Oil-water separation device for transformer

Abstract

The utility model discloses an oil-water separation device for a transformer. During daily operation of a transformer substation, rainwater enters an accident oil pool in rainy days. The device comprises a deslagging and filtering system, a vacuum system and a multi-stage filtering system, the deslagging and filtering system comprises a primary filter, and an oil inlet valve is arranged on the primary filter; an oil outlet of the primary filter is connected to a vacuum system through a heater; the vacuum system comprises a vacuum separator; gas and water vapor generated by the vacuum separator partially enter a cooler to be cooled, an outlet of the cooler is provided with two paths, one path is provided with a ballast valve, and the other path is provided with a vacuum valve and a vacuum pump; transformer oil subjected to vacuum separation by the vacuum separator is connected to the multi-stage filtering system, the multi-stage filtering system comprises an oil pump, an outlet of the oil pump is sequentially connected with a secondary filter and a fine filter, and an oil outlet valve is arranged at an outlet of the fine filter. According to the utility model, the oil-water state of the transformer is separated, clean oil is finally obtained through separation, and the reutilization of the insulating oil of the transformer is realized.

Description

Technical Field

[0001] This utility model belongs to the field of power equipment technology, specifically relating to a transformer oil-water separation device. Background Technology

[0002] During the daily operation of a substation, rainwater enters the emergency oil sump during rainfall, so in most cases, the emergency oil sump contains a certain amount of rainwater. When an accident occurs, transformer oil enters the emergency oil sump. Because the density of transformer oil is less than that of water, the transformer oil floats on top of the rainwater. The large amount of rainwater stored in the emergency oil sump occupies the space for transformer oil discharge, causing the floating oil in the emergency oil sump to overflow and thus harm the surrounding environment.

[0003] Therefore, it is necessary to study an oil-water separation device for transformers to solve the problem of oil-water discharge in the operation and maintenance of oil-immersed transformers, achieve oil-water separation, avoid transformer oil leakage and environmental pollution, and realize the reuse of transformer insulating oil. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a transformer oil-water separation device, which is installed on the channel for draining transformer oil to separate the oil and water in the transformer and finally obtain clean oil, enabling the reuse of transformer insulating oil.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A transformer oil-water separation device is installed on the channel for discharging transformer oil sludge, including a slag removal and filtration system, a vacuum system and a multi-stage filtration system;

[0007] The slag removal and filtration system includes a primary filter, on which an oil inlet valve is provided;

[0008] The oil outlet of the primary filter is connected to a vacuum system via a heater, and the vacuum system includes a vacuum separator.

[0009] The vacuum separator has two inlets, one equipped with a bypass valve and the other with a solenoid valve.

[0010] The gas and water vapor generated by the vacuum separator enter the cooler for cooling. The cooler outlet is set with two outlets: one is equipped with a steam ballast valve, and the other is equipped with a vacuum valve and a vacuum pump.

[0011] The transformer oil separated by the vacuum separator is connected to a multi-stage filtration system, which includes an oil pump. The oil pump outlet is connected in sequence to a secondary filter and a fine filter. An oil outlet valve is installed at the outlet of the fine filter.

[0012] Furthermore, the primary filter is equipped with a first drain valve, the vacuum separator with a second drain valve, the cooler with a third drain valve, the secondary filter with a fourth drain valve, and the fine filter with a fifth drain valve.

[0013] Furthermore, the vacuum separator is equipped with an infrared liquid level controller.

[0014] Furthermore, a temperature controller is installed at the outlet of the heater.

[0015] Furthermore, a pressure gauge is installed between the secondary filter and the fine filter.

[0016] Furthermore, a pressure gauge and a pressure controller are installed between the oil pump and the secondary filter, and the outlet of the pressure gauge is connected to the heater inlet via a circulation valve.

[0017] Furthermore, a sampling valve is provided at the outlet of the fine filter.

[0018] The beneficial effects of this utility model are:

[0019] 1) This utility model can effectively remove impurities such as floating oil, particles and mold that are prone to affecting the environment, and will not pollute the ground where the equipment is placed during operation, thus meeting environmental protection standards.

[0020] 2) This utility model uses infrared light to automatically control the liquid level and maintain a dynamic balance between the amount of oil entering and leaving the machine, thus achieving separation of man and machine. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] In the diagram, 1-oil inlet valve, 2-drain valve one, 11-drain valve two, 26-drain valve three, 15-drain valve four, 19-drain valve five, 3-primary filter, 4-circulation valve, 5-heater, 6-temperature controller, 7-bypass valve, 8-solenoid valve, 9-vacuum separator, 10-infrared level controller, 12-oil pump, 13-pressure controller, 14-pressure gauge two, 17-pressure gauge one, 16-secondary filter, 18-fine filter, 20-sampling valve, 21-oil outlet valve, 22-vacuum gauge, 23-ballast valve, 24-cooler, 25-vacuum valve, 27-vacuum pump. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments.

[0024] like Figure 1 As shown, the transformer oil-water separation device of this utility model is installed on the channel for discharging transformer oil sludge, and includes a slag removal and filtration system, a vacuum system and a multi-stage filtration system;

[0025] The slag removal and filtration system includes a primary filter 3, which is used to remove most of the impurities, mechanical impurities and free carbon in the oil-water mixture; the primary filter 3 is equipped with an oil inlet valve 1; the oil outlet of the primary filter 3 is connected to the vacuum system via a heater 5, and a temperature controller 6 is installed at the outlet of the heater 5.

[0026] After preliminary filtration, the mixture enters the vacuum separator 9 for degassing and dehydration of the oil-water mixture. Through compound three-dimensional flash evaporation, liquid water is quickly removed, and trace amounts of dissolved water are removed. This efficiently completes the degassing, dehydration, and treatment of transformer oil, improving the oil's insulation strength and quality.

[0027] The vacuum separator 9 is equipped with an infrared liquid level controller 10, which automatically controls the liquid level in the vacuum separator to maintain a dynamic balance between the inlet and outlet oil volumes. The vacuum separator 9 has two inlets, equipped with a bypass valve 7 and a solenoid valve 8 respectively. When the solenoid valve 8 fails to operate due to a malfunction or other reasons, the bypass valve 7 can be manually controlled to adjust the oil flow. The gas and water vapor generated by the vacuum separator 9 partially enter the cooler 24 for cooling. The cooler 24 has two outlets: one equipped with a steam ballast valve 23, and the other with a vacuum valve 25 and a vacuum pump 27.

[0028] The transformer oil separated by vacuum separator 9 is connected to a multi-stage filtration system, which uses a combination of stainless steel filter, double mesh filter and polymer material filter element. It has high filtration accuracy, large scale holding capacity, high strength, and an overpressure alarm shutdown device to prevent the filter element from deforming and to prevent the motor from burning out due to excessive pressure.

[0029] The multi-stage filtration system includes an oil pump 12, the outlet of which is sequentially connected to a secondary filter 16 and a fine filter 18. An oil outlet valve 21 is installed at the outlet of the fine filter 18. A pressure gauge 17 is installed between the secondary filter 16 and the fine filter 18. A sampling valve 20 is installed at the outlet of the fine filter 18.

[0030] A pressure gauge 14 and a pressure controller 13 are installed between the oil pump 12 and the secondary filter 16. The outlet of the pressure gauge 14 is connected to the inlet of the heater 5 via the circulation valve 4.

[0031] The primary filter 3 is equipped with a drain valve 1 2, the vacuum separator 9 is equipped with a drain valve 2 11, the cooler 24 is equipped with a drain valve 3 26, the secondary filter 16 is equipped with a drain valve 4 15, and the fine filter 18 is equipped with a drain valve 5 19.

[0032] This invention employs a control system to manage the entire process, achieving automation and ensuring convenience and safety during machine operation. It can operate online for extended periods, enabling the complete oil-water separation process.

[0033] The working principle of this utility model is as follows:

[0034] The oil-water mixture in the transformer first enters the oil-water separation device through the oil inlet valve 1. The primary filter 3 removes most impurities, mechanical impurities, and free carbon. After preliminary filtration, the mixture is heated by the heater 5 and then enters the vacuum separator 9 for degassing and dehydration. Through a compound three-dimensional flash evaporation process, liquid water and trace amounts of dissolved water are rapidly removed. After dehydration and degassing in the vacuum separator, the generated gas and water vapor enter the cooler 24 for cooling and are then discharged through the steam ballast valve 23 and vacuum pump 27. The transformer oil after vacuum separation enters the oil pump 12. According to the pressure controller 13 and pressure gauge 14, oil that does not meet the standards is re-entered into the heater 5 for heating through the circulation valve 4, while oil that meets the standards is filtered through the secondary filter 16 and the fine filter 18, resulting in higher-precision oil at the oil outlet valve 21.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The content of this utility model is not limited to the embodiments listed. Any equivalent modifications made by those skilled in the art to the technical solution of this utility model by reading this utility model specification shall be covered by the claims of this utility model.

Claims

1. A transformer oil-water separation device, characterized in that: Installed on the transformer oil sludge discharge channel, including slag removal filtration system, vacuum system and multi-stage filtration system; The slag removal and filtration system includes a primary filter (3), and an oil inlet valve (1) is provided on the primary filter (3). The oil outlet of the primary filter (3) is connected to a vacuum system via a heater (5), and the vacuum system includes a vacuum separator (9). Two paths are provided at the inlet of the vacuum separator (9), with a bypass valve (7) and a solenoid valve (8) respectively. The gas and water vapor generated by the vacuum separator (9) enter the cooler (24) for cooling. The cooler (24) has two outlets, one equipped with a steam ballast valve (23) and the other equipped with a vacuum valve (25) and a vacuum pump (27). The transformer oil separated by vacuum separator (9) is connected to a multi-stage filtration system. The multi-stage filtration system includes an oil pump (12). The outlet of the oil pump (12) is connected in sequence to a secondary filter (16) and a fine filter (18). An oil outlet valve (21) is provided at the outlet of the fine filter (18).

2. The transformer oil-water separation device according to claim 1, characterized in that: The primary filter (3) is equipped with a first drain valve (2), the vacuum separator (9) is equipped with a second drain valve (11), the cooler (24) is equipped with a third drain valve (26), the secondary filter (16) is equipped with a fourth drain valve (15), and the fine filter (18) is equipped with a fifth drain valve (19).

3. The transformer oil-water separation device according to claim 2, characterized in that: The vacuum separator (9) is equipped with an infrared liquid level controller (10).

4. The transformer oil-water separation device according to claim 3, characterized in that: A temperature controller (6) is installed at the outlet of the heater (5).

5. The transformer oil-water separation device according to claim 4, characterized in that: A pressure gauge (17) is provided between the secondary filter (16) and the fine filter (18).

6. The transformer oil-water separation device according to claim 5, characterized in that: A pressure gauge (14) and a pressure controller (13) are provided between the oil pump (12) and the secondary filter (16). The outlet of the pressure gauge (14) is connected to the inlet of the heater (5) via a circulation valve (4).

7. A transformer oil-water separation device according to claim 6, characterized in that: A sampling valve (20) is provided at the outlet of the fine filter (18).

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