CN110828121A - Side leakage and vacuum oil injection equipment - Google Patents
Side leakage and vacuum oil injection equipment Download PDFInfo
- Publication number
- CN110828121A CN110828121A CN201911138310.9A CN201911138310A CN110828121A CN 110828121 A CN110828121 A CN 110828121A CN 201911138310 A CN201911138310 A CN 201911138310A CN 110828121 A CN110828121 A CN 110828121A
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- oil
- fixedly arranged
- storage tank
- pump
- plate
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000005086 pumping Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 10
- 239000003921 oil Substances 0.000 description 93
- 238000010586 diagram Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a side leakage and vacuum oil injection device, which comprises a machine body, a control cabinet, a pump machine, a water tank, an oil storage tank, a vacuum pump, a placing table top, a clamping layer, an oil pump machine, an upper platform, a connecting plate, a connecting rod, an oil filling appliance and an oil pumping head, wherein the upper platform is fixedly arranged above the machine body, the oil storage tank is fixedly arranged below the upper platform, the oil storage tank and the upper platform are mutually connected through a side baffle, the space among the oil storage tank, the upper platform and the side baffles at two sides is an internal working space, the upper panel of the oil storage tank is the placing table top, a flow valve and a clamping layer are fixedly arranged on the placing table top, a lower flow plate, a clamping layer and an upper flow plate are fixedly arranged above the placing table top, two sides of the lower flow plate, the clamping layer and the upper flow plate are all fixed on the side baffles, the flow valve penetrates through the lower flow plate, the upper part of the upper circulating plate is connected with a transmission oil pipe, and the oil injection device is high in oil injection efficiency and high in oil utilization rate.
Description
Technical Field
The invention relates to oil injection equipment, in particular to side leakage and vacuum oil injection equipment, and belongs to the technical field of oil injection.
Background
The vacuum oil injection equipment is mainly used for vacuum oil injection of amorphous alloy transformers, high-voltage oil immersed transformers and capacitors. The vacuum oiling device can also be used for vacuum oiling of other electric products. The oil treatment equipment is used for vacuum filtration treatment of transformer oil for oil immersed transformers with 500KV voltage level and below. The device is suitable for machines working under pressure, such as air/natural gas CNG compressors, reciprocating pumps, forging presses, engines and the like. When the machine works, the friction parts are forcibly injected with lubricating oil to reduce the abrasion of parts and ensure the normal operation of the machine. For pressure lubrication of mechanical transmission equipment in chemical industry, oil refining, refrigeration, oxygen production, metallurgy, mining machinery, marine engines, heavy tractors, rubber, plastics, printing machinery, light textile industry and the like
The former oiling equipment has low oiling efficiency, low speed, large oil consumption, non-recoverability and waste of a large amount of resources.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide side leakage and vacuum oil injection equipment.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a side leakage and vacuum oil injection device which comprises a machine body, a control cabinet, a pump machine, a water tank, an oil storage tank, a vacuum pump, a placing table top, a clamping layer, an oil pump machine, an upper platform, a connecting plate, a connecting rod, an oil filling appliance and an oil pumping head, wherein the upper platform is fixedly arranged above the machine body, the oil storage tank is fixedly arranged below the upper platform, the oil storage tank and the upper platform are mutually connected through a side baffle, the space among the oil storage tank, the upper platform and the side baffles at two sides is an internal working space, the upper panel of the oil storage tank is the placing table top, a circulation valve and a clamping layer are fixedly arranged on the placing table top, a lower circulation plate, a clamping layer and an upper circulation plate are fixedly arranged above the placing table top, two sides of the lower circulation plate, the clamping layer and the upper circulation plate are all fixed on the side baffles, and the circulation valve passes through the, the circulation valve is communicated with the lower circulation plate, a transmission oil pipe is connected above the upper circulation plate, the transmission oil pipe penetrates through the upper platform to be connected with the oil pump, and the oil pump penetrates through an oil through hole in the side face of the oil storage tank through a pipeline to enter the oil storage tank.
As a preferred technical proposal of the invention, the side surface of the machine body is fixedly provided with a control cabinet and a water tank, the side surface of the control cabinet is hinged with a door, a side door handle is fixedly arranged on the door, a time display, a time setting button, a vacuum pump switch, a water testing switch, a starting button and a stopping button are fixedly arranged outside the cabinet, a time setting button is fixedly arranged on one side of the time display, a vacuum pump switch, a water test switch, a start button and a stop button are fixedly arranged below the time display, the control cabinet is connected with a pump machine through a wire, the pump machine is connected with a water tank through a pipeline, the water tank passes through a water through hole through a pipeline and is connected with an oil storage tank, the other side of the machine body is fixedly provided with a baffle, a vacuum pump is fixedly arranged above the baffle, an exhaust pipe and an exhaust pipe are connected above the vacuum pump, and the vacuum pump penetrates through an exhaust opening through the exhaust pipe to be connected with an oil storage tank.
As a preferred technical scheme of the present invention, the flow valves are connected to each other through a connecting rod, a connecting plate is fixedly disposed at the upper end of each flow valve, an oil pumping head is fixedly disposed below each flow valve, the oil pumping head is inserted into an oil filling device, and the oil filling device is fixed on a placement table.
As a preferable technical scheme of the invention, a support rod is fixedly arranged on the placing desktop, and the support rod passes through the lower circulating plate and is propped against the lower part of the upper circulating plate.
As a preferred embodiment of the invention, the clamping layer clamps the flow valve inside.
As a preferable technical solution of the present invention, an oil outlet switch is fixedly disposed on one side of the lower flow plate, a fixing patch is disposed between the oil outlet switch and the lower flow plate, and the oil outlet switch is connected to the flow valve.
As a preferable technical scheme of the invention, two support rods are fixedly arranged and are respectively arranged at two sides of the placing table top, and the support rods penetrate through the lower circulating plate and the upper circulating plate. The support rod is of a hollow structure and is connected with the oil return port.
As a preferable technical solution of the present invention, a support leg is fixedly provided below the machine body.
As a preferred technical solution of the present invention, an alarm lamp is fixedly disposed outside the control cabinet.
The invention has the following beneficial effects: according to the invention, the water testing switch on the control case is clicked, the pump machine flushes water in the water tank into the oil storage tank, the vacuum pump is started, the air exhaust pipe can exhaust internal air and then the air is exhausted through the air exhaust pipe, the vacuum effect in the oil storage tank is ensured, the starting button is clicked, the oil pump machine sucks water out of the oil storage tank and then exhausts the water into the upper circulating plate, the water enters the lower circulating plate from the upper circulating plate through the supporting rod, the oil outlet switch is opened, and the water can be exhausted through the oil pump head.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a side-leakage vacuum oiling device according to the present invention;
FIG. 2 is a schematic structural diagram of a vacuum pump in the side-leakage vacuum oiling device of the present invention;
FIG. 3 is a schematic structural diagram of a side-leakage vacuum oiling device A of the present invention;
fig. 4 is a schematic structural diagram of an oil storage tank in the side leakage and vacuum oiling device.
In the figure: 1. a body; 2. a time display; 3. a time setting button; 4. a control cabinet; 5. a side door handle; 6. a vacuum pump switch; 7. a water testing switch; 8. a start button; 9. an electric wire; 10. a pump machine; 11. a stop button; 12. a water tank; 13. a pipeline; 14. a support leg; 15. an oil outlet switch; 16. fixing the patch; 17. an oil storage tank; 18. a baffle plate; 19. a vacuum pump; 20. an interior working space; 21. placing a desktop; 22. a lower flow plate; 23. a clamping layer; 24. a support bar; 25. an upper circulation plate; 26. a transfer tubing; 27. an oil pump; 28. an alarm light; 29. an upper platform; 30. a connecting plate; 31. a connecting rod; 32. a flow-through valve; 33. an oil-filled appliance; 34. an oil pumping head; 35. an air exhaust pipe; 36. discharging the air pipe; 37. an air extraction opening; 38. an oil through hole; 39. a water inlet; 40. and an oil return port.
Detailed Description
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.
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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1-4, a side leakage and vacuum oil injection device comprises a machine body 1, a control cabinet 4, a pump 10, a water tank 12, an oil storage tank 17, a vacuum pump 19, a placing table 21, a clamping layer 23, an oil pump 27, an upper platform 29, a connecting plate 30, a connecting rod 31, an oil filling device 33 and a pump oil head 34, wherein the upper platform 29 is fixedly arranged above the machine body 1, the oil storage tank 17 is fixedly arranged below the upper platform 29, the oil storage tank 17 and the upper platform 29 are connected with each other through a side baffle 18, the space between the oil storage tank 17 and the upper platform 29 and the side baffles 18 at two sides is an internal working space 20, the upper panel of the oil storage tank 17 is the placing table 21, a flow valve 32 and a clamping layer 23 are fixedly arranged on the placing table 21, a lower flow plate 22, a clamping layer 23 and an upper flow plate 25 are fixedly arranged above the placing table 21, the lower circulating plate 22, the clamping layer 23 and the upper circulating plate 25 are fixed on the side baffle 18 on two sides, the circulating valve 32 penetrates through the lower circulating plate 22, the circulating valve 32 is communicated with the lower circulating plate 22, a conveying oil pipe 26 is connected above the upper circulating plate 25, the conveying oil pipe 26 penetrates through the upper platform 29 and is connected with the oil pump 27, and the oil pump 27 penetrates through an oil through opening 38 on the side of the oil storage tank 17 through a pipeline 13 and enters the oil storage tank 17.
Further, a control cabinet 4 and a water tank 12 are fixedly arranged on the side face of the machine body 1, a side hinge of the control cabinet 4 is connected with a door, a side door handle 5 is fixedly arranged on the door, a time display 2, a time setting button 3, a vacuum pump switch 6, a water testing switch 7, a starting button 8 and a stopping button 11 are fixedly arranged outside the machine body 1, the time setting button 3 is fixedly arranged on one side of the time display 2, the vacuum pump switch 6, the water testing switch 7, the starting button 8 and the stopping button 11 are fixedly arranged below the time display 2, the control cabinet 4 is connected with a pump 10 through an electric wire 9, the pump 10 is connected with the water tank 12 through a pipeline 13, the water tank 12 penetrates through a water through port 39 to be connected with a water storage tank 17 through a pipeline 13, a baffle 18 is fixedly arranged on the other side of the machine body 1, a vacuum pump 19 is fixedly arranged above, an air exhaust pipe 35 and an air exhaust pipe 36 are connected above the vacuum pump 19, the vacuum pump 19 penetrates through an air exhaust port 37 through the air exhaust pipe 35 to be connected with the oil storage tank 17, and the baffle 18 plays a role in placing the vacuum pump 19.
Further, the circulation valves 32 are connected with each other through a connecting rod 31, the upper ends of the circulation valves 32 are fixedly provided with a connecting plate 30, a pump oil head 34 is fixedly arranged below the circulation valves 32, the pump oil head 34 is inserted into an oil filling device 33, and the oil filling device 33 is fixed on the placing table 21.
Furthermore, a support bar 24 is fixedly arranged on the placing table top 21, and the support bar 24 passes through the lower flow plate 22 and is supported below the upper flow plate 25.
Further, the inside of the clamping layer 23 clamps the flow valve 32.
Further, an oil outlet switch 15 is fixedly arranged on one side of the lower flow plate 22, a fixed patch 16 is arranged between the oil outlet switch 15 and the lower flow plate 22, and the oil outlet switch 15 is connected with a flow valve 32.
Further, two support rods 24 are fixedly arranged on two sides of the placing table 21, and the support rods 24 pass through the lower circulating plate 22 and the upper circulating plate 25. The support rod 24 is of a hollow structure, the support rod 24 is connected with the oil return opening 40, and oil which cannot be used flows back to the oil storage tank 17 through the support rod 24.
Further, a support leg 14 is fixedly arranged below the machine body 1, and the support leg 14 plays a role of supporting the machine body 1.
Further, an alarm lamp 28 is fixedly arranged outside the control cabinet 4, and when an abnormal condition occurs, the alarm lamp 28 emits red light.
Specifically, clicking the water test switch 7 on the control case 4, the pump 10 flushes the water in the water tank 12 into the oil storage tank 17, turning on the vacuum pump 19, the air exhaust pipe 35 exhausts the internal air and then exhausts the air through the air exhaust pipe 36, so as to ensure the vacuum effect inside the oil storage tank 17, clicking the start button 8, the oil pump 27 sucks the water out of the oil storage tank 17 and then exhausts the water into the upper circulation plate 25, the water enters the lower circulation plate 22 from the upper circulation plate 25 through the support rod 24, turning on the oil outlet switch 15, the water exhausts the water through the oil pumping head 34, the process is a test link, if no problem exists, the oil is poured into the oil storage tank 17, the oil pumping head 34 is inserted into the oil filling device 33, the vacuum oil injection can be completed by repeating the process, and the incomplete oil flows back to the oil storage tank 17 along with the support rod 24.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A side leakage and vacuum oil injection device comprises a machine body (1), a control cabinet (4), a pump (10), a water tank (12), an oil storage tank (17), a vacuum pump (19), a placing table top (21), a clamping layer (23), an oil pump (27), an upper platform (29), a connecting plate (30), a connecting rod (31), an oil filling appliance (33) and an oil pumping head (34), and is characterized in that the upper platform (29) is fixedly arranged above the machine body (1), the oil storage tank (17) is fixedly arranged below the upper platform (29), the oil storage tank (17) and the upper platform (29) are mutually connected through a side baffle (18), the space among the oil storage tank (17), the upper platform (29) and the side baffles (18) at two sides is an internal working space (20), and the upper panel of the oil storage tank (17) is used for placing the table top (21), the oil storage table is characterized in that a flow valve (32) and a clamping layer (23) are fixedly arranged on the placing table top (21), a lower flow plate (22), the clamping layer (23) and an upper flow plate (25) are fixedly arranged above the placing table top (21), two sides of the lower flow plate (22), the clamping layer (23) and the upper flow plate (25) are fixed on a side baffle (18), the flow valve (32) penetrates through the lower flow plate (22), the flow valve (32) is communicated with the lower flow plate (22), a transmission oil pipe (26) is connected above the upper flow plate (25), the transmission oil pipe (26) penetrates through an upper platform (29) and is connected with an oil pump (27), and the oil pump (27) penetrates through an oil through hole (38) in the side face of the oil storage tank (17) through a pipeline (13) and enters the oil storage tank (17).
2. The lateral leakage and vacuum oiling device according to claim 1, wherein a control cabinet (4) and a water tank (12) are fixedly arranged on the lateral side of the machine body (1), a door is hinged to the lateral side of the control cabinet (4), a side door handle (5) is fixedly arranged on the door, a time display (2), a time setting button (3), a vacuum pump switch (6), a water testing switch (7), a starting button (8) and a stopping button (11) are fixedly arranged outside the machine body (1), the time setting button (3) is fixedly arranged on one side of the time display (2), the vacuum pump switch (6), the water testing switch (7), the starting button (8) and the stopping button (11) are fixedly arranged below the time display (2), the control cabinet (4) is connected with a pump machine (10) through an electric wire (9), the pump machine (10) is connected with the water tank (12) through a pipeline (13), the water tank (12) penetrates through a water through hole (39) through a pipeline (13) to be connected with the oil storage tank (17), a baffle (18) is fixedly arranged on the other side of the machine body (1), a vacuum pump (19) is fixedly arranged above the baffle (18), an exhaust pipe (35) and an air release pipe (36) are connected above the vacuum pump (19), and the vacuum pump (19) penetrates through the exhaust hole (37) through the exhaust pipe (35) to be connected with the oil storage tank (17).
3. The side leakage and vacuum oil injection device according to claim 1, wherein the flow valves (32) are connected with each other through a connecting rod (31), a connecting plate (30) is fixedly arranged at the upper ends of the flow valves (32), a pump oil head (34) is fixedly arranged below the flow valves (32), the pump oil head (34) is inserted into an oil filling appliance (33), and the oil filling appliance (33) is fixed on the placing table top (21).
4. The side leakage vacuum oiling device according to claim 1, wherein a support rod (24) is fixedly arranged on the placing table top (21), and the support rod (24) penetrates through the lower circulating plate (22) and is supported below the upper circulating plate (25).
5. The apparatus according to claim 1, wherein the clamping layer (23) internally clamps the flow-through valve (32).
6. The side leakage and vacuum oil injection device according to claim 1, wherein an oil outlet switch (15) is fixedly arranged on one side of the lower circulating plate (22), a fixing patch (16) is arranged between the oil outlet switch (15) and the lower circulating plate (22), and the oil outlet switch (15) is connected with a circulating valve (32).
7. The side leakage and vacuum oil injection device is characterized in that two support rods (24) are fixedly arranged on two sides of the placing table top (21), and the support rods (24) penetrate through the lower circulating plate (22) and the upper circulating plate (25). The support rod (24) is of a hollow structure, and the support rod (24) is connected with the oil return opening (40).
8. The side leakage and vacuum oiling device according to claim 1, wherein a support leg (14) is fixedly arranged below the machine body (1).
9. The side leakage and vacuum oiling device according to claim 2, wherein an alarm lamp (28) is fixedly arranged outside the control cabinet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138310.9A CN110828121A (en) | 2019-11-20 | 2019-11-20 | Side leakage and vacuum oil injection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911138310.9A CN110828121A (en) | 2019-11-20 | 2019-11-20 | Side leakage and vacuum oil injection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110828121A true CN110828121A (en) | 2020-02-21 |
Family
ID=69557006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911138310.9A Pending CN110828121A (en) | 2019-11-20 | 2019-11-20 | Side leakage and vacuum oil injection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110828121A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202996508U (en) * | 2012-12-25 | 2013-06-12 | 南通市肿瘤医院 | Vacuum oiling machine for maintaining bulb tubes |
| CN104361977A (en) * | 2014-11-07 | 2015-02-18 | 重庆红岩电力设备研究所（普通合伙） | Vacuum oil filling machine for high voltage current transformer |
| JP2015054693A (en) * | 2013-09-10 | 2015-03-23 | 歐科企業有限公司 | Oil change device for use in self-service |
| CN204390851U (en) * | 2015-03-11 | 2015-06-10 | 江苏伯乐达变压器有限公司 | Transformer vacuum oil system |
-
2019
- 2019-11-20 CN CN201911138310.9A patent/CN110828121A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202996508U (en) * | 2012-12-25 | 2013-06-12 | 南通市肿瘤医院 | Vacuum oiling machine for maintaining bulb tubes |
| JP2015054693A (en) * | 2013-09-10 | 2015-03-23 | 歐科企業有限公司 | Oil change device for use in self-service |
| CN104361977A (en) * | 2014-11-07 | 2015-02-18 | 重庆红岩电力设备研究所（普通合伙） | Vacuum oil filling machine for high voltage current transformer |
| CN204390851U (en) * | 2015-03-11 | 2015-06-10 | 江苏伯乐达变压器有限公司 | Transformer vacuum oil system |
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Effective date of abandoning: 20231027 |
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