Pretreatment device and method suitable for efficient purification of wind power plant gear oil

Abstract

The invention provides a pretreatment device and method suitable for efficient purification of wind power plant gear oil, and belongs to the technical field of oil purification. The problems that the system pressure is too high, the filter element is damaged and the foam characteristic exceeds the standard after treatment when the wind driven generator gear oil purification device concentratedly treats the wind driven generator gear oil are solved. The device comprises an oil tank, a circulating pump, an oil feeding pump, an oil discharging pump, an electric heater, a Y-shaped filter and an electric control box, the circulating pump, the oil feeding pump, the oil discharging pump, the electric heater and the Y-shaped filter are all connected with the electric control box, the oil tank comprises a clean oil tank and a dirty oil tank, and a vortex mixer is arranged at the bottom in the clean oil tank and connected with the electric control box. The device is mainly used for purifying wind driven generator gear oil.

Description

Technical Field

[0001] The invention belongs to the technical field of oil purification, and in particular relates to a pretreatment device and method suitable for efficient purification of gear oil in a wind power plant. Background Art

[0002] At present, the wind turbine gear oil purification device commonly used in the market is a vehicle-mounted integrated treatment device. The main disadvantage of the vehicle-mounted integrated treatment device is that it can only process the oil volume of a single wind turbine gearbox. It takes a long time to process the gear oil of multiple wind turbine gearboxes, and it is easily affected by rain, snow and thunder and lightning weather. When encountering extreme weather, it is necessary to stop work. Therefore, the construction period of the wind turbine gear oil treatment project is long and the treatment cost is high. Therefore, centralized treatment of wind turbine gear oil is currently a hot spot for research and implementation in China. However, during the centralized treatment process, due to the different oil qualities of different wind turbines, cross contamination and a large number of bubbles will occur when mixed together. In addition, due to the high viscosity, the treatment temperature is also required to be high, which seriously affects the effect of purification treatment, resulting in problems such as excessive pressure of the treatment system, damage to the filter element, and excessive foam characteristics after treatment. In addition, for purification treatment equipment with an oil online monitoring device, the accuracy and consistency of oil online monitoring are affected. Summary of the invention

[0003] In view of this, the present invention aims to propose a pretreatment device and method suitable for efficient purification of wind farm gear oil, so as to solve the problems of excessive system pressure, filter element damage and excessive foam characteristics after treatment that may occur when a wind turbine gear oil purification device centrally treats wind turbine gear oil.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pretreatment device suitable for efficient purification of gear oil in wind power plants, which includes an oil tank, a circulating pump, a refueling pump, an oil drain pump, an electric heater, a Y-type filter and an electric control box, wherein the circulating pump, the refueling pump, the oil drain pump, the electric heater and the Y-type filter are all connected to the electric control box, the oil tank includes a clean oil tank and a dirty oil tank, a vortex mixer is arranged at the bottom of the clean oil tank, the vortex mixer is connected to the electric control box, the inlet end of the refueling pump is connected to a dirty oil barrel, and the The inlet and outlet ends of the refueling pump are connected to the inlet end of the dirty oil tank through a pipeline, the inlet end of the circulating pump is connected to the outlet end of the dirty oil tank through a pipeline, the outlet end of the circulating pump is connected to the inlet end of the electric heater through a pipeline, the outlet end of the electric heater is respectively connected to the inlet end of the clean oil tank and the inlet end of the dirty oil tank through a three-way pipeline, the inlet end of the oil drain pump is connected to the outlet end of the clean oil tank through a pipeline, the outlet end of the oil drain pump is connected to a clean oil barrel, and the Y-type filter is arranged on the three-way pipeline at the outlet end of the electric heater.

[0005] Furthermore, a three-way ball valve is provided at the intersection of the three-way pipelines.

[0006] Furthermore, the clean oil tank and the dirty oil tank are both provided with bimetallic thermometers.

[0007] Furthermore, a platinum thermal resistor is provided on the dirty oil tank, and the platinum thermal resistor is connected to the electric control box.

[0008] Furthermore, both the clean oil tank and the dirty oil tank are provided with a dryer.

[0009] Furthermore, both the clean oil tank and the dirty oil tank are provided with manhole covers.

[0010] Furthermore, both the clean oil tank and the dirty oil tank are provided with liquid level gauges.

[0011] Furthermore, valves are provided on the pipeline between the inlet end of the oil drain pump and the outlet end of the clean oil tank and on the pipeline between the inlet and outlet ends of the refueling pump and the inlet end of the dirty oil tank.

[0012] The present invention also provides a pretreatment device and method suitable for efficient purification of gear oil in wind power plants, which comprises the following steps:

[0013] Step 1: Start the refueling pump through the electric control box to suck the oil to be treated in the dirty oil barrel into the dirty oil tank. After all the oil is sucked in, turn off the refueling pump through the electric control box;

[0014] Step 2: Start the circulation pump through the electric control box. The circulation pump sucks oil from the dirty oil tank. The sucked oil flows back to the dirty oil tank after passing through the electric heater, Y-type oil filter and three-way pipeline in sequence. When the oil in the dirty oil tank reaches the required temperature after circulation heating, the three-way ball valve is switched through the electric control box to allow the oil to flow into the clean oil tank. After all the oil flows into the clean oil tank, the circulation pump is turned off through the electric control box.

[0015] Step 3: Start the vortex mixer through the electric control box, vortex for the required time, and then turn off the vortex mixer;

[0016] Step 4: Start the oil drain pump through the electric control box to guide the pre-treated oil in the clean oil tank into the clean oil barrel. After all the oil is drained out, turn off the oil drain pump through the electric control box;

[0017] Step 5: After the oil treatment is completed, turn off the power of the device.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a pretreatment device and method suitable for efficient purification of gear oil in wind farms. The oil in the dirty oil tank is circulated and heated by the setting of a circulating pump and an electric heater, and filtered by a Y-type filter to meet the purification requirements of wind turbine gear oil with different viscosities;

[0020] 2. The present invention provides a pretreatment device and method suitable for efficient purification of gear oil in wind farms. By setting a clean oil tank and a vortex mixer at the bottom of the clean oil tank, the bubbles in the heated oil in the clean oil tank are effectively eliminated, thereby solving the problems of excessive pressure in the treatment system, damage to the filter element, and excessive foam characteristics after treatment during purification. The various components are controlled by the electric control box to ensure the accuracy and consistency of the oil online monitoring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a front view schematic diagram of a pretreatment device structure suitable for efficient purification of gear oil in a wind power plant according to the present invention;

[0023] Figure 2 It is a schematic top view of a pretreatment device structure suitable for efficient purification of gear oil in a wind farm according to the present invention;

[0024] Figure 3 It is a side view schematic diagram of the structure of a pretreatment device suitable for efficient purification of gear oil in a wind power plant according to the present invention.

[0025] 1-clean oil tank, 2-dirty oil tank, 3-fueling pump, 4-circulation pump, 5-oil drain pump, 6-electric heater, 7-Y-type filter, 8-electric control box, 9-bimetallic thermometer, 10-platinum thermal resistance, 11-liquid level gauge, 12-dryer, 13-three-way pipeline, 14-manhole cover. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0027] See also Figure 1-3The present embodiment is described as a pretreatment device suitable for efficient purification of gear oil in a wind power plant, which comprises an oil tank, a circulating pump 4, a refueling pump 3, an oil drain pump 5, an electric heater 6, a Y-type filter 7 and an electric control box 8, wherein the circulating pump 4, the refueling pump 3, the oil drain pump 5, the electric heater 6 and the Y-type filter 7 are all connected to the electric control box 8, the oil tank comprises a clean oil tank 1 and a dirty oil tank 2, a vortex mixer is provided at the bottom of the clean oil tank 1, the vortex mixer is connected to the electric control box 8, the inlet end of the refueling pump 3 is connected to a dirty oil barrel, the inlet and outlet ends of the refueling pump 3 are connected to the inlet end of the dirty oil tank 2 through a pipeline, the inlet end of the circulating pump 4 is connected to the outlet end of the dirty oil tank 2 through a pipeline, the outlet end of the circulating pump 4 is connected to the inlet end of the electric heater 6 through a pipeline, and the outlet end of the electric heater 6 is respectively connected to the clean oil tank 1 through a three-way pipeline 13. The inlet end of 1 is connected to the inlet end of the dirty oil tank 2, the inlet end of the oil discharge pump 5 is connected to the outlet end of the clean oil tank 1 through a pipeline, the outlet end of the oil discharge pump 5 is connected to the clean oil barrel, and the Y-type filter 7 is arranged on the three-way pipeline 13 at the outlet end of the electric heater 6. In this embodiment, the oil in the dirty oil tank 2 is circulated and heated by the arrangement of the circulating pump 4 and the electric heater 6, and filtered by the Y-type filter 7. The treated oil meets the requirements of purification of fan gear oils of different viscosities, and by arranging the clean oil tank 1 and arranging a vortex mixer at the bottom of the clean oil tank 1, the bubbles in the heated oil in the clean oil tank 1 are effectively eliminated, which solves the problems of excessive pressure of the treatment system, damage to the filter element, and excessive foam characteristics after treatment during purification, and controls each component through the electric control box to ensure the accuracy and consistency of the oil online monitoring device.

[0028] In this embodiment, the circulation pump 4, the refueling pump 3, the oil discharge pump 5, the electric heater 6 and the Y-type filter 7 are all controlled by the electric control box 8, which has strong functionality and high degree of automation.

[0029] The vortex mixer described in this embodiment controls the vortex duration through the electric control box 8, and the bubbles in the oil can be eliminated after the vortex mixer is started.

[0030] The accuracy of the Y-type filter 7 in this embodiment is 50 μm.

[0031] In this embodiment, the refueling pump 3 has a flow rate of 45 L / min, a maximum pressure of 5 bar, and a power of 3 kW.

[0032] In this embodiment, the circulation pump 4 has a flow rate of 45 L / min, a maximum pressure of 5 bar, and a power of 3 kW.

[0033] In this embodiment, the oil discharge pump 5 has a flow rate of 45 L / min, a maximum pressure of 5 bar, and a power of 3 kW.

[0034] In this embodiment, the circulation pump 4 , the refueling pump 3 and the oil discharge pump 5 are all vertical screw pumps, and are all controlled by the electric control box 8 .

[0035] like Figure 2 As shown, the pipelines connected to the outlet and inlet ends of the oil discharge pump 5 in this embodiment are both three-way pipelines. The oil discharge pump 5 can be connected to the next-level processing device through the three-way pipelines set at its outlet and inlet ends. By setting a three-way valve, the pre-treated oil can be selectively directed to the clean oil barrel or the next-level processing device for subsequent processing.

[0036] In this embodiment, the outlet end of the oil discharge pump 5 and the inlet end of the refueling pump 3 are both provided with hoses, and the oil discharge pump 5 and the refueling pump 3 are respectively connected to the clean oil barrel and the dirty oil barrel through the hoses.

[0037] In this embodiment, the electric heater 6 is a cartridge electric heater, which is provided with a temperature sensor and is connected to the electric control box 8, and the temperature control accuracy is ±0.5°C.

[0038] In this embodiment, a three-way ball valve is provided at the intersection of the three-way pipeline 13, and the three-way ball valve is used to control the on-off and switching of the three-way pipeline. In this embodiment, the three-way ball valve can be controlled by the electric control box 8, and can also be manually controlled by a handle.

[0039] In this embodiment, the clean oil tank 1 and the dirty oil tank 2 are both provided with bimetallic thermometers 9, which are used for manually visually observing the oil temperature in the clean oil tank 1 and the dirty oil tank 2.

[0040] In this embodiment, a platinum thermal resistor 10 is provided on the dirty oil tank 2, and the platinum thermal resistor 10 is connected to the electric control box 8. The signal output end of the platinum thermal resistor 10 is connected to the signal collection end of the electric control box 8, which can monitor the temperature of the oil inside the dirty oil tank 2 in real time and feed back to the electric control box 8 in real time.

[0041] In this embodiment, both the clean oil tank 1 and the dirty oil tank 2 are provided with a dryer 12. In this embodiment, the dryer 12 is an oil-carrying dryer to prevent moisture in the air from entering the oil tank.

[0042] In this embodiment, both the clean oil tank 1 and the dirty oil tank 2 are provided with manhole covers 14. The provision of the manhole covers 14 facilitates the inspection and maintenance of the clean oil tank 1 and the dirty oil tank 2. The staff can observe the internal conditions of the oil tanks by opening the manhole covers 14.

[0043] In this embodiment, both the clean oil tank 1 and the dirty oil tank 2 are provided with a liquid level gauge 11 , and the liquid level gauge 11 is used to detect the oil level in the clean oil tank 1 and the dirty oil tank 2 .

[0044] This embodiment also provides a method for a pretreatment device suitable for efficient purification of wind farm gear oil, which comprises the following steps:

[0045] Step 1: Start the refueling pump 3 through the electric control box 8 to suck the oil to be treated in the dirty oil barrel into the dirty oil tank 2. After all the oil is sucked in, turn off the refueling pump 3 through the electric control box 8;

[0046] Step 2: Start the circulation pump 4 through the electric control box 8, the circulation pump 4 sucks oil from the dirty oil tank 2, and the sucked oil flows back to the dirty oil tank 2 after passing through the electric heater 6, the Y-type oil filter, and the three-way pipeline 13 in sequence. When the oil in the dirty oil tank 2 reaches the required temperature after circulation heating, the three-way ball valve is switched through the electric control box 8 to make the oil flow into the clean oil tank 1. After all the oil flows into the clean oil tank 1, the circulation pump 4 is turned off through the electric control box 8;

[0047] Step 3: Start the vortex mixer through the electric control box 8, and after vortexing for a required time, turn off the vortex mixer;

[0048] Step 4: Start the oil drain pump 5 through the electric control box 8 to guide the pre-treated oil in the clean oil tank 1 into the clean oil barrel. After all the oil is discharged, turn off the oil drain pump 5 through the electric control box 8;

[0049] Step 5: After the oil treatment is completed, turn off the power of the device.

[0050] The oil described in this embodiment can be heated to 80°C at most.

[0051] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A pretreatment device suitable for efficient purification of gear oil in wind power plants, characterized by: It comprises an oil tank, a circulation pump (4), a refueling pump (3), an oil drain pump (5), an electric heater (6), a Y-type filter (7) and an electric control box (8). The circulation pump (4), the refueling pump (3), the oil drain pump (5), the electric heater (6) and the Y-type filter (7) are all connected to the electric control box (8). The oil tank comprises a clean oil tank (1) and a dirty oil tank (2). A vortex mixer is arranged at the bottom of the clean oil tank (1). The vortex mixer is connected to the electric control box (8). The inlet end of the refueling pump (3) is connected to a dirty oil barrel. The inlet and outlet ends of the refueling pump (3) are connected to the inlet end of the dirty oil tank (2). The two oil tanks are connected by pipelines, the inlet end of the circulation pump (4) is connected to the outlet end of the dirty oil tank (2) by pipelines, the outlet end of the circulation pump (4) is connected to the inlet end of the electric heater (6) by pipelines, the outlet end of the electric heater (6) is respectively connected to the inlet end of the clean oil tank (1) and the inlet end of the dirty oil tank (2) by three-way pipelines (13), the inlet end of the oil discharge pump (5) is connected to the outlet end of the clean oil tank (1) by pipelines, the outlet end of the oil discharge pump (5) is connected to a clean oil barrel, and the Y-type filter (7) is arranged on the three-way pipeline (13) at the outlet end of the electric heater (6).

2. A pretreatment device suitable for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: A three-way ball valve is provided at the intersection of the three-way pipelines (13).

3. A pretreatment device suitable for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: The clean oil tank (1) and the dirty oil tank (2) are both provided with bimetallic thermometers (9).

4. A pretreatment device suitable for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: The dirty oil tank (2) is provided with a platinum thermal resistor (10), and the platinum thermal resistor (10) is connected to the electric control box (8).

5. A pretreatment device suitable for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: The clean oil tank (1) and the dirty oil tank (2) are both provided with a dryer (12).

6. A pretreatment device for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: The clean oil tank (1) and the dirty oil tank (2) are both provided with manhole covers (14).

7. A pretreatment device for efficient purification of gear oil in wind power plants according to claim 1, characterized in that: The clean oil tank (1) and the dirty oil tank (2) are both provided with liquid level meters (11).

8. A method for the pretreatment device for efficient purification of gear oil in wind power plants as claimed in claim 1, characterized in that: It includes the following steps: Step 1: Start the refueling pump (3) through the electric control box (8) to suck the oil to be treated in the dirty oil barrel into the dirty oil tank (2). After all the oil is sucked in, turn off the refueling pump (3) through the electric control box (8); Step 2: The circulation pump (4) is started through the electric control box (8), and the circulation pump (4) sucks oil from the dirty oil tank (2). The sucked oil flows back to the dirty oil tank (2) after passing through the electric heater (6), the Y-type oil filter, and the three-way pipeline (13) in sequence. When the oil in the dirty oil tank (2) reaches the required temperature after being circulated and heated, the three-way ball valve is switched through the electric control box (8) to allow the oil to flow into the clean oil tank (1). After all the oil flows into the clean oil tank (1), the circulation pump (4) is turned off through the electric control box (8); Step 3: Start the vortex mixer through the electric control box (8), vortex for a desired time, and then turn off the vortex mixer; Step 4: Start the oil drain pump (5) through the electric control box (8) to guide the pre-treated oil in the clean oil tank (1) into the clean oil barrel. After all the oil is drained out, turn off the oil drain pump (5) through the electric control box (8); Step 5: After the oil treatment is completed, turn off the power of the device.

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