CN216528338U - Online oil filtering and changing system of transformer - Google Patents
Online oil filtering and changing system of transformer Download PDFInfo
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- CN216528338U CN216528338U CN202123236876.0U CN202123236876U CN216528338U CN 216528338 U CN216528338 U CN 216528338U CN 202123236876 U CN202123236876 U CN 202123236876U CN 216528338 U CN216528338 U CN 216528338U
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Abstract
The utility model discloses an online oil filtering and changing system of a transformer, which comprises an oil outlet pipe, a pump set, an electric control throttle valve A, a filtering assembly, an electric control throttle valve B and an oil inlet pipe which are connected in sequence, wherein an electric control stop valve is arranged on the oil outlet pipe; the middle section of the oil inlet pipe is also connected to an air bag through an air conveying pipe provided with an electric control throttle valve C, the oil outlet pipe is connected to a filling tank between the pump unit and the electric control stop valve through a conveying pipe, and the position between the outlet of the pump unit and the electric control throttle valve A is connected to a recovery tank through a return pipe; and the delivery pipe and the return pipe are respectively provided with an electric control throttle valve D and an electric control throttle valve E. The utility model can filter the transformer without stopping the machine, the waste oil is pumped into the recovery tank through the pump set in the oil changing process through the electric control throttle valve E, the inert gas is filled into the transformer, the external air can be prevented from being introduced, impurities, moisture or oxygen can be prevented from entering, the equipment is damaged, the pressurized gas is matched with the pump set to quickly discharge the waste oil, and the oil changing time is greatly reduced.
Description
Technical Field
The utility model relates to the technical field of power transformation equipment, in particular to an online oil filtering and changing system of a transformer.
Background
The oil-cooled transformer needs to be cooled by injecting transformer oil into the transformer, but after a period of time, impurities, moisture and the like can be mixed in the transformer oil, the transformer oil needs to be filtered or replaced, if all the oil is pumped out and filtered, the transformer can only be stopped for treatment, but the transformer is stopped to cause the influence of large-area power failure. And need take out oil in the change process, the difficult outside air that introduces, impurity, moisture and oxygen wherein can cause the damage to equipment is inside, and the change time overlength simultaneously can cause equipment temperature to can not obtain timely reduction if not shut down to cause equipment damage, so change and generally can only shut down and go on.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide an online oil filtering and changing system for a transformer, so as to solve the technical problems in the background art.
The technical scheme of the utility model is as follows:
an online oil filtering and changing system of a transformer comprises an oil outlet pipe, a pump group, an electric control throttle valve A, a filter assembly, an electric control throttle valve B and an oil inlet pipe which are connected in sequence, wherein an electric control stop valve is arranged on the oil outlet pipe; the middle section of the oil inlet pipe is also connected to an air bag through an air conveying pipe provided with an electric control throttle valve C, the oil outlet pipe is connected to a filling tank between the pump unit and the electric control stop valve through a conveying pipe, and the position between the outlet of the pump unit and the electric control throttle valve A is connected to a recovery tank through a return pipe; and the delivery pipe and the return pipe are respectively provided with an electric control throttle valve D and an electric control throttle valve E.
Furthermore, a quick joint or a threaded joint is installed at the head end of the oil outlet pipe.
Furthermore, the filling tank and the recovery tank are integrated into a whole, and the filling tank and the recovery tank are a double-layer tank with two independent compartments.
Furthermore, the electric control stop valve and the electric control throttle valve D are integrated into a two-position three-way electromagnetic valve A, the electric control throttle valve A and the electric control throttle valve E are integrated into a two-position three-way electromagnetic valve B, and the electric control throttle valve B and the electric control throttle valve C are integrated into a two-position three-way electromagnetic valve C.
The filling head is composed of an insertion pipe and an exhaust valve at the top, an independent liquid inlet channel and an independent exhaust channel are separated from the insertion pipe, the liquid inlet channel is connected with the tail end of the oil outlet pipe, and the exhaust channel is connected with the exhaust valve.
Further, the filtering assembly comprises an impurity filter and an oil-water separator.
The utility model has the advantages that:
the utility model can filter and change oil to the transformer under the premise of not shutting down, and can not introduce the outside air in the oil changing process, pump the waste oil into the recovery tank through the electronic control throttle valve E through the pump set extraction, fill the transformer with inert gas, can avoid introducing the outside air, cause impurity, moisture or oxygen to enter, cause the damage to the apparatus, and the pressurized gas cooperates with the pump set and can discharge the waste oil fast, greatly reduce the oil changing time, realize the change without shutting down.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a schematic view of a second embodiment of the present invention;
fig. 3 is a schematic view of the fill head structure.
In the figure: 1-oil outlet pipe, 11-electric control stop valve, 2-pump set, 21-electric control throttle valve A, 3-filter component, 31-impurity filter, 32-oil-water separator, 33-electric control throttle valve B, 4-air bag, 41-air pipe, 42-electric control throttle valve C, 5-oil inlet pipe, 51-filling head, 511-liquid inlet pipe, 512-air exhaust pipe, 513-exhaust valve, 6-filling tank, 61-delivery pipe, 61-electric control throttle valve D, 7-recovery tank, 71-return pipe, 72-electric control throttle valve E, 8-quick joint, 9-two-position three-way electromagnetic valve A, 91-two-position three-way electromagnetic valve B, 92-two-position three-way electromagnetic valve C.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-3:
an online oil filtering and changing system of a transformer comprises an oil outlet pipe 1, a pump group 2, an electric control throttle valve A21, a filter assembly 3, an electric control throttle valve B33 and an oil inlet pipe 5 which are connected in sequence, wherein an electric control stop valve 11 is arranged on the oil outlet pipe 1; the middle section of the oil inlet pipe 5 is also connected to the air bag 4 through an air conveying pipe 41 provided with an electric control throttle valve C42, the oil outlet pipe 1 is connected to the filling tank 6 between the pump unit 2 and the electric control stop valve 11 through a conveying pipe 61, and the part between the outlet of the pump unit 2 and the electric control throttle valve A21 is connected to the recovery tank 7 through a return pipe 71; the delivery pipe 61 and the return pipe 71 are respectively provided with an electrically controlled throttle valve D61 and an electrically controlled throttle valve E72.
The working principle is as follows:
when the circulating filtration is carried out, the electric control stop valve 11, the electric control throttle valve A21 and the electric control throttle valve B33 are opened, the electric control throttle valve C42, the electric control throttle valve D61 and the electric control throttle valve E72 are all closed, the pump group 2 is opened, so that hydraulic oil passes through the oil outlet pipe 1 and the pump group 2 from the outlet at the bottom of the transformer and then is treated through the filter assembly 3 (the filter assembly 3 generally comprises the impurity filter 31 and the oil-water separator 32), and then returns to the transformer to finish the circulating filtration process, and the filter process is not stopped.
When oil change is carried out, the oil change is carried out in the electricity consumption low peak period, firstly, the electric control stop valve 11, the electric control throttle valve C42 and the electric control throttle valve E72 are opened during oil discharge, the electric control throttle valve A21, the electric control throttle valve B33 and the electric control throttle valve D61 are closed, the oil change process is carried out in a sealed mode, inert gas, nitrogen or helium can be stored in the air bag 4 and then is injected into the transformer through the electric control throttle valve C42 and the oil inlet pipe 5, meanwhile, waste oil is pumped into the recovery tank 7 through the pump set 2 and the electric control throttle valve E72, inert gas is filled into the transformer, the introduction of external air and the entering of impurities, moisture or oxygen and the damage to equipment can be avoided, and the pressurized gas is matched with the pump set 2 to quickly discharge the waste oil.
After the waste oil is discharged, the electric control stop valve 11, the electric control throttle valve E72 and the electric control throttle valve C42 are closed, the electric control throttle valve A21, the electric control throttle valve B33 and the electric control throttle valve D61 are opened, hydraulic oil in the filling tank 6 sequentially passes through the electric control throttle valve D61, the pump group 2, the electric control throttle valve A21, the filter component 3, the electric control throttle valve B33 and the oil inlet pipe 5 and is filled into a transformer, the whole process is very short, and the replacement without shutdown can be realized.
In order to be connected with an oil discharge port of the transformer conveniently, a quick connector 8 or a threaded connector is installed at the head end of the oil outlet pipe 1, the filling tank 6 and the recovery tank 7 can be made into a whole, and the double-layer tank with two independent compartments is convenient to transport.
Because inert gas in the transformer needs to be synchronously discharged when new hydraulic oil is injected, a filling head 51 or a small-diameter pipe can be adopted, the filling head 51 consists of an insertion pipe and a top exhaust valve 513, an independent liquid inlet passage 511 and an independent exhaust passage 512 are separated from the inside of the insertion pipe, the liquid inlet passage 511 is connected with the tail end of the oil outlet pipe 1, the exhaust passage 512 is connected with the exhaust valve 513, the insertion pipe is inserted into the top filling port of the transformer, the top filling port is sealed, and then the exhaust valve 513 is closed when other procedures are carried out.
In view of facilitating the automatic control design, the electrically controlled stop valve 11 and the electrically controlled throttle valve D61 are integrated into a two-position three-way solenoid valve a9, the electrically controlled throttle valve a21 and the electrically controlled throttle valve E72 are integrated into a two-position three-way solenoid valve B91, and the electrically controlled throttle valve B33 and the electrically controlled throttle valve C42 are integrated into a two-position three-way solenoid valve C92.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.
Claims (6)
1. The utility model provides an online oil strain of transformer system of changing oil which characterized in that: the automatic filter comprises an oil outlet pipe, a pump group, an electric control throttle valve A, a filter assembly, an electric control throttle valve B and an oil inlet pipe which are connected in sequence, wherein an electric control stop valve is arranged on the oil outlet pipe; the middle section of the oil inlet pipe is also connected to an air bag through an air conveying pipe provided with an electric control throttle valve C, the oil outlet pipe is connected to a filling tank between the pump unit and the electric control stop valve through a conveying pipe, and the position between the outlet of the pump unit and the electric control throttle valve A is connected to a recovery tank through a return pipe; and the delivery pipe and the return pipe are respectively provided with an electric control throttle valve D and an electric control throttle valve E.
2. The online oil filtering and changing system of the transformer according to claim 1, characterized in that: the head end of the oil outlet pipe is provided with a quick joint or a threaded joint.
3. The online oil filtering and changing system of the transformer according to claim 1, characterized in that: the filling tank and the recovery tank are integrated into a whole, and the filling tank and the recovery tank are a double-layer tank with two independent compartments.
4. The transformer on-line oil filtering and changing system according to any one of claims 1 to 3, characterized in that: the electric control stop valve and the electric control throttle valve D are integrated into a two-position three-way electromagnetic valve A, the electric control throttle valve A and the electric control throttle valve E are integrated into a two-position three-way electromagnetic valve B, and the electric control throttle valve B and the electric control throttle valve C are integrated into a two-position three-way electromagnetic valve C.
5. The on-line oil filtering and replacing system of the transformer according to any one of claims 1 to 3, characterized in that: the filling head is composed of an insertion pipe and an exhaust valve at the top, an independent liquid inlet channel and an independent exhaust channel are separated from the insertion pipe, the liquid inlet channel is connected with the tail end of the oil outlet pipe, and the exhaust channel is connected with the exhaust valve.
6. The online oil filtering and changing system of the transformer according to claim 1, characterized in that: the filtering component comprises an impurity filter and an oil-water separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236876.0U CN216528338U (en) | 2021-12-22 | 2021-12-22 | Online oil filtering and changing system of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123236876.0U CN216528338U (en) | 2021-12-22 | 2021-12-22 | Online oil filtering and changing system of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528338U true CN216528338U (en) | 2022-05-13 |
Family
ID=81502479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123236876.0U Active CN216528338U (en) | 2021-12-22 | 2021-12-22 | Online oil filtering and changing system of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528338U (en) |
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2021
- 2021-12-22 CN CN202123236876.0U patent/CN216528338U/en active Active
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