Special winding coated fan for generator

Abstract

The utility model relates to a special winding coated type fan for a generator, in particular to the field of generator accessory products, which comprises a coated type fan body, the coated type fan body comprises a fan side wall matched with a rotating shaft, and the fan side wall is externally connected with a plurality of equidistant hook-shaped fan blades. Hook-shaped notches are formed in the hook-shaped fan blades in the direction facing the end of the winding, the hook-shaped notches are matched with the end of the winding, the angles of the hook-shaped fan blades are different, and the end of the winding can be wrapped in the hook-shaped fan blades. According to the utility model, the conventional fan blades are changed into the hook-shaped fan blades, so that the end part of the winding can be wrapped in the hook-shaped fan blades, and the situation that just discharged hot air enters the air duct again and occupies the discharge amount is avoided; and the hook-shaped fan blades and the winding end parts are arranged in a crossed manner, so that a large internal gap of the generator caused by superposition of a plurality of parts is avoided, and the axial length of the generator can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the field of generator accessories, and in particular to a generator-specific winding-wrapped fan. Background Art

[0002] A generator is a mechanical device that converts other forms of energy into electrical energy. It is driven by a turbine, steam turbine, diesel engine or other power machinery, and converts the energy generated by water flow, air flow, fuel combustion or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electrical energy. The fan of the generator is one of the important parts of the rotor assembly. Its function is to exhaust the hot air inside the generator and guide the air flow. The rotor assembly of a traditional generator is generally a distributed structure (see attached for details). Figure 1 and 2 The existing technology in the generator), each accessory is mainly distributed on the shaft, does not cross or interfere with each other, and there is a certain gap between the accessories. Therefore, there are the following problems: 1. There is a gap between the fan and the winding, which makes it easy for the hot air discharged from the front to flow back through the gap again. When the air volume remains unchanged, the internal hot air discharge will be reduced, affecting the overall heat dissipation effect of the generator; 2. There is a certain gap between the fan and each accessory, which increases the length of the generator;

[0003] In order to solve the above problems, the utility model proposes a generator-specific winding-wrapped fan. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] The utility model aims at the above-mentioned problems in the prior art and provides a generator-specific winding-wrapped fan which can be reasonably manufactured and used in order to make up for the deficiencies of the prior art.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned technical objectives, the utility model provides a generator-specific winding-wrapped fan, including a wrapped fan body, the wrapped fan body including a fan side wall matched with a rotating shaft, the fan side wall is connected to the outside with a plurality of equally spaced hook-shaped fan blades, the hook-shaped fan blades are provided with hook-shaped grooves facing the direction of the winding end, the hook-shaped grooves are adapted to the winding end, the angles of each hook-shaped fan blade are different, and the winding end can be wrapped therein.

[0008] Preferably, a collar for matching is installed between the fan side wall and the rotating shaft, and a boss is provided inwardly of the collar, and the boss is inserted into the rotating shaft, thereby achieving a matching effect between the collar and the rotating shaft.

[0009] Preferably, reinforcing ribs are fixedly installed between the fan side wall and the collar.

[0010] Preferably, the bottoms of the plurality of hook-shaped blades are connected together with a wind shield ring, wherein the wind shield ring wraps the winding end, and the wind shield ring can block hot wind and dust blowing from below.

[0011] Preferably, the wind shield ring is provided with a reserved hole, and the reserved hole is used to install a balancing block used for dynamic balancing of the rotor.

[0012] Preferably, the fan sidewall is V-shaped and diffuses from the middle to the surroundings. Such a design can be used to guide the motor to change from axial outflow to the surroundings.

[0013] (3) Beneficial effects

[0014] The utility model improves the existing fan at the end of the winding, and changes the fan blades into hook-shaped fan blades, in which the end of the winding can be wrapped, so that the hot air just discharged will not re-enter the air duct and occupy the discharge volume; the hook-shaped fan blades and the end of the winding are cross-arranged, so that there will be no overlap of multiple components to cause a large internal gap of the generator, and the axial length of the generator can be effectively reduced; the wind shield ring is arranged at the bottom of the hook-shaped fan blade, which can not only block the air flowing from the outside of the stator, but also play a certain dust-proof role. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 It is a side view of a generator-specific winding fan in the prior art;

[0017] Figure 2 for Figure 1 Left view of

[0018] Figure 3 It is a side view of the winding-wrapped fan for generators of the utility model;

[0019] Figure 4 for Figure 3 Left view of

[0020] Figure 5 It is a side view of the hook-shaped fan blade part;

[0021] Figure 6 This is an enlarged view of the connection between the hook-shaped fan blade and other components when viewed from the front.

[0022] The accompanying drawings are marked as follows:

[0023] 1- ring, 2- fan side wall, 3- reinforcing rib, 4- hook-shaped fan blade, 5- wind shield ring, 6- reserved hole, 7- rotating shaft, 8- winding end. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-2 , is a fan used at the end of the generator winding in the prior art. It can be seen from the above assembly method that there are gaps between the windings as described in the background technology, which makes it easy for the hot air exhausted from the front to re-enter through the gaps. When the air volume remains unchanged, the internal hot air discharge will be reduced, affecting the overall heat dissipation effect of the generator; there is a certain gap between the fan and each accessory, thereby increasing the length of the generator and many other problems. For this reason, we propose an improved structure, such as the embodiment described in the embodiment.

[0026] Example:

[0027] See also Figure 3-6 As shown, a generator-specific winding-wrapped fan of the utility model includes a wrapped fan body, wherein the wrapped fan body includes a fan side wall 2 matched with a rotating shaft 7, wherein the fan side wall 2 is arranged in a V-shape, and diffuses from the middle to the surrounding areas, so that the air duct in the motor can be guided, thereby changing the axial air outlet to the surrounding air outlet, and the fan side wall 2 is connected to the outside with a plurality of equidistantly arranged hook-shaped blades 4, and the hook-shaped blades 4 are provided with hook-shaped grooves in the direction of the winding end 8, wherein the arranged hook-shaped grooves are adapted to the winding end 5, so as to achieve the effect of fully wrapping the winding end 8, and at the same time, in order to better achieve the wrapping effect, it is necessary to set the angle of each hook-shaped blade 4 to be different, and the specific setting angle will be based on the size of the winding end 8, and the angle setting that wraps but does not hinder the winding end is adopted.

[0028] In order to strengthen the connection between the rotating shaft 7 and the fan side wall 2, a matching ring 1 is installed between the fan side wall 2 and the rotating shaft 7. The ring 1 is provided with a boss in the inward direction, and the boss is inserted into the rotating shaft 7. At the same time, a reinforcing rib 3 is fixedly installed between the fan side wall 2 and the ring 1 to assist in enhancing the connection strength between the two.

[0029] In order to achieve the effect of dust prevention and wind blocking, the bottoms of the plurality of hook-shaped blades 4 are connected together with a wind shielding ring 5 , the wind shielding ring 5 wraps the winding end 8 therein, and a reserved hole 6 is provided on the wind shielding ring 5 .

[0030] Specifically, in the middle of the wrapped fan body is a collar 1 that cooperates with the rotating shaft 7, and there is a boss inside the collar 1 for fixing;

[0031] The fan side wall 2 of the wrapped fan body spreads out to form a small cone shape to guide the air duct in the motor, changing the air discharge from the axial direction to the surrounding areas;

[0032] The side fan wall 2 and the collar 1 are connected by reinforcing ribs 3; a plurality of hook-shaped blades 4 are connected to the fan side wall 1, and the hook-shaped blades 4 have different angles. The blade style is hook-shaped and is provided with hook-shaped notches, which are used to cover the stator end (i.e., the winding end 8 in the figure), so that the wrapped fan body intersects with the stator and the rotor;

[0033] A wind shield ring 5 is provided at the bottom of the hook-shaped fan blade 4 to shield the wind and dust blowing from below;

[0034] A reserved hole 6 is provided on the wind shield ring 5, and the reserved hole 6 is used for installing a balancing block (not shown in the figure) used for dynamic balancing of the rotor.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A generator-specific winding-wrapped fan, comprising a wrapped fan body, characterized in that: The wrapped fan body comprises a fan side wall (2) matched with a rotating shaft (7); the fan side wall (2) is externally connected with a plurality of hook-shaped blades (4) arranged at equal intervals; the hook-shaped blades (4) are provided with hook-shaped slots in the direction of the winding end (8); the hook-shaped slots are matched with the winding end (8); the angles of each hook-shaped blade (4) are different, and the winding end (8) can be wrapped therein.

2. A generator-specific winding-wrapped fan according to claim 1, characterized in that: A matching collar (1) is installed between the fan side wall (2) and the rotating shaft (7), and a boss is provided on the collar (1) inwardly, and the boss is inserted into the rotating shaft (7).

3. A generator-specific winding-wrapped fan according to claim 2, characterized in that: A reinforcing rib (3) is fixedly installed between the fan side wall (2) and the collar (1).

4. A generator-specific winding-wrapped fan according to any one of claims 1 to 3, characterized in that: The bottoms of the plurality of hook-shaped blades (4) are commonly connected to a wind shield ring (5), and the wind shield ring (5) wraps the winding end (8) therein.

5. A generator-specific winding-wrapped fan according to claim 4, characterized in that: The wind shield ring (5) is provided with a reserved hole (6).

6. A generator-specific winding-wrapped fan according to claim 5, characterized in that: The fan side wall (2) is arranged in a V-shape, and is arranged to spread out from the middle to the surrounding areas.

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