CN214591075U - Engine exhaust gas turbine generator - Google Patents

Abstract

An engine exhaust gas turbine generator belongs to the technical field of automobile electrical appliances. The method is characterized in that: the motor shaft (11), the spacer bush (7) and the shell (1) are sequentially arranged at intervals from inside to outside, an outer stator core (5) and an outer rotor core (6) are sequentially arranged between the shell (1) and the spacer bush (7) from outside to inside, a plurality of excitation windings are arranged around the outer stator core (5), an outer armature winding (2) is further arranged on the outer stator core (5), the outer rotor core (6) is connected with the spacer bush (7), an inner rotor core (8) and an inner stator core (9) are sequentially arranged between the spacer bush (7) and the motor shaft (11) from outside to inside, an inner armature winding (10) is arranged on the inner stator core (9), and the inner rotor core (8) is connected with the inner rotor spacer bush (7). The engine exhaust gas turbine generator can be respectively suitable for different working conditions, and efficient work can be realized under different working conditions.

Description

Engine exhaust gas turbine generator

Technical Field

An engine exhaust gas turbine generator belongs to the technical field of automobile electrical appliances.

Background

The automobile industry is a mark of modern industry, is the leading industry of national economic development, plays an indispensable role in industrial and agricultural production, transportation and human production and life, converts 25-40% of total energy generated by combustion of fuel in an automobile engine cylinder into effective work, and loses the rest 60-75%, wherein the energy taken away by waste gas is 25-35%, and the recycling of the waste gas energy has important practical significance.

At present, the main way of recovering this part of the exhaust energy is to drive a generator through the exhaust turbine, so as to generate electricity through the exhaust turbine, so as to recover this part of the energy. In the prior art, the waste gas turbine drives the generator to generate electricity, the generating efficiency of the generator is low due to the limitation of the structure of the generator, various working conditions can occur during the working of the waste gas turbine, and the prior generator cannot solve the problems that the efficiency of the generator is not high and the magnetic field can not be flexibly controlled under different working conditions, so that the energy recovery rate is low.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the engine exhaust gas turbine generator overcomes the defects of the prior art, can adapt to different working conditions respectively, and can realize high-efficiency work under different working conditions.

The utility model provides a technical scheme that its technical problem adopted is: the engine exhaust gas turbine generator is characterized in that: the motor shaft, the spacer bush and the shell are sequentially arranged at intervals from inside to outside, and the spacer bush is made of a non-magnetic material;

an outer stator core and an outer rotor core are sequentially arranged between the shell and the spacer sleeve from outside to inside, a plurality of excitation windings are arranged around the outer stator core, an outer armature winding is further arranged on the outer stator core, and the outer rotor core is connected with the spacer sleeve and synchronously rotates along with the spacer sleeve;

an inner rotor iron core and an inner stator iron core are sequentially arranged between the spacer sleeve and the motor shaft from outside to inside, an inner armature winding is arranged on the inner stator iron core, and the inner rotor iron core is connected with the spacer sleeve and synchronously rotates along with the spacer sleeve.

Preferably, the outer stator core is provided with a plurality of stator teeth, a stator slot is formed between every two adjacent stator teeth, and each stator slot is internally provided with an excitation winding.

Preferably, the excitation winding comprises a main excitation winding and an auxiliary excitation winding, the main excitation winding is wound on the outer stator core, a magnetic conducting bridge is arranged in each stator slot, two ends of the magnetic conducting bridge are respectively connected with adjacent stator teeth, the auxiliary excitation winding is wound on the magnetic conducting bridge, and the directions of excitation currents conducted by the main excitation windings in every two adjacent stator slots are opposite.

Preferably, the outer stator core is formed by laminating and pressing silicon steel sheets.

Preferably, the outer rotor iron core is formed by laminating fan-shaped silicon steel sheets.

Preferably, the number of the excitation windings is an integral multiple of 6, and the number of the outer rotor cores is an integral multiple of 4.

Preferably, the inner rotor iron core is provided with a plurality of blocks, and the inner rotor iron cores are uniformly distributed around the inner wall of the spacer sleeve at intervals. The inner wall of the spacer sleeve is provided with a dovetail groove, and each inner rotor iron core is arranged on the spacer sleeve through the dovetail groove, so that the inner rotor iron cores can be conveniently arranged.

Preferably, the number of the inner rotor cores is an integral multiple of 4, and the number of poles of the inner stator core is an integral multiple of 6.

The principle of the engine exhaust gas turbine generator is as follows: in the external motor, a magnetic field generated by an excitation winding forms a closed loop after passing through a stator pole, an air gap and a rotor pole, the magnetic field in the motor changes along with the change of the angle of the rotor, the magnetic flux generated by the excitation winding is always closed along a path with the minimum magnetic resistance, the rotor is driven by mechanical energy output from the outside to continuously rotate, so that induced current is continuously generated, and the current generated by the motor is continuously output to an electric appliance through the winding. The internal generator works according to the principle of a switched reluctance generator, the power generation control system controls the on-off of a switch tube in a power switch circuit according to a rotor position signal generated by a position detector of the motor, the generation position of phase current is changed, when the axes of rotor slots coincide, the inductance is minimum, when the axes of rotor teeth coincide with the axes of corresponding stator teeth, the inductance is maximum, a current is formed in an inductance descending area to generate negative torque, the motor absorbs mechanical energy and converts the mechanical energy into electric energy to be output to an electric appliance.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

this engine exhaust gas turbine generator's spacer forms outer generator and interior generator inside and outside respectively, outer generator works according to the principle of electricity excitation generator, the generator can realize the magnetic flux and adjust, the excitation winding of generator can let in the size that the electric current of equidirectional not regulated and control whole magnetic field, the control magnetic field that can make things convenient for in a flexible way, interior generator works according to the principle of switched reluctance generator, interior generator and outer generator mutually support, can adapt to different operating modes respectively, can both realize efficient work under different operating modes.

Drawings

Fig. 1 is a schematic diagram of a structure of an engine exhaust gas turbine generator.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view of B in fig. 1.

In the figure: 1. the motor comprises a shell 2, an outer armature winding 3, an auxiliary exciting winding 4, a main exciting winding 5, an outer stator core 501, stator slots 502, stator teeth 503, a magnetic conduction bridge 6, an outer rotor core 7, a spacer 8, an inner rotor core 9, an inner stator core 10, an inner armature winding 11 and a motor shaft.

Detailed Description

Fig. 1 to 3 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 3.

The engine exhaust gas turbine generator comprises a shell 1, a spacer bush 7 and a motor shaft 11, wherein the motor shaft 11, the spacer bush 7 and the shell 1 are sequentially arranged at intervals from inside to outside, and the spacer bush 7 is made of a non-magnetic conductive material; an outer stator core 5 and an outer rotor core 6 are sequentially arranged between the shell 1 and the spacer 7 from outside to inside, a plurality of excitation windings are arranged around the outer stator core 5, an outer armature winding 2 is further arranged on the outer stator core 5, and the outer rotor core 6 is connected with the spacer 7 and synchronously rotates along with the spacer; an inner rotor iron core 8 and an inner stator iron core 9 are sequentially arranged between the spacer 7 and the motor shaft 11 from outside to inside, an inner armature winding 10 is arranged on the inner stator iron core 9, and the inner rotor iron core 8 is connected with the spacer 7 and synchronously rotates along with the spacer. This engine exhaust gas turbine generator's spacer 7 is inside and outside forms outer generator and interior generator respectively, outer generator works according to the principle of electricity excitation generator, the generator can realize the magnetic flux and adjust, the excitation winding of generator can let in the size that the electric current of equidirectional not regulated and control whole magnetic field, the control magnetic field that can make things convenient for in a flexible way, interior generator works according to the principle of switched reluctance generator, interior generator and outer generator mutually support, can adapt to different operating modes respectively, can both realize efficient work under different operating modes.

The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.

Specifically, the method comprises the following steps: as shown in FIGS. 1 to 3: the housing 1 is cylindrical, and the housing 1 is made of a non-magnetic conductive material such as copper or aluminum. The spacer 7 is coaxially arranged in the shell 1, the outer wall of the spacer 7 is arranged at an interval with the inner wall of the shell 1, and the spacer 7 is also made of a non-magnetic material. The motor shaft 11 is coaxially arranged in the spacer 7, and the motor shaft 11 and the inner wall of the spacer 7 are arranged at intervals.

An outer stator iron core 5 and an outer rotor iron core 6 are sequentially arranged between the shell 1 and the spacer 7 from outside to inside. The outer stator core 5 is fixedly connected with the shell 1, the outer stator core 5 is formed by laminating and pressing silicon steel sheets, a plurality of stator teeth 502 are uniformly distributed at intervals on the inner wall surrounding the outer stator core 5, a stator slot 501 is formed between every two adjacent stator teeth 502, a magnetic conduction bridge 503 is arranged in each stator slot 501, the magnetic conduction bridge 503 is in an arc shape coaxial with the motor shaft 11, two ends of the magnetic conduction bridge 503 are respectively connected with the middle parts of the stator teeth 502 on the corresponding side, the magnetic conduction bridge 503 is made of magnetic conduction materials, such as iron, and an outer armature winding 2 is wound on the surrounding outer stator core 5. The outer rotor iron core 6 is formed by laminating fan-shaped silicon steel sheets, the outer rotor iron core 6 is formed by splicing a plurality of blocks, a dovetail groove is formed in the outer wall of the spacer 7, and each outer rotor iron core 6 is installed on the spacer 7 through the dovetail groove and synchronously rotates along with the spacer 7.

The excitation windings comprise main excitation windings 4 and auxiliary excitation windings 3, the main excitation windings 4 and the auxiliary excitation windings 3 are respectively in one-to-one correspondence with the stator slots 501, and each auxiliary excitation winding 3 is wound on the corresponding magnetic conduction bridge 503. Each main field winding 4 is located at the bottom of a corresponding stator slot 501. The main excitation winding 4 between each two adjacent stator slots 501 is energized with opposite excitation current directions.

The number of stator slots 501 of the outer stator core 5 is integral multiple of 6, and the number of outer rotor cores 6 is integral multiple of 4.

An inner rotor iron core 8 and an inner stator iron core 9 are sequentially arranged between the spacer 7 and the motor shaft 11 from outside to inside, the inner rotor iron core 8 is formed by splicing a plurality of blocks, a dovetail groove is also arranged on the inner wall of the spacer 7, and the rotor iron cores 8 in each block are all arranged on the spacer 7 through the dovetail groove and synchronously rotate along with the spacer 7. The inner stator core 9 is coaxially installed on the motor shaft 11, and the inner armature winding 10 is wound on the band inner stator core 9.

The number of the inner rotor iron cores 8 is integral multiple of 4, and the number of poles of the inner stator iron cores 9 is integral multiple of 6.

The outer rotor iron cores 6 correspond to the inner rotor iron cores 8 one by one, the outer rotor iron cores 6 and the inner rotor iron cores 8 are divided into two types according to weight, the weight of every two adjacent outer rotor iron cores 6 is different, the outer rotor iron cores 6 with large weight and the outer rotor iron cores 6 with small weight are arranged at intervals, and the inner rotor iron cores 8 with large weight and the inner rotor iron cores 8 with small weight are arranged at intervals. And the outer rotor iron core 6 with large weight is just opposite to the inner rotor iron core 8 with small weight, so that the rotational inertia is reduced. The pole arc length of the outer rotor iron core 6 with large weight is twice the pole arc length of the outer rotor iron core 6 with small weight, the pole arc length of the inner rotor iron core 8 with large weight is twice the pole arc length of the inner rotor iron core 8 with small weight, the inner rotor iron core 8 and the outer rotor iron core 6 reduce voltage pulsation to increase power generation precision, flux linkage circulation is more stable, and the inner rotor iron core 8 and the outer rotor iron core 6 are matched to enable the rotor to rotate more stably.

When the device is used, the exhaust turbine drives the spacer bush 7 to rotate, and the shell 1 and the motor shaft 11 are fixedly installed, so that the rotation of the inner rotor iron core 8 and the outer rotor iron core 6 is realized.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (8)

1. An engine exhaust gas turbine generator characterized by: the motor comprises a shell (1), a spacer bush (7) and a motor shaft (11), wherein the motor shaft (11), the spacer bush (7) and the shell (1) are sequentially arranged at intervals from inside to outside, and the spacer bush (7) is made of a non-magnetic conducting material;

an outer stator core (5) and an outer rotor core (6) are sequentially arranged between the shell (1) and the spacer bush (7) from outside to inside, a plurality of excitation windings are arranged around the outer stator core (5), an outer armature winding (2) is further arranged on the outer stator core (5), and the outer rotor core (6) is connected with the spacer bush (7) and synchronously rotates along with the spacer bush;

an inner rotor iron core (8) and an inner stator iron core (9) are sequentially arranged between the spacer sleeve (7) and the motor shaft (11) from outside to inside, an inner armature winding (10) is arranged on the inner stator iron core (9), and the inner rotor iron core (8) is connected with the spacer sleeve (7) and synchronously rotates along with the spacer sleeve.

2. The engine exhaust gas turbine generator of claim 1, wherein: the outer stator core (5) is provided with a plurality of stator teeth (502), a stator slot (501) is formed between every two adjacent stator teeth (502), and an excitation winding is arranged in each stator slot (501).

3. The engine exhaust gas turbine generator of claim 2, wherein: the excitation winding comprises a main excitation winding (4) and an auxiliary excitation winding (3), the main excitation winding (4) is wound on the outer stator core (5), a magnetic conduction bridge (503) is arranged in each stator slot (501), two ends of the magnetic conduction bridge (503) are respectively connected with adjacent stator teeth (502), the auxiliary excitation winding (3) is wound on the magnetic conduction bridge (503), and the directions of excitation currents conducted by the main excitation windings (4) in every two adjacent stator slots (501) are opposite.

4. The engine exhaust gas turbine generator according to claim 2 or 3, characterized in that: the outer stator iron core (5) is formed by laminating and pressing silicon steel sheets.

5. The engine exhaust gas turbine generator of claim 1, wherein: the outer rotor iron core (6) is formed by laminating fan-shaped silicon steel sheets.

6. The engine exhaust gas turbine generator of claim 5, wherein: the number of the excitation windings is integral multiple of 6, and the number of the outer rotor iron cores (6) is integral multiple of 4.

7. The engine exhaust gas turbine generator of claim 1, wherein: the inner rotor iron core (8) is provided with a plurality of blocks, and the inner rotor iron cores (8) are uniformly distributed around the inner wall of the spacer sleeve (7) at intervals.

8. The engine exhaust gas turbine generator according to claim 1 or 7, characterized in that: the number of the inner rotor iron cores (8) is integral multiple of 4, and the number of poles of the inner stator iron cores (9) is integral multiple of 6.

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