Oil filtering system of transformer

Abstract

The utility model provides an oil filtering system of a transformer, which can filter insulating oil of the transformer. A crude oil tank remote transmission liquid level meter, a crude oil tank high liquid level switch, a crude oil tank low liquid level switch and a crude oil tank respirator are arranged on a tank body of the crude oil tank, a crude oil tank oil outlet valve is arranged on an oil outlet pipe of the crude oil tank, and a crude oil tank oil inlet valve is arranged on an oil inlet pipe of the crude oil tank; a tank body of the clean oil tank is provided with a clean oil tank remote liquid level meter, a clean oil tank high liquid level switch, a clean oil tank low liquid level switch and a clean oil tank respirator, an oil outlet pipe of the clean oil tank is provided with a clean oil tank oil outlet valve, and an oil inlet pipe of the clean oil tank is provided with a clean oil tank oil inlet valve; an oil outlet pipe of the vacuum oil filter is connected with an oil inlet pipe of the crude oil tank and an oil inlet pipe of the clean oil tank, an oil inlet pipe of the vacuum oil filter is connected with an oil outlet pipe of the crude oil tank and an oil outlet pipe of the clean oil tank, and an oil filter oil outlet valve is arranged on the oil outlet pipe of the vacuum oil filter. A front oil filter oil inlet valve, a flow switch, a coarse filter, a screw pump, a check valve and a rear oil filter oil inlet valve are sequentially arranged on an oil inlet pipe of the vacuum oil filter.

Description

Technical Field

[0001] The utility model relates to a transformer oil filtering system, which is mainly used for filtering transformer insulating oil. Background Art

[0002] In order to ensure the normal working state of transformer oil, the transformer oil tank is filled with corresponding insulating oil. For transformers working under 35KV and above, the medium requirements for oil are relatively high, especially for impurities, moisture and gas infiltrating into oil. If the above substances are mixed into transformer oil, it is easy to break through the oil, causing the transformer to fail to work normally, or even the transformer coil to burn. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a transformer oil filtering system with a reasonable structural design, which can filter the transformer insulating oil.

[0004] The technical solution adopted by the utility model to solve the above problems is: a transformer oil filtering system, characterized in that: it includes a crude oil tank, a clean oil tank and a vacuum oil filter; the tank body of the crude oil tank is provided with a crude oil tank remote transmission liquid level gauge, a crude oil tank high liquid level switch, a crude oil tank low liquid level switch and a crude oil tank respirator, the oil outlet pipe of the crude oil tank is provided with a crude oil tank oil outlet valve, and the oil inlet pipe of the crude oil tank is provided with a crude oil tank oil inlet valve; the tank body of the clean oil tank is provided with a clean oil tank remote transmission liquid level gauge, a clean oil tank high liquid level switch, a clean oil tank low liquid level switch and a clean oil tank An oil tank breather, an oil clean tank oil outlet valve is arranged on the oil outlet pipe of the clean oil tank, and an oil clean tank oil inlet valve is arranged on the oil inlet pipe of the clean oil tank; the oil outlet pipe of the vacuum oil filter is connected with the oil inlet pipe of the crude oil tank and the oil clean tank, the oil inlet pipe of the vacuum oil filter is connected with the oil outlet pipe of the crude oil tank and the oil outlet pipe of the clean oil tank, an oil filter oil outlet valve is arranged on the oil outlet pipe of the vacuum oil filter, and a front oil filter oil inlet valve, a flow switch, a coarse filter, a screw pump, a check valve and a rear oil filter oil inlet valve are arranged in sequence on the oil inlet pipe of the vacuum oil filter.

[0005] The crude oil tank respirator of the utility model is provided with a crude oil tank moisture absorber.

[0006] The crude oil tank body of the utility model is provided with a crude oil tank display.

[0007] The oil purifier tank respirator of the utility model is provided with an oil purifier tank moisture absorber.

[0008] The tank body of the oil purifier tank of the utility model is provided with an oil purifier tank display.

[0009] The crude oil tank oil outlet valve, crude oil tank oil inlet valve, clean oil tank oil outlet valve, clean oil tank oil inlet valve, oil filter oil outlet valve, front oil filter oil inlet valve and rear oil filter oil inlet valve described in the utility model are all ball valves.

[0010] Compared with the prior art, the utility model has the following advantages and effects:

[0011] 1. Set up a crude oil tank and a clean oil tank, and use a vacuum oil filter to circulate repeatedly. The crude oil tank is pumped into the vacuum oil filter, and the vacuum oil filter filters out and enters the clean oil tank. If the oil in the clean oil tank still does not meet the standards, the clean oil tank is self-circulated and filtered again through the vacuum oil filter until the oil meets the requirements, so as to filter the transformer insulating oil and meet the high quality requirements of the insulating oil;

[0012] 2. Automatically monitor the liquid levels of crude oil tanks and clean oil tanks to ensure that oil products are stored within a safe range to prevent overfilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0015] The utility model comprises a crude oil tank D10, an oil purification tank C10 and a vacuum oil filter E10.

[0016] Insulating oil is injected into the crude oil tank D10, and the tank body of the crude oil tank D10 is provided with:

[0017] (1) Crude oil tank remote level gauge D10.3, 4-20Am transmission signal, used for level transmission during oil filling to prevent overfilling;

[0018] (2) The crude oil tank high liquid level switch D10.4 and the crude oil tank low liquid level switch D10.5 are used to control the high and low liquid levels of the crude oil tank D10. This liquid level signal is used to indicate that the oil in the crude oil tank D10 has been fully circulated;

[0019] (3) Crude oil tank respirator D10.7: This equipment is used to ensure the pressure inside the crude oil tank D10. After the crude oil is pumped out, the pressure inside the crude oil tank D10 is too low. A certain amount of gas is added through the crude oil tank respirator D10.7 to ensure the internal and external pressures of the tank. The crude oil tank respirator D10.7 is equipped with a crude oil tank dehumidifier D10.6, which is mainly used to filter moisture in the air.

[0020] (4) Crude oil tank display D10.8, used to display information in the system.

[0021] A crude oil tank outlet valve D10.1 is provided on the oil outlet pipe of the crude oil tank D10, and a crude oil tank inlet valve D10.2 is provided on the oil inlet pipe of the crude oil tank D10. The crude oil tank outlet valve D10.1 and the crude oil tank inlet valve D10.2 are control valves for the inlet and outlet of the crude oil tank D10.

[0022] The tank body of the clean oil tank C10 is equipped with:

[0023] (1) Clean oil tank remote level gauge C10.3, 4-20Am transmission signal, used for level transmission during oil filling to prevent overfilling;

[0024] (2) The high liquid level switch C10.4 and the low liquid level switch C10.5 of the clean oil tank are used to control the high and low liquid levels of the clean oil tank C10. This liquid level signal is used to indicate the storage amount of oil in the clean oil tank C10;

[0025] (3) Oil clean tank respirator C10.7. This equipment is used to ensure the pressure inside the oil clean tank C10. After the clean oil is pumped out, the pressure inside the cavity of the oil clean tank C10 is too low. A certain amount of gas is added through the oil clean tank respirator C10.7 to ensure the internal and external pressures of the tank. The oil clean tank respirator C10.7 is equipped with an oil clean tank dehumidifier C10.6. The main function of the oil clean tank dehumidifier C10.6 is to filter moisture in the air.

[0026] (4) Clean oil tank display C10.8, used to display information in the system.

[0027] An oil clean tank oil outlet valve C10.1 is provided on the oil outlet pipe of the oil clean tank C10, and an oil clean tank oil inlet valve C10.2 is provided on the oil inlet pipe of the oil clean tank C10. The oil clean tank oil outlet valve C10.1 and the oil clean tank oil inlet valve C10.2 are control valves for the oil inlet and outlet of the oil clean tank C10.

[0028] The vacuum oil filter E10 has online monitoring and online detection functions. The oil outlet pipe of the vacuum oil filter E10 is connected to the oil inlet pipe of the crude oil tank D10 and the oil inlet pipe of the clean oil tank C10, and the oil inlet pipe of the vacuum oil filter E10 is connected to the oil outlet pipe of the crude oil tank D10 and the oil outlet pipe of the clean oil tank C10.

[0029] An oil filter outlet valve E10.7 is provided on the oil outlet pipe of the vacuum oil filter E10. A front oil filter oil inlet valve E10.1, a flow switch E10.2, a coarse filter E10.3, a screw pump E10.4, a check valve E10.5 and a rear oil filter oil inlet valve E10.6 are provided on the oil inlet pipe of the vacuum oil filter E10 in sequence. The oil enters from the front oil filter oil inlet valve E10.1, passes through the flow switch E10.2 and enters the coarse filter E10.3. After coarse filtration, the impurities with larger particles in the oil are filtered out. A screw pump E10.4 is provided at the front end of the coarse filter E10.3. The screw pump E10.4 provides power for the system oil filtration, and a check valve E10.5 is provided at the front end of the screw pump E10.4. The pressure is relatively high during filtration in the vacuum oil filter, and a check valve E10.5 is provided to prevent the oil from flowing back.

[0030] The above-mentioned oil inlet valves and oil outlet valves are all ball valves.

[0031] The oil in the crude oil tank D10 passes through the crude oil tank outlet valve D10.1, and then passes through the front oil filter oil inlet valve E10.1, flow switch E10.2, coarse filter E10.3, screw pump E10.4, check valve E10.5, and rear oil filter oil inlet valve E10.6 to enter the vacuum oil filter E10. After the vacuum oil filter E10 filters the oil, it can directly enter the clean oil tank C10 through the clean oil tank oil inlet valve C10.2. This pipeline is the main pipeline for filtering oil; it can also enter the crude oil tank D10 through the crude oil tank oil inlet valve D10.2. This line is to retain the self-circulation function of the crude oil tank D10. An online detection part is set at the end of the oil filter E10. If it meets the standard, it will be directly stored in the clean oil tank C10. If it does not meet the standard, the oil in the clean oil tank C10 will enter the oil filter E10 again for another self-circulation until it meets the standard.

[0032] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A transformer oil filter system, characterized in that: It includes a crude oil tank, a clean oil tank and a vacuum oil filter; the crude oil tank is provided with a remote level gauge for the crude oil tank, a high level switch for the crude oil tank, a low level switch for the crude oil tank and a respirator for the crude oil tank on the tank body; the crude oil tank is provided with an oil outlet valve for the crude oil tank on the oil outlet pipe, and a crude oil tank inlet valve on the oil inlet pipe; the clean oil tank is provided with a remote level gauge for the clean oil tank, a high level switch for the clean oil tank, a low level switch for the clean oil tank and a respirator for the clean oil tank on the tank body; the clean oil tank is provided with a clean oil outlet valve on the oil outlet pipe, and a clean oil outlet valve on the oil outlet pipe. The oil outlet valve of the tank is arranged on the oil inlet pipe of the clean oil tank, and the oil inlet valve of the clean oil tank is arranged on the oil inlet pipe of the clean oil tank; the oil outlet pipe of the vacuum oil filter is connected with the oil inlet pipe of the crude oil tank and the oil inlet pipe of the clean oil tank, the oil inlet pipe of the vacuum oil filter is connected with the oil outlet pipe of the crude oil tank and the oil outlet pipe of the clean oil tank, and the oil outlet valve of the vacuum oil filter is arranged on the oil outlet pipe of the vacuum oil filter, and the front oil filter oil inlet valve, flow switch, coarse filter, screw pump, check valve and rear oil filter oil inlet valve are arranged in sequence on the oil inlet pipe of the vacuum oil filter.

2. The transformer oil filter system according to claim 1, characterized in that: The crude oil tank respirator is provided with a crude oil tank moisture absorber.

3. The transformer oil filter system according to claim 1, characterized in that: A crude oil tank display is arranged on the tank body of the crude oil tank.

4. The transformer oil filter system according to claim 1, characterized in that: The oil purifier tank respirator is provided with an oil purifier tank moisture absorber.

5. The transformer oil filter system according to claim 1, characterized in that: An oil clean tank display is arranged on the tank body of the oil clean tank.

6. The transformer oil filter system according to claim 1, characterized in that: The crude oil tank oil outlet valve, crude oil tank oil inlet valve, clean oil tank oil outlet valve, clean oil tank oil inlet valve, oil filter oil outlet valve, front oil filter oil inlet valve and rear oil filter oil inlet valve are all ball valves.

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