CN217690726U - Lean maintenance device for mutual inductor - Google Patents
Lean maintenance device for mutual inductor Download PDFInfo
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- CN217690726U CN217690726U CN202221173624.XU CN202221173624U CN217690726U CN 217690726 U CN217690726 U CN 217690726U CN 202221173624 U CN202221173624 U CN 202221173624U CN 217690726 U CN217690726 U CN 217690726U
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Abstract
The utility model relates to a mutual inductor lean maintenance device, which comprises a mutual inductor, an oil supplementing pipeline, a degassing pipeline and an inflation pipeline; the visual valve is arranged on an oil sampling port at the lower end of the mutual inductor, and an oil inlet, an oil return port and a switch for controlling the mutual inductor to be communicated with the visual valve are arranged on the visual valve; the degassing port at the upper end of the mutual inductor is connected with a degassing pipeline; the oil supplementing pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with an oil inlet, and the other end of the oil inlet pipeline is connected with an oil tank; one end of the oil return pipeline is connected with the oil return port, and the other end of the oil return pipeline is connected with the oil tank; the inflation pipeline is connected with the oil inlet through an oil inlet pipeline; during oil supplement, oil circulation can be performed on an oil supplement pipeline, and whether bubbles exist in the oil is observed through a visual valve, so that preparation is made for subsequent accurate oil supplement; during degassing, the mode of gas replacement is adopted, and degassing is carried out while gas is inflated, so that hydrogen, methane and acetylene in the mutual inductor are fully ensured to be smoothly discharged, and the operation risk of the mutual inductor is effectively reduced.
Description
Technical Field
The utility model relates to a mutual-inductor technical field, concretely relates to mutual-inductor lean maintenance device.
Background
The oil-immersed transformer takes transformer oil as a heat dissipation medium, and heat generated during operation is conducted to the metal shell by the transformer oil and dissipated. After the mutual inductor is used for a long time, due to frequent oil taking operation, oil in the mutual inductor is reduced, and operation risks are increased; in addition, because the metal expander made of stainless steel alloy (1 Cr18Ni9 Ti) is widely used on the mutual inductor, nickel in the metal expander promotes cyclohexane in oil to be dehydrogenated to generate hydrogen, the content of the hydrogen in the mutual inductor exceeds the standard, and the use risk is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mutual-inductor lean is protected and is supported device to thereby solve traditional mutual-inductor and use the problem that back fluid reduces, hydrogen increases to make the mutual-inductor have the operational risk for a long time.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the lean maintenance device for the mutual inductor comprises the mutual inductor, an oil supplementing pipeline, a degassing pipeline and an inflation pipeline;
a visual valve is arranged on an oil sampling port at the lower end of the mutual inductor, and an oil inlet, an oil return port and a switch for controlling the communication between the mutual inductor and the visual valve are arranged on the visual valve;
the degassing port at the upper end of the mutual inductor is connected with a degassing pipeline; a vacuum pump is arranged on the degassing pipeline;
the oil supplementing pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with the oil inlet, and the other end of the oil inlet pipeline is connected with the oil tank; one end of the oil return pipeline is connected with the oil return port, and the other end of the oil return pipeline is connected with the oil tank;
the gas charging pipeline is mutually connected with the oil inlet through the oil inlet pipeline;
the degassing pipeline is connected with the oil return pipeline through a vacuum loop, and an oil supplementing vacuum solenoid valve is arranged on the vacuum loop.
Furthermore, the oil supplementing pipeline also comprises an oil storage pipeline for storing oil to the oil tank, one end of the oil storage pipeline is connected with the oil tank, and the other end of the oil storage pipeline is connected with an external oil storage container; and the oil storage pipeline is provided with an oil storage electromagnetic valve.
Furthermore, the oil supplementing pipeline also comprises an oil drainage pipeline, one end of the oil drainage pipeline is connected with the oil tank, and the other end of the oil drainage pipeline is connected with an oil drainage container; and an oil discharge electromagnetic valve is arranged on the oil discharge pipeline.
Furthermore, a pressure sensor, an oil inlet electromagnetic valve and a fine filter are arranged on the oil inlet pipeline; the pressure sensor is used for detecting the pressure of an oil inlet pipeline in the oil supplementing process; the fine filter filters impurities in the oil liquid;
and an oil return electromagnetic valve is arranged on the oil return pipeline.
Furthermore, a gas monitoring assembly for monitoring methane and acetylene is arranged on the degassing pipeline; and a vacuum gauge is also arranged on the degassing pipeline.
Furthermore, a hydrogen sensor for detecting the concentration of hydrogen in the return oil is arranged on the oil tank.
Furthermore, one end of the inflation pipeline is provided with a nitrogen tank, and the other end of the inflation pipeline is connected with an oil inlet pipeline; a high-pressure reducing valve, a one-way valve and a high-frequency electromagnetic valve are sequentially arranged on a pipeline between the nitrogen tank and the oil inlet pipeline.
The utility model has the advantages that:
the lean maintenance device for the mutual inductor comprises the mutual inductor, an oil supplementing pipeline, a degassing pipeline and an inflation pipeline; a visual valve is arranged on an oil sampling port at the lower end of the mutual inductor, and an oil inlet, an oil return port and a switch for controlling the mutual inductor to be communicated with the visual valve are arranged on the visual valve; the degassing port at the upper end of the mutual inductor is connected with a degassing pipeline; a vacuum pump is arranged on the degassing pipeline; the oil supplementing pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with the oil inlet, and the other end of the oil inlet pipeline is connected with the oil tank; one end of the oil return pipeline is connected with the oil return port, and the other end of the oil return pipeline is connected with the oil tank; the inflation pipeline is mutually connected with the oil inlet through the oil inlet pipeline; the degassing pipeline is connected with the oil return pipeline through a vacuum loop, and an oil supplementing vacuum solenoid valve is arranged on the vacuum loop. During oil supplement, oil circulation can be performed on an oil supplement pipeline, and whether bubbles exist in the oil is observed through a visual valve, so that preparation is made for subsequent accurate oil supplement; during degassing, the mode of gas replacement is adopted, gas is inflated while degassing is carried out, hydrogen, methane and acetylene in the mutual inductor are fully guaranteed to be smoothly discharged, maintenance of the mutual inductor is realized, and the operation risk of the mutual inductor is effectively reduced
Drawings
Fig. 1 is a schematic diagram of the utility model.
Names corresponding to the marks in the figure:
1. degassing joint, 2, gas monitoring component, 3, oil storage container, 4, oil supplementing vacuum solenoid valve, 5, oil storage solenoid valve, 6, high frequency solenoid valve, 7, check valve, 8, high pressure reducing valve, 9, nitrogen tank, 10, hydrogen sensor, 11, oil return solenoid valve, 12, pressure sensor, 13, vacuum pump, 14, vacuum gauge, 15, degassing vacuum solenoid valve, 16 mutual inductor, 17, visual valve, 18, fine filter, 19, oil inlet solenoid valve, 20, oil pump, 21, oil discharge solenoid valve, 22, oil discharge container, 23, oil return, 24, oil inlet, 25, oil tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
The embodiment of the utility model provides a:
as shown in figure 1, the lean nursing device for the mutual inductor comprises a mutual inductor 16, an oil supplementing pipeline, a degassing pipeline and an aeration pipeline.
A visual valve 17 is arranged on an oil sampling port at the lower end of the mutual inductor 16, and an oil inlet 24, an oil return port 23 and a switch for controlling the mutual inductor 16 to be communicated with the visual valve 17 are arranged on the visual valve 17; specifically, the left end of the visual valve 17 is rotatably arranged on an oil sampling port at the lower end of the mutual inductor 16; the middle part is provided with a visual cavity which is communicated with the oil sampling port, the oil inlet 24 and the oil return port 23 are symmetrically arranged on the visual cavity, in the embodiment, the oil return port 23 is arranged upwards, and the oil inlet 24 is arranged downwards; the oil inlet 24 and the oil return port 23 are communicated with the visible cavity; the right-hand member in visual chamber slides and is equipped with an ejector pin, and the one end of ejector pin is located visual intracavity portion, and the other end is located visual intracavity portion, and when the ejector pin removed left, the left end of ejector pin will the position that visual intracavity portion of shutoff and oil sampling mouth are connected for mutual wall in mutual-inductor 16 and visual chamber, when the ejector pin slided right, mutual-inductor 16 will communicate with visual chamber again.
The oil supplementing pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with an oil inlet 24, the other end of the oil inlet pipeline is connected with an oil tank 25 for supplementing oil, a pressure sensor 12 is arranged on the oil inlet pipeline, and the pressure sensor 12 is used for detecting the pressure change of the oil inlet pipeline in the oil supplementing process; an oil inlet electromagnetic valve for controlling the on-off of the oil inlet pipeline is arranged on the oil inlet pipeline; the oil inlet pipeline is also provided with a fine filter 18 for filtering oil impurities. One end of the return line is connected to the return opening 23, the other end being likewise connected to the oil tank 25.
The oil supplementing pipeline further comprises an oil storage pipeline used for storing oil in the oil tank 25, one end of the oil storage pipeline is connected with the oil tank 25, the other end of the oil storage pipeline is connected with the external oil storage container 3, the oil storage electromagnetic valve 5 is arranged on the oil storage pipeline, the oil pump 20 is arranged on the oil tank 25, and during oil storage, oil in the external oil storage container 3 can be pumped into the oil tank 25 through the oil storage pipeline to prepare for an oil supplementing process.
The oil supplementing pipeline also comprises an oil discharging pipeline, one end of the oil discharging pipeline is connected with the oil tank 25, and the other end of the oil discharging pipeline is connected with the oil discharging container 22; the oil drain pipeline is provided with an oil drain electromagnetic valve 21 and is used for discharging residual oil in the oil tank 25 after oil supplement is finished.
The oil tank 25 is provided with a hydrogen sensor 10 for detecting the concentration of hydrogen in the return oil.
The degassing port at the upper end of the transformer 16 is connected to a degassing line, and in particular, the degassing port is provided with a degassing connector 1 for degassing, and the degassing connector 1 only serves to connect the transformer 16 and the degassing line. A gas monitoring component 2 for monitoring methane and acetylene is arranged on the degassing pipeline, and the gas monitoring component 2 is a methane and acetylene gas density monitor in the embodiment; the degassing pipeline is connected with the oil return pipeline through a vacuum loop, and an oil supplementing vacuum solenoid valve 4 is arranged on the vacuum loop.
One end of the inflation pipeline is connected with a nitrogen tank 9, the other end of the inflation pipeline is connected with the oil inlet pipeline, a high-pressure reducing valve 8, a one-way valve 7 and a high-frequency electromagnetic valve 6 are sequentially arranged on the pipeline from the nitrogen tank 9 to the oil inlet pipeline, and the inflation pipeline is connected with the oil inlet 24 through the oil inlet pipeline; the high-frequency electromagnetic valve 6 is used for controlling the on-off of the air charging pipeline.
The working principle is as follows:
oil supplementing procedure
Sliding a top rod in a visual valve 17 to the right to enable a mutual inductor 16 and a visual cavity to be communicated with each other, enabling oil in the mutual inductor 16 to flow into the visual cavity, sliding the top rod to the left to disconnect the mutual inductor 16 and the visual cavity when the oil in the visual cavity occupies 1/2 of the volume of the visual cavity, ensuring that no gas exists at the bottom of the mutual inductor 16 any more, ensuring the accuracy of subsequent oil supplement, then opening an oil supplement vacuum electromagnetic valve 4, starting a vacuum pump 13, and performing vacuumizing operation on an oil inlet pipeline and an oil return pipeline to prepare for an oil supplement process; after the vacuumizing is finished, the oil storage electromagnetic valve 5 is opened and the oil pump 20 is started to carry out an oil storage process, and at the moment, oil in the external oil storage container 3 is pumped into the oil tank 25 to prepare for an oil supplementing process; then, the oil pump 20, the oil inlet electromagnetic valve 19 and the oil return port electromagnetic valve 11 are started to perform an oil circulation process, oil is filled in the oil inlet pipeline, the oil outlet pipeline and the visual cavity, so that the influence of gas on a subsequent oil supplementing process is avoided, when the visual cavity shows that the oil is full and bubbles are not observed any more, the oil circulation is stopped, the oil supplementing process is started, the oil inlet electromagnetic valve 19 is opened during oil supplementing, the oil pump 20 is started to supplement oil, and the oil supplementing is stopped when the oil level in the mutual inductor 16 reaches a standard, in the process, if the pressure sensor 12 monitors that the pressure in the oil inlet pipeline is too high, the oil supplementing can be automatically stopped, and a worker can check the oil inlet pipeline through a channel between the mutual inductor 16 and the visual valve 17, so that the oil supplementing can be performed smoothly. After the oil supplement is finished, the oil discharge electromagnetic valve 21 is opened to discharge the residual oil in the oil tank 25, the oil inlet pipeline and the oil return pipeline into the oil discharge container 22.
Inflation and degassing step
Pulling a top rod on a visual valve 17 to the right to open the communication between the mutual inductor 16 and the visual cavity, simultaneously opening an oil return port electromagnetic valve 11 and an oil pump 20, discharging a small amount of oil from the mutual inductor 16, avoiding the oil from overflowing from a degassing port of the mutual inductor 16 at the degassing moment, pushing the top rod to the left, performing a vacuumizing process at the moment, opening a degassing vacuum electromagnetic valve 15, starting a vacuum pump 13 to vacuumize, discharging gas in a degassing pipeline, and stopping vacuumizing when a vacuum gauge 14 displays that the vacuumizing process reaches a certain vacuum degree; the ejector rod is pulled rightwards, the high-pressure reducing valve 8 and the high-frequency electromagnetic valve 6 are opened, nitrogen gas flows through the inflation pipeline and a part of the oil inlet pipeline and finally flows into the mutual inductor 16 from the visual cavity, in the inflation process, hydrogen, methane and acetylene in the mutual inductor 16 are discharged from the degassing pipeline connected to the upper end of the mutual inductor 16, the methane and acetylene density monitors monitor the concentration of methane and acetylene in the degassing gas in real time, and the concentration of the methane and the acetylene is zero. And stopping degassing, opening the oil return port electromagnetic valve 11 at the moment, enabling a small amount of oil in the mutual inductor 16 to flow into the oil tank 25 through an oil return pipeline, detecting the concentration of hydrogen in the oil by a hydrogen sensor 10 arranged on the oil tank 25, and finishing degassing when the concentration is zero.
Claims (7)
1. Lean maintenance device of mutual-inductor, its characterized in that: the device comprises a mutual inductor, an oil supplementing pipeline, a degassing pipeline and an inflation pipeline;
a visual valve is arranged on an oil sampling port at the lower end of the mutual inductor, and an oil inlet, an oil return port and a switch for controlling the communication between the mutual inductor and the visual valve are arranged on the visual valve;
the degassing port at the upper end of the mutual inductor is connected with a degassing pipeline; a vacuum pump is arranged on the degassing pipeline;
the oil supplementing pipeline comprises an oil inlet pipeline and an oil return pipeline, one end of the oil inlet pipeline is connected with the oil inlet, and the other end of the oil inlet pipeline is connected with the oil tank; one end of the oil return pipeline is connected with the oil return port, and the other end of the oil return pipeline is connected with the oil tank;
the gas charging pipeline is mutually connected with the oil inlet through the oil inlet pipeline;
the degassing pipeline is connected with the oil return pipeline through a vacuum loop, and an oil supplementing vacuum solenoid valve is arranged on the vacuum loop.
2. The lean mutual inductor maintenance device according to claim 1, wherein: the oil supplementing pipeline also comprises an oil storage pipeline for storing oil to the oil tank, one end of the oil storage pipeline is connected with the oil tank, and the other end of the oil storage pipeline is connected with an external oil storage container; and the oil storage pipeline is provided with an oil storage electromagnetic valve.
3. The lean mutual inductor maintenance device according to claim 1, wherein: the oil supplementing pipeline also comprises an oil discharging pipeline, one end of the oil discharging pipeline is connected with the oil tank, and the other end of the oil discharging pipeline is connected with an oil discharging container; and an oil drain electromagnetic valve is arranged on the oil drain pipeline.
4. The lean mutual inductor maintenance device according to claim 1, wherein: the oil inlet pipeline is provided with a pressure sensor, an oil inlet electromagnetic valve and a fine filter; the pressure sensor is used for detecting the pressure of an oil inlet pipeline in the oil supplementing process; the fine filter filters impurities in the oil liquid;
and an oil return electromagnetic valve is arranged on the oil return pipeline.
5. The lean mutual inductor maintenance device according to claim 1, wherein: the degassing pipeline is also provided with a gas monitoring assembly for monitoring methane and acetylene;
and a vacuum gauge is also arranged on the degassing pipeline.
6. The lean mutual inductor maintenance device according to claim 1, wherein: and a hydrogen sensor for detecting the concentration of hydrogen in the return oil is arranged on the oil tank.
7. The lean mutual inductor maintenance device according to claim 1, wherein: one end of the inflation pipeline is provided with a nitrogen tank, and the other end of the inflation pipeline is connected with the oil inlet pipeline; and a high-pressure reducing valve, a one-way valve and a high-frequency electromagnetic valve are sequentially arranged on a pipeline between the nitrogen tank and the oil inlet pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173624.XU CN217690726U (en) | 2022-05-16 | 2022-05-16 | Lean maintenance device for mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221173624.XU CN217690726U (en) | 2022-05-16 | 2022-05-16 | Lean maintenance device for mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217690726U true CN217690726U (en) | 2022-10-28 |
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ID=83738804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221173624.XU Active CN217690726U (en) | 2022-05-16 | 2022-05-16 | Lean maintenance device for mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217690726U (en) |
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2022
- 2022-05-16 CN CN202221173624.XU patent/CN217690726U/en active Active
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