A grease antifreeze filling device for wind power equipment in cold regions
By introducing a dynamic heating method using a rotating frame and heating wire into the grease filling device, the problem of grease freezing in cold regions is solved, enabling effective grease filling in low-temperature environments and ensuring normal equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG POWER ENG
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-02
AI Technical Summary
Existing grease filling equipment lacks antifreeze functionality and cannot be effectively used in cold regions, causing the grease to freeze in low-temperature environments and affecting the normal operation of the equipment.
A grease filling device was designed, which includes a grease tank, a power supply, a control circuit, and an antifreeze mechanism. By combining a rotating frame and a heating wire, dynamic heating and mechanical stirring are achieved to ensure that the grease maintains a suitable viscosity in a low-temperature environment and prevents freezing.
In extreme low-temperature environments, the grease is rapidly and uniformly thawed, ensuring its fluidity in cold regions, meeting filling requirements, and guaranteeing stable equipment operation.
Smart Images
Figure CN224315908U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wind power grease antifreeze technology, and in particular to a grease antifreeze filling device for wind power equipment in cold regions. Background Technology
[0002] The operation of wind power equipment relies on the coordinated work of multiple moving parts, including main bearings, yaw bearings, pitch bearings, couplings, etc. These parts require lubricating grease to reduce wear, reduce energy consumption, prevent corrosion, and ensure stable operation due to friction, load, environmental corrosion, and other issues.
[0003] Over prolonged operation, various moving parts experience continuous grease depletion. To prevent damage due to insufficient lubrication, maintenance personnel need to periodically add grease to each moving part. Adding grease typically requires grease filling equipment. Existing grease filling equipment usually lacks antifreeze functionality and is unsuitable for use in cold regions. Utility Model Content
[0004] The main purpose of this application is to propose a grease antifreeze filling device for wind power equipment in cold regions, which aims to solve the problem that existing grease filling equipment usually does not have antifreeze function.
[0005] To achieve the above objectives, the present application proposes a grease antifreeze filling device for wind power equipment in cold regions, comprising: a grease storage tank, a power supply, and a control circuit. The grease storage tank is connected to a grease injection mechanism for filling grease into a designated location. An antifreeze mechanism is provided inside the grease storage tank. The power supply, the grease injection mechanism, and the antifreeze mechanism are all electrically connected to the control circuit.
[0006] The antifreeze mechanism includes a rotating frame, which is rotatably mounted inside the fat storage tank via a rotating shaft. The rotating shaft is connected to a drive structure. A heating wire is embedded in the rotating frame, and a wire is embedded in the rotating shaft. The first end of the wire is connected to the heating wire, and the other end of the wire is electrically connected to the control circuit via a rotating contact structure. The rotating contact structure ensures that the wire is always electrically connected to the control circuit.
[0007] Optionally, it also includes a housing, which is divided into an electrical space and a mechanical space by a partition. The grease tank is fixedly installed on the outside of the housing. The power supply, control circuit, and rotary contact structure are all located in the electrical space, and the drive structure is located in the mechanical space.
[0008] Optionally, the rotary contact structure includes a first contact ring and a second contact ring coaxially arranged with the rotating shaft. Both the first contact ring and the second contact ring are fixedly mounted on the partition plate, and both the first contact ring and the second contact ring are electrically connected to the control circuit. The rotating shaft extends through the partition plate to the center of the first contact ring and the second contact ring. A first sliding contact and a second sliding contact are fixedly mounted on the rotating shaft. The first sliding contact slides in contact with the first contact ring, and the second sliding contact slides in contact with the second contact ring. The first sliding contact and the second sliding contact are respectively connected to the corresponding wires.
[0009] Optionally, the drive structure includes a drive motor, which is fixedly mounted on the partition plate, and the drive motor is connected to the rotating shaft via a gear assembly.
[0010] Optionally, the grease injection mechanism includes a power pump, which is fixedly installed in the mechanical space. The power pump is connected to the inside of the grease storage tank through a suction pipe, and the power pump is connected to an injection gun through a delivery pipe.
[0011] Optionally, the refueling gun includes a gun body, on which a control trigger and a refueling tube are provided, and the refueling tube is detachably connected to the gun body.
[0012] Optionally, the gun body is provided with an illumination lamp facing the outer end of the filling tube, the illumination lamp is hinged to the gun body, and a damper is provided at the hinge connection.
[0013] Optionally, a human-machine interface panel is provided on the gun body, and the human-machine interface panel is electrically connected to the control circuit.
[0014] Optionally, both the conveying pipe and the grease storage tank are covered with an insulation layer.
[0015] Optionally, the upper end of the fat storage tank is open, and a lid is provided at the opening. The lid is sealed to the fat storage tank through a detachable structure.
[0016] The technical solution of this application includes a grease reservoir, a power supply, and a control circuit. The grease reservoir is connected to a grease injection mechanism for adding grease to a designated location. An antifreeze mechanism is installed inside the grease reservoir. The power supply, the grease injection mechanism, and the antifreeze mechanism are all electrically connected to the control circuit. The antifreeze mechanism includes a rotating frame, which is rotatably mounted inside the grease reservoir via a rotating shaft. The rotating shaft is connected to a drive structure. A heating wire is embedded in the rotating frame, and a wire is embedded in the rotating shaft. The first end of the wire is connected to the heating wire, and the other end of the wire is electrically connected to the control circuit through a rotating contact structure. The rotating contact structure ensures that the wire is always electrically connected to the control circuit. The power supply provides power to the entire device, and the control circuit coordinates its operation based on preset parameters such as temperature. When the temperature of the grease in the grease tank is lower than the set value, the control circuit activates the anti-freeze mechanism, driving the rotating frame to rotate within the grease tank. Simultaneously, the heating wire is energized and heats up, and the rotation of the frame evenly transfers heat to the grease. Once the grease reaches a suitable viscosity, the grease injection mechanism is activated to deliver the grease to the designated injection points of the wind power equipment, such as bearings and gearboxes. Throughout the process, the wires embedded in the rotating shaft maintain electrical connection with the control circuit through a rotating contact structure, ensuring continuous power supply to the heating wire during rotation. This design, through the combination of the rotating frame and the heating wire, enables the grease in the grease tank to be heated quickly and evenly, preventing the grease from freezing and ensuring that the grease viscosity remains stable within a suitable range at low temperatures, meeting the grease injection flow requirements. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the main internal structure of the grease antifreeze filling device for wind power equipment in cold regions, as described in this application.
[0019] Figure 2 This is a schematic diagram of the filling gun for the grease antifreeze filling device for wind power equipment in cold regions, as described in this application.
[0020] Figure 3 This application pertains to a grease antifreeze filling device for wind power equipment in cold regions. Figure 1 A magnified view of the local structure at point A in the middle.
[0021] Explanation of icon numbers:
[0022] 1. Grease storage tank; 2. Power supply; 3. Control circuit; 4. Grease injection mechanism; 410. Power pump; 420. Suction pipe; 430. Delivery pipe; 440. Filling gun; 441. Gun body; 442. Control trigger; 443. Filling tube; 5. Antifreeze mechanism; 510. Rotating frame; 520. Rotating shaft; 530. Drive structure; 531. Drive motor; 532. Gear assembly; 540. Rotary contact structure; 541. First contact ring; 542. Second contact ring; 543. First sliding contact; 544. Second sliding contact; 6. Housing; 601. Partition; 602. Electrical space; 603. Mechanical space; 7. Lighting lamp; 8. Human-machine interface panel; 9. Insulation layer; 10. Tank lid.
[0023] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.
[0026] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0027] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0028] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.
[0029] The operation of wind power equipment relies on the coordinated work of multiple moving parts, including main bearings, yaw bearings, pitch bearings, couplings, etc. These parts require lubricating grease to reduce wear, reduce energy consumption, prevent corrosion, and ensure stable operation due to friction, load, environmental corrosion, and other issues.
[0030] Over prolonged operation, various moving parts experience continuous grease depletion. To prevent damage due to insufficient lubrication, maintenance personnel need to periodically add grease to each moving part. Adding grease typically requires grease filling equipment. Existing grease filling equipment usually lacks antifreeze functionality and is unsuitable for use in cold regions.
[0031] In view of this, this application proposes a device for adding antifreeze grease to wind power equipment in cold regions.
[0032] In the embodiments of this application, reference is made to Figures 1 to 3The aforementioned grease antifreeze filling device for wind power equipment in cold regions includes: a grease storage tank 1, a power supply 2, and a control circuit 3. The grease storage tank 1 is connected to a grease injection mechanism 4 for injecting grease into a designated location. An antifreeze mechanism 5 is provided inside the grease storage tank 1. The power supply 2, the grease injection mechanism 4, and the antifreeze mechanism 5 are all electrically connected to the control circuit 3. The antifreeze mechanism 5 includes a rotating frame 510, which is rotatably mounted inside the grease storage tank 1 via a rotating shaft 520. The rotating shaft 520 is connected to a drive structure 530. A heating wire is embedded in the rotating frame 510, and a wire is embedded in the rotating shaft 520. The first end of the wire is connected to the heating wire, and the other end of the wire is electrically connected to the control circuit 3 via a rotating contact structure 540. The rotating contact structure 540 keeps the wire electrically connected to the control circuit 3 at all times.
[0033] Specifically, power supply 2 supplies power to the entire device, and control circuit 3 coordinates its operation according to preset parameters such as temperature: when the temperature of the lubricating grease in the grease tank 1 is lower than the set value, control circuit 3 activates antifreeze mechanism 5, drive structure 530 to rotate rotating frame 510 inside grease tank 1, and heating wire is energized to generate heat. The rotation of rotating frame 510 evenly transfers heat to the lubricating grease; after the lubricating grease reaches a suitable viscosity, grease injection mechanism 4 is activated to deliver the lubricating grease to the designated grease injection point of the wind power equipment, such as bearings and gearboxes; throughout the process, the wire embedded in the rotating shaft 520 maintains electrical connection with control circuit 3 through rotating contact structure 540, ensuring continuous power supply to the heating wire during rotation. The device employs a "dynamic heating + mechanical stirring" composite method, where heating wire provides heat and rotating frame 510 breaks up the static thermal stratification of the lubricating grease, solving the problem of "local overheating and overall low temperature" in traditional static heating. This is especially effective for high-viscosity lubricating grease that solidifies in extreme environments of -40℃ in cold regions, achieving rapid and uniform thawing.
[0034] Specifically, power source 2 is a low-temperature lithium battery used to store electrical energy and power the antifreeze mechanism 5, grease injection mechanism 4, etc.; a temperature sensor and a liquid level sensor can also be installed in the grease tank 1. The temperature sensor is used to monitor the temperature of the lubricating grease, and the liquid level sensor is used to monitor the remaining oil level. Both the temperature sensor and the liquid level sensor are electrically connected to the control circuit 3.
[0035] In this embodiment, a housing 6 is also included. The housing 6 is divided into an electrical space 602 and a mechanical space 603 by a partition 601. The grease tank 1 is fixedly installed on the top surface of the outer side of the housing 6. The power supply 2, control circuit 3, and rotary contact structure 540 are all located in the electrical space 602, and the drive structure 530 is located in the mechanical space 603. The housing 6 is divided into an electrical space 602 and a mechanical space 603 by the partition 601, and the grease tank 1 is fixed to the outside of the housing 6. During operation, the control circuit 3 in the electrical space 602 receives sensor signals and supplies power to the antifreeze mechanism 5 through the rotary contact structure 540; the drive structure 530 in the mechanical space 603 drives the rotating frame 510 in the grease tank 1 to rotate through the rotating shaft 520; the electrical space 602 and the mechanical space 603 are physically isolated by the partition 601 and do not interfere with each other. Components with similar functions are arranged in a concentrated manner, simplifying wiring and maintenance paths, and adapting to the needs of rapid maintenance of wind power equipment.
[0036] Specifically, to facilitate the movement of this device, a shoulder strap is detachably installed on the housing 6 and the grease tank 1, allowing the user to carry the device on their back; wheels can also be installed on the bottom of the housing 6 to facilitate the movement of the device on flat ground.
[0037] In this embodiment, the rotary contact structure 540 includes a first contact ring 541 and a second contact ring 542 coaxially arranged with the rotating shaft 520. Both the first contact ring 541 and the second contact ring 542 are fixedly mounted on the partition 601, and both are electrically connected to the control circuit 3. The rotating shaft 520 extends through the partition 601 to the center of the first contact ring 541 and the second contact ring 542. A first sliding contact 543 and a second sliding contact 544 are fixedly mounted on the rotating shaft 520. The first sliding contact 543 slides in contact with the first contact ring 541, and the second sliding contact 544 slides in contact with the second contact ring 542. The first sliding contact 543 and the second sliding contact 544 are respectively connected to corresponding wires. The rotating shaft 520 extends through the partition 601 to the electrical space 602, and the first and second sliding contacts 544 at its ends slide in contact with the first and second contact rings 542 fixed on the partition 601, respectively. When the drive structure 530 drives the rotating shaft 520 to rotate, the sliding contact rotates with the rotating shaft 520 and always maintains an electrical connection with the contact ring, so that the heating wire forms a closed loop with the control circuit 3 through the wire, the sliding contact, the contact ring, and ensures that the heating wire is continuously powered during rotation.
[0038] In this embodiment, the drive structure 530 includes a drive motor 531, which can be a low-temperature DC geared motor. The drive motor 531 is fixedly mounted on the partition 601, and the drive motor 531 is connected to the rotating shaft 520 through a gear assembly 532. The control circuit 3 starts the drive motor 531, and the motor output shaft transmits power to the rotating shaft 520 through the meshing of the driving gear and the driven gear in the gear assembly 532. This drives the rotating frame 510 to rotate slowly in the grease tank 1, which, together with the heating wire, achieves uniform heating of the lubricating grease.
[0039] In this embodiment, the grease injection mechanism 4 includes a power pump 410, which is fixedly installed in the mechanical space 603. The power pump 410 is connected to the inside of the grease storage tank 1 through a suction pipe 420, and the power pump 410 is connected to the injection gun 440 through a delivery pipe 430. The control circuit 3 starts the power pump 410, and the pump body draws heated grease from the bottom of the grease storage tank 1 through the suction pipe 420, and then delivers the high-pressure grease to the injection gun 440 through the delivery pipe 430. The operator injects the grease into the grease injection point of the wind power equipment through the injection gun 440. The power pump 410 generates a pressure difference through mechanical extrusion, forcing the grease in the grease storage tank 1 into the delivery pipe 430, overcoming the high viscosity resistance of the grease at low temperatures, realizing long-distance delivery, and adapting to the dispersed grease injection points of wind power equipment.
[0040] In this embodiment, the grease gun 440 includes a gun body 441, on which a control trigger 442 and a grease filling tube 443 are provided. The grease filling tube 443 is detachably connected to the gun body 441. The operator holds the gun body 441, selects the appropriate grease filling tube 443 (such as a straight or curved nozzle) according to the location of the grease filling point on the wind turbine equipment, pulls the control trigger 442 to open the pipeline valve, and injects grease into the target location through the grease filling tube 443; after filling is completed, the trigger is released, the valve closes, and grease filling stops.
[0041] In this embodiment, the gun body 441 is equipped with an illumination lamp 7 facing the outer end of the filling tube 443. The illumination lamp 7 is hinged to the gun body 441, and a damper is provided at the hinge connection. When applying grease in dimly lit areas such as inside the wind turbine nacelle or hub, the operator can rotate the illumination lamp 7 to adjust the illumination angle. The damper keeps the angle fixed, allowing the light to focus on the filling point and clearly observe the filling status. This solves the problem of insufficient light inside the wind turbine nacelle and improves the efficiency of operations in dimly lit environments.
[0042] In this embodiment, a human-machine interface panel 8 is provided on the gun body 441, and the human-machine interface panel 8 is electrically connected to the control circuit 3. The operator sets parameters such as the target grease injection volume, grease injection pressure, and heating temperature through the human-machine interface panel 8 on the dispensing gun 440. The panel displays information such as the current dispensing volume, remaining grease volume, and equipment temperature in real time. After the parameters are set, the control circuit 3 adjusts the power pump 410 and the heating mechanism according to the panel instructions to complete precise dispensing. Integrating the control function into the handheld device facilitates dispensing operations and improves operational efficiency.
[0043] In this embodiment, both the conveying pipe 430 and the grease storage tank 1 are covered with an insulation layer 9. The insulation layer 9 is made of high-density polyurethane; the insulation layer 9 on the outside of the grease storage tank 1 reduces the loss of heat from the tank to the cold environment, and the insulation layer 9 on the outside of the conveying pipe 430 prevents the heated grease from solidifying due to the low temperature of the environment during the conveying process.
[0044] In this embodiment, the upper end of the grease storage tank 1 is open, and a lid 10 is provided at the opening. The lid 10 is sealed to the grease storage tank 1 through a detachable structure. When adding grease, the lid 10 is opened through the detachable structure (such as a snap-fit structure or a threaded structure) to inject grease into the grease storage tank 1. After adding, the lid 10 is closed, and the sealing structure (such as a silicone sealing ring) ensures that the inside of the tank is isolated from the outside world, preventing dust and moisture from entering, while reducing heat loss.
[0045] The technical solution of this application includes a grease reservoir, a power supply, and a control circuit. The grease reservoir is connected to a grease injection mechanism for adding grease to a designated location. An antifreeze mechanism is installed inside the grease reservoir. The power supply, the grease injection mechanism, and the antifreeze mechanism are all electrically connected to the control circuit. The antifreeze mechanism includes a rotating frame, which is rotatably mounted inside the grease reservoir via a rotating shaft. The rotating shaft is connected to a drive structure. A heating wire is embedded in the rotating frame, and a wire is embedded in the rotating shaft. The first end of the wire is connected to the heating wire, and the other end of the wire is electrically connected to the control circuit through a rotating contact structure. The rotating contact structure ensures that the wire is always electrically connected to the control circuit. The power supply provides power to the entire device, and the control circuit coordinates its operation based on preset parameters such as temperature. When the temperature of the grease in the grease tank is lower than the set value, the control circuit activates the anti-freeze mechanism, driving the rotating frame to rotate within the grease tank. Simultaneously, the heating wire is energized and heats up, and the rotation of the frame evenly transfers heat to the grease. Once the grease reaches a suitable viscosity, the grease injection mechanism is activated to deliver the grease to the designated injection points of the wind power equipment, such as bearings and gearboxes. Throughout the process, the wires embedded in the rotating shaft maintain electrical connection with the control circuit through a rotating contact structure, ensuring continuous power supply to the heating wire during rotation. This design, through the combination of the rotating frame and the heating wire, enables the grease in the grease tank to be heated quickly and evenly, preventing the grease from freezing and ensuring that the grease viscosity remains stable within a suitable range at low temperatures, meeting the grease injection flow requirements.
[0046] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A device for adding antifreeze grease to wind power equipment in cold regions, characterized in that, include: The system includes a grease reservoir, a power supply, and a control circuit. The grease reservoir is connected to a grease injection mechanism for adding grease to a designated location. The grease reservoir is equipped with an antifreeze mechanism. The power supply, the grease injection mechanism, and the antifreeze mechanism are all electrically connected to the control circuit. The antifreeze mechanism includes a rotating frame, which is rotatably mounted inside the fat storage tank via a rotating shaft. The rotating shaft is connected to a drive structure. A heating wire is embedded in the rotating frame, and a wire is embedded in the rotating shaft. The first end of the wire is connected to the heating wire, and the other end of the wire is electrically connected to the control circuit via a rotating contact structure. The rotating contact structure ensures that the wire is always electrically connected to the control circuit.
2. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 1, characterized in that, It also includes a housing, which is divided into an electrical space and a mechanical space by a partition. The grease tank is fixedly installed on the outside of the housing. The power supply, control circuit, and rotary contact structure are all located in the electrical space, and the drive structure is located in the mechanical space.
3. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 2, characterized in that, The rotary contact structure includes a first contact ring and a second contact ring coaxially arranged with the rotating shaft. Both the first and second contact rings are fixedly mounted on the partition and are electrically connected to the control circuit. The rotating shaft extends through the partition to the center of the first and second contact rings. A first sliding contact and a second sliding contact are fixedly mounted on the rotating shaft. The first sliding contact slides in contact with the first contact ring, and the second sliding contact slides in contact with the second contact ring. The first and second sliding contacts are respectively connected to the corresponding wires.
4. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 2, characterized in that, The drive structure includes a drive motor, which is fixedly mounted on the partition plate, and the drive motor is connected to the rotating shaft through a gear assembly.
5. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 2, characterized in that, The grease injection mechanism includes a power pump, which is fixedly installed in the mechanical space. The power pump is connected to the inside of the grease storage tank through a suction pipe, and the power pump is connected to an injection gun through a delivery pipe.
6. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 5, characterized in that, The refueling gun includes a gun body, on which a control trigger and a refueling tube are provided, and the refueling tube is detachably connected to the gun body.
7. The antifreeze grease filling device for wind power equipment in cold regions as described in claim 6, characterized in that, The gun body is equipped with an illumination lamp facing the outer end of the filling tube. The illumination lamp is hinged to the gun body, and a damper is provided at the hinge connection.
8. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 6, characterized in that, The gun body is equipped with a human-machine interface panel, which is electrically connected to the control circuit.
9. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 5, characterized in that, Both the conveying pipeline and the grease storage tank are covered with an insulation layer.
10. The grease antifreeze filling device for wind power equipment in cold regions as described in claim 1, characterized in that, The fat storage tank has an opening at the top, and a lid is provided at the opening. The lid is sealed to the fat storage tank through a detachable structure.