Wheel hub ventilation and heat dissipation device

Abstract

The present invention provides a hub ventilation and heat dissipation device, comprising a hub, a wind wheel shaft is fixedly installed on the back side of the hub, an air inlet groove is provided on the windward side of the hub, a gravity offset ring is movably installed in the air inlet groove through an offset bearing, an air inlet hole which penetrates the S-shaped air inlet duct is provided on the side of the rotating axis of the gravity offset ring; an annular air inlet groove is provided in the hub, the air inlet hole is connected with the annular air inlet groove, the annular air inlet groove is connected with a plurality of air ducts arranged in the hub interlayer, an annular air outlet groove which cooperates with the air outlet hole is provided in the air outlet ring, and a return air duct is fixedly installed on the bottom of the air outlet ring. The present invention effectively prevents atmospheric precipitation from entering the interior of the hub by arranging the gravity offset ring and the interlayer air duct inside the hub, actively cools the interior of the hub by wind energy, thereby reducing the energy consumption of the equipment, ensuring the normal operation of the internal connecting parts of the hub, and improving the heat dissipation effect.

Description

Technical Field

[0001] The invention relates to the technical field of fan heat dissipation devices, and in particular to a hub ventilation and heat dissipation device. Background Art

[0002] The prior art discloses a heat dissipation system, a heat dissipation method and a wind turbine generator set with application number "CN201611141780.7", wherein the heat dissipation system comprises: a fan, one or more air inlets arranged on the outer wall of the air deflector and an air outlet arranged at the rear of the nacelle cover; the fan is installed at the air inlet, the air inlet is in front of the hub, the heat dissipation method utilizes the heat dissipation system, and the wind turbine generator set comprises the heat dissipation system. The fan of the present technology draws the air outside the wind turbine generator set into the air inlet, forms a positive pressure airflow in the air inlet, flows into the air deflector, and is diverted through the air deflector and the hub, and cools down the stator upper winding and the rotor upper magnetic steel, the stator lower winding and the rotor lower magnetic steel, the engine bearing and the base, respectively. In this way, through the positive pressure introduction of the airflow and the diversion in the unit, the various components in the unit are cooled down, and the cooling efficiency and effect are improved.

[0003] However, the above-mentioned wind turbine heat dissipation system, heat dissipation method and wind turbine still have obvious defects during use: 1. The water ingress problem of the centrifugal fan was not taken into consideration during the design of the above-mentioned device. Since the fan is exposed to the atmospheric environment, and the internal structure of the hub requires proper waterproof protection, when external rainwater enters the hub, it will cause corrosion of the hub and its connecting structure, thereby affecting the life of the fan. At the same time, rainwater entering the fan blades connected to the hub will cause the fan's rotating center of gravity to be unstable, thereby causing more serious operating accidents; 2. The above-mentioned device drives the centrifugal fan to work by electricity, which results in the fan's driving device being relatively single and highly dependent on electricity. Summary of the invention

[0004] The object of the present invention is to provide a wheel hub ventilation and heat dissipation device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wheel hub ventilation and heat dissipation device comprises a wheel hub, a wind wheel shaft is fixedly mounted on the back side of the wheel hub, an air inlet slot is provided on the windward side of the wheel hub, a gravity offset ring is movably mounted in the air inlet slot via an offset bearing, a windward slot is provided in the gravity offset ring, an S-shaped air inlet duct penetrating the rotation axis of the windward slot is provided on the upper part of the windward slot, and an air inlet hole penetrating the S-shaped air inlet duct is provided on the side of the rotation axis of the gravity offset ring;

[0007] An annular air inlet groove is provided in the wheel hub, the air inlet hole is connected to the annular air inlet groove, the annular air inlet groove is connected to a plurality of air ducts provided in the wheel hub interlayer, and a plurality of heat dissipation holes are provided along the air ducts and are connected to the inner space of the wheel hub;

[0008] An air outlet groove penetrating with the internal space of the hub is arranged at the axis center of the wind wheel shaft, an air outlet hole penetrating with the air outlet groove is opened at the side of the wind wheel shaft, an air outlet ring is arranged on the outer sleeve of the wind wheel shaft, an annular air outlet groove matching with the air outlet hole is arranged in the air outlet ring, a return air pipe is fixedly installed at the bottom of the air outlet ring, a return air duct penetrating with the annular air outlet groove is opened in the return air duct, and return fan blades are arranged in the return air duct.

[0009] Preferably, the wind wheel shaft is fixedly installed in the cabin via a bearing, one end of the return air duct away from the wind wheel shaft is fixedly connected to the bottom of the cabin, and the return air duct is connected to the atmospheric environment.

[0010] Preferably, sealing rubber rings are provided on the gravity offset rings on both sides of the air inlet and on the wind wheel shafts on both sides of the air outlet.

[0011] Preferably, the interior of the gravity offset ring on the upper and lower sides in the horizontal tangent direction of the axis is filled with a polyurethane layer and a cast lead layer respectively.

[0012] Preferably, the driving device of the return fan blades is a driving motor and a wind cup.

[0013] Preferably, the wind cup is movably arranged at the bottom of the cabin, a driving pulley is fixedly installed on the upper part of the wind cup, the driving pulley is connected to the driven pulley through a pulley, and the driven pulley is fixedly connected to the rotating shaft of the return fan blade.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention can ensure the horizontal position of the gravity offset ring by setting the gravity offset ring and the sandwich air duct inside the hub in both the rotating working state and the static state of the fan, thereby effectively preventing atmospheric precipitation from entering the hub through the setting of the S-shaped air inlet duct, thereby ensuring the normal operation of the internal connector of the hub;

[0016] 2. The present invention makes full use of wind energy to actively cool the inside of the hub, thereby reducing the energy consumption of the equipment. At the same time, when the wind power is insufficient, electricity is used to compensate for the heat dissipation, greatly improving the heat dissipation effect.

[0017] The present invention effectively prevents atmospheric precipitation from entering the interior of the hub by arranging a gravity offset ring and an internal sandwich air duct of the hub, and actively cools the interior of the hub by wind energy, thereby reducing energy consumption of the equipment, ensuring normal operation of the internal connectors of the hub, and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the wheel hub of the present invention;

[0019] Figure 2 It is a schematic diagram of the enlarged structure of the A region of the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the hub sandwich of the present invention;

[0021] Figure 4 This is a schematic diagram of the wind wheel shaft connection structure of the present invention;

[0022] Figure 5 It is a schematic diagram of the gravity offset ring connection structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the wind cup setting position of the present invention.

[0024] In the figure: 1 hub, 2 wind wheel shaft, 3 air inlet slot, 4 offset bearing, 5 gravity offset ring, 6 windward slot, 7 S-type air inlet duct, 8 air inlet hole, 9 annular air inlet slot, 10 air duct, 11 heat dissipation hole, 12 air outlet slot, 13 air outlet hole, 14 air outlet ring, 15 annular air outlet slot, 16 return air duct, 17 return air duct, 18 return fan blade, 19 cabin, 20 sealing rubber ring, 21 polyurethane layer, 22 cast lead layer, 23 wind cup. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example:

[0027] See also Figure 1-6 , the present invention provides a technical solution:

[0028] A hub ventilation and heat dissipation device comprises a hub 1, a wind wheel shaft 2 is fixedly mounted on the back side of the hub 1, an air inlet slot 3 is provided on the windward side of the hub 1, a gravity offset ring 5 is movably mounted in the air inlet slot 3 through an offset bearing 4, a windward slot 6 is provided in the gravity offset ring 5, an S-shaped air inlet duct 7 penetrating the windward slot 6 is provided on the upper part of the windward slot 6, and an air inlet hole 8 penetrating the S-shaped air inlet duct 7 is provided on the side of the rotation axis of the gravity offset ring 5;

[0029] The gravity offset ring 5 of the present invention has a uniform mass distribution due to the material filled inside. When the wheel hub 1 rotates during power generation, the gravity offset ring 5 maintains a fixed angle under the action of downward gravity. At this time, the air inlet of the S-shaped air inlet duct 7 is located at the upper part of the windward groove 6. The setting of this circuitous S-shaped air inlet duct 7 effectively prevents natural precipitation from entering the interior, ensuring that rainwater cannot normally enter during the heat dissipation process of the wheel hub 1, thereby preventing the interior of the wheel hub 1 from rusting.

[0030] The wheel hub 1 is provided with an annular air inlet groove 9, the air inlet hole 8 is connected to the annular air inlet groove 9, the annular air inlet groove 9 is connected to a plurality of air inlet ducts 10 provided in the interlayer of the wheel hub 1, and a plurality of heat dissipation holes 11 penetrating the inner space of the wheel hub 1 are provided along the plurality of air inlet ducts 10;

[0031] External air passes through the air inlet hole 8, the annular air inlet groove 9 and the air inlet duct 10, and finally enters the internal space of the hub 1 through the heat dissipation hole 11, thereby improving the air flow inside the hub 1, overcoming the problem that the air inside the traditional hub 1 does not flow, and the heat generated by external sunlight and the operation of the fan cannot be discharged in time, resulting in excessively high temperature inside the hub 1, affecting the operation safety;

[0032] An air outlet groove 12 penetrating the internal space of the hub 1 is provided at the axis center of the wind wheel shaft 2, an air outlet hole 13 penetrating the air outlet groove 12 is provided at the side of the wind wheel shaft 2, an air outlet ring 14 is provided on the outer cover of the wind wheel shaft 2, an annular air outlet groove 15 matching the air outlet hole 13 is provided in the air outlet ring 14, a return air pipe 16 is fixedly installed at the bottom of the air outlet ring 14, a return air duct 17 penetrating the annular air outlet groove 15 is provided in the return air duct 16, and a return fan blade 18 is provided in the return air duct 17.

[0033] The air entering the hub 1 enters the air outlet ring 14 through the wind wheel shaft 2 and is finally discharged into the external environment from the return air duct 16, thereby realizing the flow of gas and preventing the internal space of the hub 1 from being closed and the internal temperature from being too high due to the failure of heat to dissipate in time.

[0034] As a preferred embodiment, the wind wheel shaft 2 is fixedly installed in the cabin 19 through a bearing, the return air duct 16 is fixedly connected to the bottom of the cabin 19 at one end away from the wind wheel shaft 2, the return air duct 17 is connected to the atmospheric environment, and the return air duct 16 is fixed to the cabin 19 to ensure that the return air duct 16 does not move with the rotation of the hub 1, thereby ensuring that the heat dissipation effect is fully exerted.

[0035] As a preference, sealing rubber rings 20 are provided on the gravity offset rings 5 ​​on both sides of the air inlet 8 and the wind wheel shaft 2 on both sides of the air outlet 13. The sealing rubber rings 20 are provided to prevent gas from escaping.

[0036] As a preferred embodiment, the upper and lower sides of the gravity offset ring 5 in the horizontal tangent direction of the axis are filled with a polyurethane layer 21 and a cast lead layer 22 respectively. Through the arrangement of the polyurethane layer 21 and the cast lead layer 22, it is ensured that the mass of the lower part of the gravity offset ring 5 is much greater than that of the upper part, thereby ensuring that the gravity offset ring 5 always remains stable during rotation.

[0037] As a preferred embodiment, the driving device of the return fan blades 18 is a driving motor and a wind cup 23, which provide power for the return fan blades 18 through wind energy or electrical energy. When the external wind force is sufficient, the driving motor stops working, thereby reducing the energy consumption of the device. When the wind energy is insufficient to support the normal operation of the return fan blades 18, the driving motor is used to compensate.

[0038] As a preferred embodiment, the wind cup 23 is movably arranged at the bottom of the cabin 19 , and a driving pulley is fixedly installed on the upper part of the wind cup 23 , the driving pulley is connected to the driven pulley through a pulley belt, and the driven pulley is fixedly connected to the rotating shaft of the return fan blade 18 .

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheel hub ventilation and heat dissipation device, comprising a wheel hub (1), characterized in that: A wind wheel shaft (2) is fixedly mounted on the back side of the wheel hub (1); an air inlet groove (3) is provided on the windward side of the wheel hub (1); a gravity offset ring (5) is movably mounted in the air inlet groove (3) via an offset bearing (4); a windward groove (6) is provided in the gravity offset ring (5); an S-shaped air inlet duct (7) penetrating the rotation axis of the windward groove (6) is provided on the upper part of the windward groove (6); an air inlet hole (8) penetrating the S-shaped air inlet duct (7) is provided on the side of the rotation axis of the gravity offset ring (5); An annular air inlet groove (9) is provided in the wheel hub (1), the air inlet hole (8) is connected to the annular air inlet groove (9), the annular air inlet groove (9) is connected to a plurality of air inlet ducts (10) provided in the interlayer of the wheel hub (1), and a plurality of heat dissipation holes (11) which are connected to the internal space of the wheel hub (1) are provided along the plurality of air inlet ducts (10); An air outlet groove (12) penetrating the inner space of the hub (1) is arranged at the axis center of the wind wheel shaft (2); an air outlet hole (13) penetrating the air outlet groove (12) is arranged on the side of the wind wheel shaft (2); an air outlet ring (14) is arranged on the outer shell of the wind wheel shaft (2); an annular air outlet groove (15) cooperating with the air outlet hole (13) is arranged in the air outlet ring (14); a return air pipe (16) is fixedly installed at the bottom of the air outlet ring (14); a return air duct (17) penetrating the annular air outlet groove (15) is arranged in the return air pipe (16); and a return air fan blade (18) is arranged in the return air duct (17); The wind wheel shaft (2) is fixedly mounted in the nacelle (19) via a bearing, the return air duct (16) is fixedly connected to the bottom of the nacelle (19) at one end away from the wind wheel shaft (2), and the return air duct (17) is connected to the atmospheric environment; Sealing rubber rings (20) are provided on the gravity deflection rings (5) on both sides of the air inlet (8) and on the wind wheel shaft (2) on both sides of the air outlet (13).

2. A hub ventilation and heat dissipation device according to claim 1, characterized in that: The interior of the gravity deflection ring (5) is filled with a polyurethane layer (21) and a cast lead layer (22) respectively on the upper and lower sides in the horizontal tangent direction of the axis.

3. The wheel hub ventilation and heat dissipation device according to claim 1, characterized in that: The driving device of the return air blade (18) is a driving motor and a wind cup (23).

4. A wheel hub ventilation and heat dissipation device according to claim 3, characterized in that: The wind cup (23) is movably arranged at the bottom of the cabin (19), and a driving pulley is fixedly installed on the upper part of the wind cup (23). The driving pulley is connected to the driven pulley through a pulley belt, and the driven pulley is fixedly connected to the rotating shaft of the return fan blade (18).

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