A connection structure between a high-speed internal combustion engine and a power frequency generator set

Abstract

This utility model relates to a connection structure between a high-speed internal combustion engine and a power frequency generator set. The connection structure includes: an engine body; a reduction mechanism, wherein the reduction mechanism is disposed on one side of the engine body and its input end is connected to the power output end of the engine body; and a generator body, wherein the input end of the generator body is connected to the output end of the reduction mechanism. The engine body and the generator body are connected by the reduction mechanism, which reduces the output speed of the generator body. By setting the reduction mechanism, the high speed generated by the engine crankshaft can be reduced by the reduction mechanism to decrease the speed of the second rotating shaft. The lower speed of the second rotating shaft drives the generator rotor, thereby achieving the purpose of a high-speed internal combustion engine driving a conventional variable frequency generator set. Under the same power output conditions, a smaller displacement internal combustion engine can be used, thus significantly reducing production costs.

Description

Technical Field

[0001] This utility model belongs to the field of generator set technology and relates to a connection structure between a high-speed internal combustion engine and a power frequency generator set. Background Technology

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. It consists of a power system, fuel system, frame system, power generation system, control system, exhaust system, etc. Variable frequency generator sets are also equipped with frequency converters.

[0003] In the past, conventional internal combustion engine-driven power frequency generator sets (excluding digital frequency conversion generator sets) used the internal combustion engine crankshaft to directly connect to the generator rotor. Therefore, the generator's power generation frequency was the same as the internal combustion engine speed. For example, taking a 50Hz generator set as an example, the 50Hz power generation frequency used an internal combustion engine speed of 3000rpm. Since the internal combustion engine speed was limited to around 3000rpm, higher speeds could not be used, thus limiting the internal combustion engine from producing higher power. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a connection structure between a high-speed internal combustion engine and a power frequency generator set.

[0005] The objective of this utility model can be achieved through the following technical solution: a connection structure between a high-speed internal combustion engine and a power frequency generator set, comprising: an engine body; a reduction mechanism, wherein the reduction mechanism is disposed on one side of the engine body and the input end of the reduction mechanism is connected to the power output end of the engine body; and a generator body, wherein the input end of the generator body is connected to the output end of the reduction mechanism, and the engine body and the generator body are connected by the reduction mechanism to reduce the output speed of the generator body.

[0006] In the above-mentioned connection structure between a high-speed internal combustion engine and a power frequency generator set, a crankcase cover is provided on one side of the engine body, and a receiving cavity for installing a reduction gear is opened on the side of the crankcase cover near the generator body.

[0007] In the above-mentioned connection structure between a high-speed internal combustion engine and a power frequency generator set, the reduction mechanism includes a first rotating shaft disposed at the output end of the engine body, a primary gear disposed on the first rotating shaft, a second rotating shaft disposed on the crankcase cover, and a secondary gear disposed on the second rotating shaft. The tooth diameter of the primary gear is smaller than that of the secondary gear, and the second rotating shaft is connected to the input end of the generator body.

[0008] In the above-mentioned connection structure between a high-speed internal combustion engine and a power frequency generator set, the primary gear and the secondary gear mesh with each other.

[0009] Compared with the prior art, this utility model, by setting a reduction mechanism, can reduce the speed of the second shaft by the high speed generated by the engine crankshaft. The generator rotor is driven by the low speed of the second shaft, thereby achieving the purpose of driving a conventional variable frequency generator set with a high-speed internal combustion engine. Under the same power generation conditions, a smaller displacement internal combustion engine can be used, thereby significantly reducing production costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the deceleration structure of this utility model.

[0011] In the diagram, 1 is the engine body; 2 is the reduction mechanism; 21 is the first shaft; 22 is the primary gear; 23 is the second shaft; 24 is the secondary gear; 3 is the crankcase cover; 4 is the housing cavity; and 5 is the generator body. Detailed Implementation

[0012] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example

[0013] like Figure 1 and Figure 2 As shown, a connection structure between a high-speed internal combustion engine and a power frequency generator set includes: an engine body 1, a reduction mechanism 2 and a generator body 5. A crankcase cover 3 is provided on one side of the engine body 1. The crankcase cover 3 has a receiving cavity 4 for installing the reduction mechanism 2 on the side near the generator body 5. The front cover of the generator body 5 is sealed to the crankcase with bolts, and a sealing gasket can be added at the connection.

[0014] The reduction mechanism 2 is located on one side of the engine body 1, and the input end of the reduction mechanism 2 is connected to the power output end of the engine body 1.

[0015] The reduction mechanism 2 includes a first shaft 21 disposed at the output end of the engine body 1, a primary gear 22 disposed on the first shaft 21, a second shaft 23 disposed on the crankcase cover 3, and a secondary gear 24 disposed on the second shaft 23. The first shaft 21 is directly connected to the camshaft on the engine body 1. The crankcase cover 3 has a through hole through which the first shaft 21 can pass, and the second shaft 23 is rotatably connected to the crankcase cover 3. A bearing is provided at the connection between the first shaft 21 and the crankcase cover 3 to reduce the friction of the second shaft 23 during rotation. The second gear is fixedly mounted on the second shaft 23 to facilitate the rotation of the second shaft 23 when the second gear rotates. The second shaft 23 is connected to the input end of the generator body 5.

[0016] In this embodiment, the tooth diameter of the primary gear 22 is smaller than that of the secondary gear 24.

[0017] In this embodiment, the primary gear 22 and the secondary gear 24 mesh with each other, with the primary gear 22 driving the secondary gear 24 to rotate.

[0018] The input end of the generator body 5 is keyed to the output end of the reduction mechanism 2, and the output speed of the generator body 5 is reduced by the reduction mechanism 2 between the engine body 1 and the generator body 5.

[0019] By setting a reduction mechanism 2, the high speed generated by the engine crankshaft can be reduced by the reduction mechanism 2 to reduce the speed of the second rotating shaft 23. The generator rotor is driven by the low speed of the second rotating shaft 23, thereby achieving the purpose of driving a high-speed internal combustion engine to drive an ordinary variable frequency generator set. Under the same power generation conditions, a smaller displacement internal combustion engine can be used, thereby significantly reducing production costs.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure between a high-speed internal combustion engine and a power frequency generator set, characterized in that, include: Engine body (1); The deceleration mechanism (2) is located on one side of the engine body (1), and the input end of the deceleration mechanism (2) is connected to the power output end of the engine body (1). The generator body (5) has its input end connected to the output end of the reduction mechanism (2). The engine body (1) and the generator body (5) are connected by the reduction mechanism (2) to reduce the output speed of the generator body (5).

2. The connection structure between a high-speed internal combustion engine and a power frequency generator set according to claim 1, characterized in that: The engine body (1) has a crankcase cover (3) on one side, and the crankcase cover (3) has a receiving cavity (4) for installing the reduction mechanism (2) on the side near the generator body (5).

3. The connection structure between a high-speed internal combustion engine and a power frequency generator set according to claim 1, characterized in that: The reduction mechanism (2) includes a first shaft (21) disposed at the output end of the engine body (1), a primary gear (22) disposed on the first shaft (21), a second shaft (23) disposed on the crankcase cover (3), and a secondary gear (24) disposed on the second shaft (23). The tooth diameter of the primary gear (22) is smaller than that of the secondary gear (24). The second shaft (23) is connected to the input end of the generator body (5).

4. The connection structure between a high-speed internal combustion engine and a power frequency generator set according to claim 3, characterized in that: The primary gear (22) meshes with the secondary gear (24).

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