CN218071122U - Marine generator - Google Patents

Abstract

The utility model belongs to the technical field of the generator, refer in particular to a marine generator, include the enclosure space of compriseing frame, front end housing, rear end cap, pivot, be equipped with the suit at the epaxial electric motor rotor of commentaries on classics and the motor stator of suit on electric motor rotor in the enclosure space, be equipped with the suit at the epaxial interior fan blade of commentaries on classics in the enclosure space, leave the clearance between electric motor rotor's outer lane and motor stator's the inner circle and form first ventiduct, be equipped with a plurality of protruding muscle that support motor stator along the axial interval in the frame, form the second ventiduct between protruding muscle and the protruding muscle, first ventiduct and second wind channel form the circulation wind channel in the enclosure space. The utility model discloses can improve the generator ventilation condition, effectively reduce the generator and heat up, extension generator life.

Description

Marine generator

The technical field is as follows:

the utility model belongs to the technical field of the generator, refer in particular to a marine generator.

Background art:

the marine generator is widely applied to various ships, and can be used as a marine power supply, a main power supply and a standby power supply. Because a ship usually runs in rivers, lakes and seas with high humidity, oil stain, dust, moisture and salt mist in a cabin enter the motor to cause the coil to be leaked and short-circuited to be burnt out, and in order to solve the defects of the traditional generator in the severe environment of the ship, a totally-closed generator is usually adopted.

Chinese utility model patent CN 205385363U discloses a totally closed generator, including frame, front end housing, rear end housing and terminal box, the front end housing with the frame is connected, the rear end housing with the frame is connected, the terminal box with the frame is connected, its characterized in that, be equipped with stator, rotor and exciter in the frame, the rotor passes through front bearing and rear bearing and is connected with front end housing and rear end housing respectively, the rotor is equipped with front shaft extension and rear shaft extension, the rear shaft extension is located the outside of rear end housing; the rear shaft is connected with a fan in an extending manner, the rear end cover is connected with a fan cover, and the fan is positioned in the fan cover; and the base is provided with heat dissipation ribs.

Although the fully-closed generator improves the moisture-proof and dust-proof performance, the stator, the rotor and the exciter are sealed in the base, and heat generated by the stator, the rotor and the exciter after long-time working is not easy to dissipate, so that the temperature of the generator is increased, and the service life of the generator is further reduced.

The invention content is as follows:

the utility model aims at providing a marine generator, it can improve the generator ventilation condition, effectively reduces the generator and heaies up, extension generator life.

The utility model discloses a realize like this:

the utility model provides a marine generator, includes the enclosure space of compriseing frame, front end housing, rear end cap, pivot, be equipped with the suit in the enclosure space and change epaxial electric motor rotor and the motor stator of suit on electric motor rotor, be equipped with the suit in the enclosure space and change epaxial fan blade, leave the clearance between electric motor rotor's outer lane and motor stator's the inner circle and form first ventiduct, be equipped with a plurality of protruding muscle that support motor stator along the axial interval in the frame, form the second ventiduct between protruding muscle and the protruding muscle, first ventiduct and second ventiduct form the circulation wind channel in the enclosure space.

In the marine generator, the convex ribs are uniformly distributed on the circumference.

In the marine generator, the closed space is also internally provided with an excitation rotor sleeved on the rotating shaft and an excitation stator sleeved on the excitation rotor, and the excitation rotor and the inner fan blade are respectively positioned on two sides of the motor rotor.

In the marine generator, the excitation rotor is located between the rear end cover and the motor rotor, and the inner fan blade is located between the front end cover and the motor rotor.

In the marine generator, the rear end cover of the rotating shaft is sleeved with an outer fan blade, and a fan cover is arranged outside the outer fan blade.

In the marine generator, the rib and the base are of an integrated structure.

In foretell marine generator, the frame is equipped with the heat dissipation muscle outward, the even setting in heat dissipation muscle interval is on the frame, and the heat dissipation muscle can be on a parallel with the radial setting of frame, also can follow the radial setting of frame.

In the marine generator, the base is provided with a lifting bolt.

In the marine generator, the marine generator further comprises an overheat protection switch installed in a coil of the motor stator, and an excitation controller controlling the excitation rotor and the excitation stator, wherein the overheat protection switch is connected in series with a power supply of the excitation controller.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model discloses the first ventiduct that forms between motor rotor and the motor stator and the second ventiduct that forms between frame and the motor stator form the circulation wind channel, and when the pivot rotated, interior fan blade rotated along with it, and the air in the enclosure circulated flow in the circulation wind channel, took away the heat that motor rotor and motor stator produced to dispel the heat through the frame, the utility model discloses can improve the interior ventilation condition of generator, effectively reduce the generator and heat up, extension generator life; a plurality of convex ribs for supporting the motor stator are arranged in the base along the axial direction, and a second air passage is formed between each convex rib and the corresponding convex rib, so that the structure is simple, and the processing and the assembly are convenient;

2. the utility model discloses an excitation rotor and interior fan blade are located the electric motor rotor both sides respectively, can dispel the heat to excitation rotor and excitation stator when taking away electric motor rotor and electric motor stator heat, effectively reduce the generator and heat up.

Description of the drawings:

fig. 1 is a half sectional view of the present invention;

fig. 2 is a cross-sectional view in another direction of the present invention;

fig. 3 is a perspective view of the base of the present invention.

Reference numerals are as follows: 1. a machine base; 2. a front end cap; 3. a rear end cap; 4. a rotating shaft; 5. a motor rotor; 6. a motor stator; 7. an inner fan blade; 8. a first air duct; 9. a rib is protruded; 10. a second ventilation channel; 11. exciting the rotor; 12. an excitation stator; 13. an outer fan blade; 14. a fan housing; 15. heat dissipation ribs; 16. an eye screw.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 3:

the utility model provides a marine generator, includes the enclosure space of compriseing frame 1, front end housing 2, rear end housing 3, pivot 4, be equipped with the suit at the epaxial motor rotor 5 of pivot 4 and the motor stator 6 of suit on motor rotor 5 in the enclosure space, be equipped with the suit at the epaxial interior fan blade 7 of pivot 4 in the enclosure space, leave the clearance between the outer lane of motor rotor 5 and motor stator 6's the inner circle and form first ventiduct 8, be equipped with a plurality of protruding muscle 9 that support motor stator along the axial interval in the frame 1, form second ventiduct 10 between protruding muscle 9 and the protruding muscle 9, first ventiduct 8 and second ventiduct 10 form the circulation wind channel in the enclosure space.

The utility model discloses a theory of operation: as shown in fig. 1-3, the first ventilation channel 8 formed between the motor rotor 5 and the motor stator 6 and the second ventilation channel 10 formed between the frame 1 and the motor stator 6 of the utility model form a circulation air channel, when the rotating shaft 4 rotates, the inner wind blade 7 rotates along with the rotation, the air in the closed space circularly flows in the circulation air channel, takes away the heat generated by the motor rotor 5 and the motor stator 6, and radiates through the frame 1, the utility model can improve the ventilation condition in the generator, effectively reduce the temperature rise of the generator, and prolong the service life of the generator; a plurality of convex ribs 9 for supporting the motor stator 6 are axially arranged in the machine base 1, and a second air passage 10 is formed between the convex ribs 9 and the convex ribs 9, so that the machine base is simple in structure and convenient to process and assemble.

For better support of the motor stator 6 and better ventilation, the ribs 9 are circumferentially distributed. In this embodiment, eight ribs 9 are evenly distributed on the circumference, and eight second ventilation channels 10 are provided.

Furthermore, an excitation rotor 11 sleeved on the rotating shaft 4 and an excitation stator 12 sleeved on the excitation rotor 11 are further arranged in the closed space, the excitation rotor 11 and the inner fan blades 7 are respectively located on two sides of the motor rotor 5, and heat of the motor rotor 5 and the motor stator 6 is taken away, and meanwhile heat of the excitation rotor 11 and the excitation stator 12 can be dissipated.

Preferably, the excitation rotor 11 is located between the rear end cover 3 and the motor rotor 5, and the inner fan blade 7 is located between the front end cover 2 and the motor rotor 5.

In order to dissipate heat of the base 1, the rear end cover 3 extending out of the rotating shaft 4 is sleeved with an outer fan blade 13, and a fan cover 14 fixed on the base 1 is arranged outside the outer fan blade 13.

For the convenience of processing the base 1 and the convex rib 9, the assembly steps are reduced, the connection firmness between the base 1 and the convex rib 9 is ensured, and the convex rib 9 and the base 1 are of an integrated structure. In the present embodiment, the housing 1 and the rib 9 are integrally formed by casting.

In order to increase the heat dissipation area of the base 1, a heat dissipation rib 15 is arranged outside the base 1. The heat dissipation ribs 15 are uniformly arranged on the base 1 at intervals, and the heat dissipation ribs 15 may be arranged in parallel with the radial direction of the base 1 (as shown in fig. 3) or arranged along the radial direction of the base 1 (as shown in fig. 1). In the present embodiment, the heat dissipating ribs 15 are radially arranged parallel to the housing 1.

In order to facilitate the movement of the utility model, the frame 1 is provided with a lifting bolt 16.

In order to protect the generator from being burnt out, the generator further comprises an overheating protection switch arranged in a coil of the motor stator 6 and an excitation controller for controlling the excitation rotor 11 and the excitation stator 12, the overheating protection switch is connected with a power supply of the excitation controller in series, when the current of the generator exceeds, the temperature of the coil of the motor stator 6 is heated to a protection value, the overheating protection switch is disconnected, the power supply of the excitation controller is cut off, the exciter is powered off, the generator stops generating electricity, and therefore the generator is protected from being burnt out.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model should be covered within the protection scope of the utility model.

Claims (7)

1. The utility model provides a marine generator, includes the enclosure space of constituteing by frame (1), front end housing (2), rear end housing (3), pivot (4), be equipped with in the enclosure space motor rotor (5) of suit on pivot (4) and motor stator (6) of suit on motor rotor (5), its characterized in that: be equipped with interior fan blade (7) of suit on pivot (4) in the enclosure space, leave the clearance between the outer lane of electric motor rotor (5) and the inner circle of motor stator (6) and form first ventiduct (8), be equipped with a plurality of protruding muscle (9) that support motor stator along axial interval in frame (1), form second ventiduct (10) between protruding muscle (9) and protruding muscle (9), first ventiduct (8) and second ventiduct (10) form the circulation wind channel in the enclosure space.

2. A marine generator according to claim 1, wherein: still be equipped with excitation rotor (11) of suit on pivot (4) and suit excitation stator (12) on excitation rotor (11) in the enclosure space, excitation rotor (11) and interior fan blade (7) are located electric motor rotor (5) both sides respectively.

3. A marine generator according to claim 2, wherein: the excitation rotor (11) is located between the rear end cover (3) and the motor rotor (5), and the inner fan blade (7) is located between the front end cover (2) and the motor rotor (5).

4. A marine generator according to claim 1, wherein: the rotating shaft (4) extends out of the rear end cover (3) and is sleeved with an outer fan blade (13), and a fan cover (14) is arranged outside the outer fan blade (13).

5. A marine generator according to claim 1, wherein: the convex rib (9) and the base (1) are of an integrated structure.

6. A marine generator according to claim 1, wherein: and a heat dissipation rib (15) is arranged outside the machine base (1).

7. A marine generator according to claim 1, wherein: the motor is characterized by further comprising an overheating protection switch arranged in a coil of the motor stator (6) and an excitation controller for controlling the excitation rotor (11) and the excitation stator (12), wherein the overheating protection switch is connected with a power supply of the excitation controller in series.

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