor and liquid level indicating equipment; the waste oil recovery device is arranged on the third storage clamping position; the liquid level sensor is used for monitoring the liquid level of waste oil in the waste oil recovery device; the liquid level indicating equipment is arranged on the surface of the sampling box body and used for displaying the liquid level.
In one embodiment, the sampling box body is further provided with an oil level alarm device and a control device for resetting or stopping the oil level alarm device; the oil level alarm device is used for giving an alarm when the liquid level of the waste oil exceeds a preset value.
Drawings
FIG. 1 is a schematic diagram of a transformer insulating oil sampling device according to an embodiment;
FIG. 2 is a schematic diagram of a structure of a connecting oil path in an embodiment;
fig. 3 is a schematic structural diagram of a transformer insulating oil sampling device according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In the description of the present application, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Furthermore, it will be understood that when an element is referred to as being "formed on" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
Fig. 1 is a schematic structural diagram of a transformer insulating oil sampling device in an embodiment, which can perform full-sealed sampling on insulating oil in a transformer, so as to ensure accuracy of a sample oil test result. In the present embodiment, a transformer insulating oil sampling device (hereinafter referred to as sampling device) includes a sampling case 100. The sampling housing 100 includes a fixture 102, an oil inlet port 104, a first oil outlet port 106, and a connecting oil passage (not shown). Wherein, the fixing device 102, the oil inlet 104, and the first oil outlet 106 are all disposed on the surface of the sampling box 100. The connecting oil passage is provided inside the sampling case 100.
The fixing device 102 is used for fixing the first sampling device 10. The fixing device 102 may use a common snap-fit structure to fix the first sampling device 10. The first sampling device 10 may include various sampling devices capable of containing insulating oil, such as a syringe, a sampling bottle, and the like. In order to provide the fixture 102 with better fixture performance, the fixture 102 may be adapted to the specific configuration of the first sampling device 10. For example, when the first sampling device 10 is a syringe, the catch of the securing device 102 is an annular catch. In one embodiment, to ensure that quantitative sampling can be achieved, the first sampling device 10 with a scale is selected for sampling.
The oil inlet port 104 of the oil way is used for being connected with an oil taking port of the transformer through a connecting pipe. For transformers with different specifications, when the specifications of the oil taking valve are not uniform, the connection between the oil taking port of the transformer and the oil way oil inlet port 104 can be realized by replacing the connecting pipe, so that the full tightness in the oil taking process is realized.
The first oil outlet 106 is connected to the first sampling device 10 by a connecting pipe. In one embodiment, the first oil outlet port 106, the oil inlet port 104, and the fixture 102 are all disposed on the same surface of the sampling tank 100. The surface is typically operated by a user and may be referred to as an operating surface. Specifically, the first oil outlet port 106 and the oil inlet port 104 may be far away from each other, that is, when the oil inlet port 104 is disposed at the lower portion of the sampling box 100, the first oil outlet port 106 is disposed at the upper portion of the sampling box 100, so that the flowing process of the insulating oil from the oil inlet port 104 to the first oil outlet port 106 is from bottom to top, which can reduce air in the sample oil and improve accuracy of the test result. In this case, since the sampling case 100 has a fixed placement orientation during sampling, the aforementioned orientations are all based on the orientation in this state.
The connection oil passage is provided inside the sampling tank 100. The connecting oil paths are respectively connected with the oil path oil inlet port 104 and the first oil outlet 106, so that insulating oil input by the oil path oil inlet port 104 is transmitted to the first oil outlet 106 and then is output to the first sampling equipment 10 connected with the first oil outlet 106, and the first sampling equipment 10 samples. It will be appreciated that after the first sampling device 10 has completed sampling, it is removed and the filling port is sealed to prevent its exposure to air from being affected by the air, thereby reducing the accuracy of the measurement.
According to the transformer insulating oil sampling device, the oil way oil inlet port 104 is connected with the oil taking port of the transformer through the connecting pipe, the connection between the oil way oil inlet port 104 and the first oil outlet port 106 can be realized by connecting the oil way, the first oil outlet port 106 can be connected with the first sampling equipment 10 fixed on the fixing equipment 102 through the connecting pipe, so that the full-sealed sampling from the oil taking port of the transformer to the first sampling equipment 10 is realized, and the accuracy of a sample oil test result is improved. In the transformer insulating oil sampling device, the connecting oil way is arranged inside the sampling box body 100, so that the connecting oil way is not easy to damage due to friction, wind and weather, and the like, the sealing performance of the whole sampling process is further ensured, and the accuracy of the sample oil measurement result is improved.
In an embodiment, the fixing device 102 makes the height of the oil filling port 12 of the first sampling device 10 greater than the height of other parts of the first sampling device 10 when the first sampling device 10 is fixed on the fixing device 102 for sampling. The height mentioned in this embodiment refers to the height from the bottom surface of the sampling case 100. In the present embodiment, the fixing device 102 is used to horizontally fix the first sampling device 10 to the surface of the sampling housing 100, that is, to the operation surface thereof. During sampling, the operation surface will be placed vertically and the oil filling port 12 of the first sampling device 10 will be located above. At this time, the first oil outlet port 106 is provided near the oil filler port 12. In the sampling process, the height of the oil filling port 12 of the first sampling device 10 is set to be higher than the height of other parts of the first sampling device 10, so that injection is performed from the top in the sampling process, bubbles are avoided in the injection process, and the removal of the bubbles is facilitated. The generated bubbles easily affect the measurement result, and the accuracy of measurement may be lowered. In other embodiments, the fixing device 102 may also set the first sampling device 10 at a certain inclination angle with respect to the operation surface. In sampling, the surface of the sampling case 100 opposite to the operation surface is used as the bottom surface, and the effect that the oil filling port 12 is higher than other parts can be achieved as well.
In one embodiment, the sampling tank 100 further includes a waste oil output port 108. The waste oil output port 108 and the oil way oil inlet port 104 and the first oil outlet 106 can be arranged on the same operation surface, so that the operation is convenient for a user. The waste oil output port 108 is connected to the connecting oil passage. The waste oil output port 108 is also used to connect with a waste oil recovery apparatus through a connecting pipe, so that waste oil generated in the sampling process is recovered into the waste oil recovery apparatus through the waste oil output port 108. In the process of sampling the transformer insulating oil, the connecting oil way, the first sampling equipment 10 and the like need to be cleaned before each sampling, so that the finally obtained sample oil can truly represent the state of the transformer in sampling, and the measurement accuracy is improved. The cleaning process is usually to clean the transformer by using the insulating oil output from the oil extraction port of the transformer after the pipelines are connected, so that the insulating oil for cleaning becomes waste oil. If the waste oil is directly discharged, the waste oil pollutes the environment and causes resource waste. In this embodiment, it is retrieved through waste oil recovery equipment, can reduce the pollution to the environment and realize the reuse of waste oil to reach the purpose of environmental protection. Therefore, the transformer insulating oil sampling device in this embodiment may also be referred to as an environment-friendly sealed sampling device for transformer insulating oil. The waste oil recovery device can be a part of the transformer insulating oil sampling device, can also be an external independent recovery device, and can collect the part of waste oil.
Fig. 2 is a schematic structural diagram of a connecting oil path in an embodiment. The connection includes a main oil path 200, a first oil extraction oil path 202, a waste oil discharge oil path 204, a gating device 206, an oil feed oil path 208, and a first switching device 210. At this time, the surface of the sampling box 100 is also provided with a corresponding control panel 110. Specifically, the main oil passage 200 is connected between the oil passage oil inlet port 104 and the waste oil recovery port 108. The first switching device 210 is disposed on the main oil passage 200 near the end where the waste oil recovery port 108 is located. The first switching device 210 is used to control the connection between the main oil passage 200 and the waste oil recovery port 108. At this time, the control panel 110 is provided with a control device 110b for controlling the first switching device 210. The control device 110b may be a physical key, a virtual key, a voice control device, a touch key, or the like. In this embodiment, the control device 110b is a physical key. Each time the control device 110b presses down, the switching state of the first switching device 210 is switched accordingly.
One end of the first oil extraction oil passage 202 is connected to the main oil passage 200. The other end of the first oil extraction oil path 202 is connected to a gating device 206. One end of the waste oil discharge passage 204 is connected to the gating device 206. The other end of the waste oil discharge passage 204 is used for connection with the waste oil recovery apparatus 30. An oil feed passage 208 is connected between the gating device 206 and the first oil outlet port 106. The control panel 110 is also provided with a control device 110a for controlling the gating device 206. The gating device 206 may be a battery valve. Specifically, before sampling, the control device 110a controls the gating device 206 to communicate the first oil taking oil path 202 with the oil inlet oil path 208, and at this time, the first sampling device 10 may be cleaned according to a set sampling amount, that is, a preset amount of insulating oil is taken as in the sampling process of the sample oil, so that after injection is completed, the gating device 206 is connected to the waste oil draining oil path 204 through the control device 110a, so that the generated waste oil is recovered to the waste oil recovery device 30 through the waste oil draining oil path 204. If the cleaning is needed for a plurality of times, the oil extraction and discharge operation is repeated. The user only needs to press the control device 110a several times, and the operation is simple and convenient. In this embodiment, for automatic oil extraction and automatic oil discharge, a corresponding driving device (not shown) is also provided. The driving device is mainly used for driving the first sampling device 10 to automatically take and discharge oil.
In an embodiment, the surface of the sampling tank 100 is further provided with a second oil outlet 112. The second oil outlet 112 is used for connection with the second sampling device 20 which is not fixed to the fixing device 102. In an embodiment, the number of the fixing devices 102 is two or more, and the number of the corresponding first sampling devices 10 is also plural, and quantitative sampling can be performed. At this time, the control devices 110a are also plural, and each control device 110a is configured to control one gating device 206. By adopting a plurality of fixing devices 102 to fix a plurality of first sampling devices 10 for sampling, simultaneous quantitative sampling of different experimental projects can be realized, and the field working efficiency and the quantitative accuracy are improved. In addition, when the sampling device provided by the fixing device 102 cannot meet the requirement of use, the sampling device can be connected with the second sampling device 20 which is not fixed on the fixing device 102 through the second oil outlet 112. The second sampling device 20 may employ the same components as the first sampling device 10. The second sampling device 20 may be directly secured by other devices to meet the expansion needs of the sampling device.
In the present embodiment, the connection oil passage further includes a second oil extraction oil passage 212 and a second switching device 214. The second oil extraction passage 212 is connected between the main oil passage 200 and the second oil outlet port 112. The second switching device 214 is disposed on the second oil extraction oil path 212, and is configured to control on-off of the second oil extraction oil path 212, so as to control whether the second oil outlet 112 outputs insulating oil outwards to enable the second sampling device 20 to sample. Likewise, the control panel 110 is further provided with a control device 110c for controlling the second switching device 214. At this time, since the second sampling device 20 is not fixed, it can be directly operated by a user at the time of discharging the waste oil, and poured into the waste oil recovery device 30 through the injection port 34 on the waste oil recovery device 30.
In one embodiment, the sampling box 100 further includes a display panel 124. Specifically, a temperature sensor 216 is also disposed within the sampling tank 100. The temperature sensor 216 is disposed at the oil inlet end of the entire connecting oil passage as shown in fig. 2. The temperature sensor 216 is used for detecting the temperature of the insulating oil transmitted from the oil inlet port 104. The display panel 124 is used for displaying the temperature detected by the temperature sensor 216, so that a user can know the temperature of the insulating oil of the transformer conveniently.
In one embodiment, the transformer insulating oil sampling device further comprises a housing case 300, as shown in fig. 3. The contents marked in fig. 1 are not repeatedly marked in fig. 3. The housing case 300 may be rotatably coupled to the sampling case 100, such as by a hinge or a pivot. In this embodiment, the two are connected by a hinge 410. Moreover, the sampling case 100 may be a case structure formed by closing a cover for accommodating the case 300. And for convenience of carrying, the holding case 300 and the sampling case 100 may be further provided with a locking structure 140, so that the two are fixed by the locking structure 140. In this embodiment, to ensure that the injection port 12 is higher than the other parts of the first sampling device 10 during sampling, an angle is required between the sampling box 100 and the accommodating box 300 when the sampling box is opened.
In one embodiment, the housing case 300 has formed thereon a first storage card 310 for housing the first sampling device 10, a second storage card for housing the second sampling device 20, and a third storage card for housing the waste oil recovery device 30. At this time, the above-described transformer insulating oil sampling device may further include a waste oil recovery apparatus 30, a liquid level sensor 32, and a liquid level indicator 122. The waste oil recovery apparatus 30 is provided on the third storage card 330. By the self-contained waste oil recovery device 30, the waste oil can be ensured not to be discharged randomly at any time, the environmental pollution is reduced, and the recovery utilization rate of the waste oil is improved. The level sensor 32 is used to detect the level of waste oil in the waste oil recovery device 30 and is displayed by the level indicating device 122. The level indicating device 122 may be a digital level display or an LED display. When it employs LED display, then the current liquid level state needs to be represented by the number of LEDs that are lit by providing a plurality of LEDs. In other embodiments, the fluid level display device 122 may be a display panel, such that the display is in one panel or in a different display panel than the temperature.
In one embodiment, the sampling tank 100 is further provided with an oil level warning device (not shown). The oil level alarm device is used for giving an alarm when the liquid level of the waste oil exceeds a preset value. The alarm can be sent out by flashing or lighting the prompting lamp, and can be broadcast by voice and the like. In the present embodiment, a control device 110e that performs reset control or stop control of the oil level warning device is also provided on the manipulation panel. The oil level alarm device can ensure that the waste oil in the waste oil recovery device is below a preset value, so that the problem of oil leakage easily occurring when the liquid level monitoring is lacked is avoided.
In one embodiment, the housing case 300 further includes a fourth storage card 340 for housing the power supply apparatus. At this time, the transformer insulating oil sampling apparatus further includes a power supply device, an electric quantity detecting device (not shown), and an electric quantity display device 126. The power supply device is used for providing power for the whole sampling device. At this time, the control panel 110 is further provided with a corresponding power switch 110d to turn on or off the power. The power detection device is used for measuring the residual power of the power supply device and displaying the measured residual power through the power display device 126, so that a user can check the power state conveniently and charge the power supply device in time.
In one embodiment, the first sampling device 10 may be two 100mL syringes, and the second sampling device 20 may be a 500mL sampling bottle, with a capacity of 5L for the waste oil recovery device 30.
The sampling device of the present embodiment is further described below in connection with a specific operational procedure, in which the first sampling device 10 comprises two syringes. The second sampling device 20 is a sampling bottle.
The operation total flow is as follows: cleaning an oil way, taking oil, finishing oil taking, and discharging waste oil.
The first step: cleaning oil way
1. And the oil way oil inlet 104 is connected, and the first sampling device 10 is placed on the fixed device 102 or the second sampling device 20 is connected with the second oil outlet 112. The oil extraction valve is opened, and finally the power switch 110d is turned on.
2. Cleaning an oil way: the control device 110b is operated such that the first switching device 210 operates. The first switching device 210 is powered off after being operated for a period of time, and the oil path is cut off, thereby completing cleaning of the oil path.
3. Cleaning a syringe: the control equipment 110a corresponding to the injector to be cleaned is pressed down, the oil sample flows into the injector, after the sampling amount reaches a set value, the electromagnetic valve is powered off, the control equipment 110a is pressed down again, the oil sample in the injector is automatically pushed out, and one cleaning operation is completed. (this step can be repeated 2 to 3 times, ensuring thorough cleaning).
4. Cleaning a sampling bottle: pressing down the control device 110c, the oil sample flows into the sampling bottle, after the visual sampling amount reaches a predetermined value, the electromagnetic valve is powered off, and after the sampling bottle is manually flushed, the waste oil is poured into the waste oil tank 20, and a cleaning operation is completed. (this step can be repeated 2 to 3 times, ensuring thorough cleaning).
And a second step of: oil extraction
1. Taking oil from a syringe: pressing down the control device 110a, enabling the oil sample to flow into the injector, powering off the electromagnetic valve after the sampling amount reaches a set value, manually taking down the injector, and installing a sealing cap to finish the oil taking operation.
2. Sampling oil from a sampling bottle: pressing down the control device 110c, enabling the oil sample to flow into the sampling bottle, powering off the electromagnetic valve after the visual sampling amount reaches a set value, manually taking down the sampling bottle, and completing sampling after sealing.
And a third step of: finish oil extraction
Pressing the power switch 110d, powering off the sampling device, closing the oil extraction valve, and removing the oil extraction pipe to complete the oil extraction operation.
Fourth step: waste oil is discharged
Waste oil recovery apparatus 30 discharges waste oil: after the oil level alarm device alarms, after the waste oil discharge port of the waste oil recovery device 30 is connected with the oil discharge pipe, the waste oil ball valve is opened to start oil discharge, after the oil discharge is completed, the ball valve is closed, the oil discharge pipe is detached, and the waste oil discharge of the waste oil recovery device 30 is completed.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (8)
1. A transformer insulating oil sampling device, comprising a sampling box body, wherein the sampling box body comprises an operation surface; the sampling box includes:
the fixing device is arranged on the operation surface of the sampling box body; the fixing device is used for fixing the sampling device;
an oil inlet port of the oil way is arranged on the operation surface of the sampling box body and is used for being connected with an oil taking port of the transformer through a connecting pipe;
the first oil outlet port is arranged on the operation surface of the sampling box body and is used for being connected with first sampling equipment fixed on the operation surface of the sampling box body by the fixing equipment through a connecting pipe; the first oil outlet port is higher than the oil inlet port of the oil way, and is used for enabling the insulating oil to flow from the oil inlet port of the oil way to the first oil outlet port in the sampling process from bottom to top; and
the connecting oil way is arranged in the sampling box body; the connecting oil way is respectively connected with the oil way oil inlet port and the first oil outlet port; the connecting oil way is used for transmitting the insulating oil input by the oil way oil inlet port to the first sampling equipment;
the fixing device is used for enabling the height of an oil filling port of the first sampling device to be larger than the height of other parts of the first sampling device when the first sampling device is fixed on the fixing device for sampling, and insulating oil is filled from the top of the first sampling device to the bottom in the sampling process; wherein the height is the height from the bottom surface of the sampling box body;
the sampling box body also comprises a waste oil output port; the waste oil output port is arranged on the operation surface of the sampling box body; the waste oil output port is connected with the connecting oil way; the waste oil output port is also used for being connected with waste oil recovery equipment through a connecting pipe so as to recover waste oil generated in the sampling process into the waste oil recovery equipment through the waste oil output port;
the fixing device, the oil way oil inlet port, the first oil outlet port and the waste oil output port are all arranged on the same operation surface of the sampling box body.
2. The transformer insulating oil sampling device according to claim 1, wherein the connecting oil path comprises a main oil path, a first oil extraction oil path, a waste oil discharge oil path, a gating device, an oil inlet oil path and a first switching device; the sampling box body further comprises a control panel arranged on the operation surface of the box body;
the main oil way is connected between the oil way oil inlet port and the waste oil output port; the first switch device is arranged at one end of the main oil way, which is close to the waste oil output port; one end of the first oil taking oil way is connected with the main oil way; the other end of the first oil taking oil way is connected with the gating equipment; one end of the waste oil discharge oil circuit is connected with the gating equipment; the other end of the waste oil discharge oil way is used for being connected with the waste oil recovery equipment; the oil inlet circuit is connected between the gating equipment and the first oil outlet port; the control panel is provided with a control device for controlling the gating device and the first switching device.
3. The transformer insulating oil sampling device according to claim 2, wherein the operating surface of the sampling tank is further provided with a second oil outlet port; the second oil outlet port is used for being connected with second sampling equipment which is not fixed on the fixed equipment; the connecting oil circuit further comprises a second oil taking oil circuit and second switching equipment; the second oil taking oil way is connected between the main oil way and the second oil outlet port; the second switch device is used for controlling the on-off of the second oil taking oil way; and a control device for controlling the second switch device is also arranged on the control panel.
4. The transformer insulating oil sampling device of claim 3, wherein the sampling box further comprises a display panel; a temperature sensor is also arranged in the sampling box body; the temperature sensor is used for detecting the temperature of the insulating oil transmitted from the oil inlet port of the oil way; the display panel is connected with the temperature sensor and used for displaying the temperature detected by the temperature sensor.
5. The transformer insulating oil sampling device of claim 3, further comprising a containment tank; the accommodating box body is rotatably connected with the sampling box body, and the sampling box body is used as a cover body of the accommodating box body; the accommodating box body is provided with a first storage clamping position for accommodating the first sampling equipment, a second storage clamping position for accommodating the second sampling equipment and a third storage clamping position for accommodating the waste oil recovery equipment.
6. The transformer insulating oil sampling device according to claim 5, wherein the housing case further comprises a fourth storage detent for housing a power supply apparatus; the transformer insulating oil sampling device further comprises power supply equipment, electric quantity detection equipment and electric quantity display equipment; the power supply equipment is arranged in the fourth storage clamping position; the electric quantity detection device is used for detecting the residual electric quantity of the power supply device and displaying the residual electric quantity through the electric quantity display device.
7. The transformer insulating oil sampling device of claim 5, further comprising a liquid level sensor and a liquid level indicating apparatus; the waste oil recovery device is arranged on the third storage clamping position; the liquid level sensor is used for monitoring the liquid level of waste oil in the waste oil recovery device; the liquid level indicating equipment is arranged on the surface of the sampling box body and used for displaying the liquid level.
8. The transformer insulating oil sampling device according to claim 7, wherein the sampling box body is further provided with an oil level alarm device and a control device for resetting or stopping the oil level alarm device; the oil level alarm device is used for giving an alarm when the liquid level of the waste oil exceeds a preset value.
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| CN201811172507.XA CN109211620B (en) | 2018-10-09 | 2018-10-09 | Transformer insulating oil sampling device |
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| CN201811172507.XA CN109211620B (en) | 2018-10-09 | 2018-10-09 | Transformer insulating oil sampling device |
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| CN109211620B true CN109211620B (en) | 2024-02-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111879569A (en) * | 2020-08-31 | 2020-11-03 | 朔黄铁路发展有限责任公司 | Insulating oil extraction device and method |
| CN112326355A (en) * | 2020-11-10 | 2021-02-05 | 中国石油大学(华东) | Oil gas field development is with oil appearance collection system |
| CN112255044B (en) * | 2020-11-11 | 2024-04-09 | 海南电网有限责任公司电力科学研究院 | Portable step-by-step automatic oil taking device for oil chromatograph |
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