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CN-224228797-U - Oil return device and wind generating set

CN224228797UCN 224228797 UCN224228797 UCN 224228797UCN-224228797-U

Abstract

The application relates to the technical field of maintenance of wind turbine gearboxes, in particular to an oil return device and a wind turbine. The oil return device comprises an oil tank and a driving structure, wherein the oil tank is provided with a containing cavity for containing oil, the driving structure comprises a valve block, a first driving piece and a second driving piece, and the valve block comprises a valve core, and a first interface assembly, a second interface assembly, a third interface assembly and a fourth interface assembly which are arranged on the valve core. The first interface component is communicated with part of the third interface component and part of the fourth interface component to form a first connecting passage, the first driving piece is used for extracting oil of an oil leakage port of the gear box into the accommodating cavity through the first connecting passage, the second interface component is communicated with part of the third interface component and part of the fourth interface component to form a second connecting passage, the first connecting passage and the second connecting passage are arranged independently of each other, and the second driving piece is used for injecting the oil in the accommodating cavity into the gear box through the second connecting passage.

Inventors

  • ZHAO XIAOJING
  • ZHANG YAOYUAN
  • GAO SONGYU

Assignees

  • 北京金风科创风电设备有限公司

Dates

Publication Date
20260512
Application Date
20250526

Claims (12)

  1. 1. An oil return device, characterized by comprising: a tank (10) having a receiving chamber for receiving oil; The driving structure (20) is arranged on the oil tank (10), the driving structure (20) comprises a valve block (100), a first driving piece (200) and a second driving piece (300), the valve block (100) comprises a valve core (110) and a first interface component (121), a second interface component (122), a third interface component (123) and a fourth interface component (124) which are arranged on the valve core (110), the first interface component (121) is connected with the first driving piece (200), the second interface component (122) is connected with the second driving piece (300), the third interface component (123) is communicated with the accommodating cavity, and the fourth interface component (124) is used for being communicated with a gear box; The first interface assembly (121) is communicated with a part of the third interface assembly (123) and a part of the fourth interface assembly (124) to form a first connecting passage, the first driving piece (200) is used for pumping oil of an oil leakage port of the gear box into the accommodating cavity through the first connecting passage, the second interface assembly (122) is communicated with a part of the third interface assembly (123) and a part of the fourth interface assembly (124) to form a second connecting passage, the first connecting passage and the second connecting passage are arranged independently of each other, and the second driving piece (300) is used for injecting the oil in the accommodating cavity into the gear box through the second connecting passage.
  2. 2. The oil return device according to claim 1, wherein the valve core (110) has a polyhedral structure, the valve core (110) includes a plurality of side walls (111), and at least two of the first interface assembly (121), the second interface assembly (122), the third interface assembly (123) and the fourth interface assembly (124) are respectively located on different side walls (111).
  3. 3. The oil return device according to claim 1, wherein the first interface assembly (121), the second interface assembly (122), the third interface assembly (123) and the fourth interface assembly (124) each comprise an oil outlet and an oil inlet; An oil inlet of the fourth interface component (124), an oil inlet of the first interface component (121), the first driving piece (200), an oil outlet of the first interface component (121) and an oil outlet of the third interface component (123) are sequentially communicated; the oil inlet of the third interface component (123), the oil inlet of the second interface component (122), the second driving piece (300), the oil outlet of the second interface component (122) and the oil outlet of the fourth interface component (124) are sequentially communicated.
  4. 4. The oil return device according to claim 1, further comprising a control assembly (30), the control assembly (30) comprising a timing member, a level detecting member (31) and a control member, the timing member and the level detecting member (31) being both in communication with the control member, the level detecting member (31) being for monitoring the oil level in the receiving chamber, the control member being in communication with the driving structure (20); and/or the control assembly (30) further comprises a power supply (32), the power supply (32) being adapted to power the drive structure (20) and the control assembly (30).
  5. 5. The oil return device according to claim 4, further comprising a heating element (40), the heating element (40) being disposed in the accommodating chamber, the heating element (40) being configured to adjust the temperature of the oil in the accommodating chamber; The control assembly (30) further comprises a temperature detection piece (33), the temperature detection piece (33) is in communication connection with the control piece, and the temperature detection piece (33) is used for monitoring the oil temperature.
  6. 6. The oil return device according to any one of claims 1 to 5, further comprising a filter element (50), the filter element (50) being arranged to the oil tank (10); The valve block (100) further comprises a fifth interface assembly (125) arranged on the valve core (110), the fifth interface assembly (125) is located in the second connecting passage and connected with the filter element (50), and the filter element (50) is used for filtering oil in the second connecting passage.
  7. 7. The oil return device according to any one of claims 1 to 5, characterized in that the valve block (100) is further provided with a pressure measuring port (130), a pressure detecting member (140) and an overflow valve (150), the pressure detecting member (140) being adapted to monitor the filling pressure; and/or, valve piece (100) still is provided with switch spare (160) and oil drain valve (170), switch spare (160) are used for controlling hold the chamber with the break-make between second driving piece (300), oil drain valve (170) are used for discharging the fluid in valve piece (100).
  8. 8. The oil return device according to any one of claims 1 to 5, further comprising a one-way valve (60), the one-way valve (60) being disposed between the first driving member (200) and the receiving chamber for preventing backflow of oil; And/or, further comprising an air filter (70) arranged on the oil tank (10) and communicated with the accommodating cavity, wherein the air filter (70) is used for discharging the gas in the accommodating cavity and preventing the external gas from entering the accommodating cavity.
  9. 9. The oil return device according to any one of claims 1 to 5, characterized in that the first driving member (200) comprises a first motor and a first pump body driven by the first motor; the second driving piece (300) comprises a second motor and a second pump body driven by the second motor; wherein the first pump body comprises a peristaltic pump and the second pump body comprises a gear pump.
  10. 10. The oil return device according to any one of claims 1 to 5, characterized in that the oil tank (10) is provided with an oil drain (11) and an oil filler (12) in communication with the receiving chamber, the oil filler (12) being provided with a first removable closure member, the oil drain (11) being provided with a second removable closure member, the oil drain (11) being adapted to drain oil from the receiving chamber.
  11. 11. The oil return device according to any one of claims 1 to 5, further comprising a fixing bracket (80), wherein the fixing bracket (80) is disposed on the oil tank (10) and is fixedly connected to the second driving member (300), and the fixing bracket (80) is used for fixing the second driving member (300).
  12. 12. A wind power generator set comprising a generator, a gearbox and a scavenging device according to any one of claims 1 to 11, wherein a fourth interface assembly (124) of the scavenging device is connected to the gearbox and arranged at the connection of the gearbox and the generator.

Description

Oil return device and wind generating set Technical Field The application relates to the technical field of maintenance of wind turbine gearboxes, in particular to an oil return device and a wind turbine. Background The wind turbine generator gearbox is a core transmission component for connecting the wind wheel and the generator, and converts low-rotation-speed mechanical energy captured by the wind wheel into high rotation speed required by the generator through a multi-stage gear structure so as to improve the electric energy conversion efficiency. The long-term operation of the wind turbine generator system gearbox can generate local oil leakage phenomenon, so that oil loss and environmental pollution are caused, and the risks of gear abrasion and bearing failure are increased. In the related art, the generator is dismantled after shutdown to maintain and overhaul the gearbox, so that high tooling and labor cost are consumed. Disclosure of utility model The application provides an oil return device and a wind generating set, which can realize recovery and reinjection of oil leaked from a gear box and reduce the frequency of maintenance and repair of the gear box and the operation and maintenance cost. In order to achieve the above object, the technical scheme of the present application is as follows: The application provides an oil return device which comprises an oil tank and a driving structure, wherein the oil tank is provided with a containing cavity used for containing oil, the driving structure is arranged on the oil tank and comprises a valve block, a first driving piece and a second driving piece, the valve block comprises a valve core and a first interface assembly, a second interface assembly, a third interface assembly and a fourth interface assembly which are arranged on the valve core, the first interface assembly is connected with the first driving piece, the second interface assembly is connected with the second driving piece, the third interface assembly is communicated with the containing cavity, the fourth interface assembly is used for being communicated with a gear box, the first interface assembly is communicated with a part of the third interface assembly and a part of the fourth interface assembly to form a first connecting passage, the first driving piece is used for pumping oil of an oil leakage port of the gear box into the containing cavity through the first connecting passage, the second interface assembly is communicated with a part of the third interface assembly and a part of the fourth interface assembly to form a second connecting passage, the first connecting passage and the second connecting passage are arranged independently of each other, and the second driving piece is used for injecting oil in the containing cavity into the gear box through the second connecting passage. In one possible implementation manner, the oil return device provided by the application has a polyhedral valve core, the valve core comprises a plurality of side walls, and at least two of the first interface component, the second interface component, the third interface component and the fourth interface component are respectively positioned on different side walls. In a possible implementation manner, the oil return device provided by the application comprises an oil outlet and an oil inlet, wherein the oil inlet of the fourth interface component, the oil inlet of the first interface component, the first driving piece, the oil outlet of the first interface component and the oil outlet of the third interface component are sequentially communicated, and the oil inlet of the third interface component, the oil inlet of the second interface component, the second driving piece, the oil outlet of the second interface component and the oil outlet of the fourth interface component are sequentially communicated. In one possible implementation manner, the oil return device further comprises a control assembly, the control assembly comprises a timing piece, a liquid level detection piece and a control piece, the timing piece and the liquid level detection piece are in communication connection with the control piece, the liquid level detection piece is used for monitoring the liquid level of oil in the accommodating cavity, the control piece is in communication connection with the driving structure, and/or the control assembly further comprises a power supply piece which is used for supplying power for the driving structure and the control assembly. In a possible implementation manner, the oil return device provided by the application further comprises a heating element, wherein the heating element is arranged in the accommodating cavity and used for adjusting the oil temperature in the accommodating cavity, and the control assembly further comprises a temperature detection element which is in communication connection with the control element and used for monitoring the oil temperature. In one possible imple