Power converter device

Abstract

The utility model provides a power converter device, which relates to the technical field of aero-engine power converters and comprises a machine body shell and a power converter, an air inlet channel is fixedly mounted on the surface of the machine body shell, a mounting support plate is fixedly mounted on the surface of the machine body shell, and a nut is rotatably connected to the bottom surface of the mounting support plate. And a bolt is inserted into the mounting support plate. According to the utility model, the bolt, the power converter, the mounting support plate and the nut are arranged, so that the power converter is positioned below the air inlet channel of the airplane and is separated from an engine, and the influence of vibration on the power converter is effectively reduced; and meanwhile, the inlet air flow can take away heat generated during working, so that the influence on precise components in the power converter is reduced, a good heat dissipation effect is achieved, and the power converter is simple in structure and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine power converters, in particular to a power converter device. Background Art

[0002] The power converter unit (PCU) is used to control, regulate, and protect the aircraft engine power subsystem, and provide interfaces for other aircraft engine subsystems. Its normal operation is the basis for ensuring the normal power supply or power consumption of each aircraft engine subsystem, and it is one of the most important subsystems of aircraft engines. With the increasing demand for electricity from aircraft and engines, the power of the power converter unit (PCU) has been increasing, and has now reached several kilowatts. It carries a large number of printed circuit boards and electronic components, so shock absorption and heat dissipation are important issues that must be considered in its design process. Existing engine power converter units (PCUs) are generally installed on the engine. On the one hand, the engine will generate high temperatures when it is working, and if it is not cooled in time, it will fail. On the other hand, the engine will generate vibration when it is working. Under the influence of vibration, the electronic components in the power converter (PCU) and the plug assembly with connecting lines installed at both ends may be separated from the power converter (PCU) due to the vibration, which will cause the engine power converter (PCU) to fail. Therefore, the engine will be equipped with a shock-absorbing design for the power converter (PCU). By setting a mounting surface on the outer casing of the engine, spring sheets, sponge rubber, steel wire ropes and other elastic elements are installed on the power converter (PCU) as shock absorbers. However, this type of shock absorber is not suitable for high temperature and high vibration conditions, and setting a mounting platform on the casing will increase the weight of the engine and change the overall center of mass of the engine, increasing the difficulty of the overall structural layout. Utility Model Content

[0003] The purpose of the utility model is to solve the technical problems raised in the above background technology.

[0004] The utility model adopts the following technical scheme: a power converter device, including a body shell and a power converter, the surface of the body shell is fixedly installed with an air inlet, the surface of the body shell is fixedly installed with a mounting support plate, the bottom surface of the mounting support plate is rotatably connected with a nut, and bolts are inserted into the interior of the mounting support plate.

[0005] Preferably, the number of the bolts and nuts is six groups, and the six groups of bolts and nuts are symmetrically distributed on both sides of the mounting support plate. Here, the multiple groups of symmetrical design of bolts and nuts can firmly fix the power converter on the surface of the mounting support plate, thereby effectively reducing the impact of engine vibration.

[0006] Preferably, the bolt is rotatably connected to the power converter. Here, the rotatably connected design of the bolt and the power converter facilitates the installation of the power converter.

[0007] Preferably, the bolt and the nut are connected by threads. Here, the threaded connection design of the bolt and the nut has the effect of fixing the power converter and the mounting support plate.

[0008] Preferably, the two sides of the power converter are attached to the inner surface of the housing. Here, the spatial structural design of the power converter, the air intake duct and the housing allows the intake airflow to dissipate heat for the power converter while also reducing the impact of engine vibration, thus ensuring the normal operation of its internal precision components.

[0009] Compared with the prior art, the advantages and positive effects of the utility model are:

[0010] 1. In the utility model, by arranging bolts, a power converter, a mounting support plate and nuts, the power converter is located below the aircraft air inlet and separated from the engine, thereby effectively reducing the impact of vibration on it; at the same time, the intake airflow will take away the heat generated during its operation, reducing the impact on the precision components inside the power converter, achieving a good heat dissipation effect, and the structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A three-dimensional structural diagram of a power converter device proposed by the utility model;

[0012] Figure 2 The utility model provides a schematic diagram of the explosion structure of a bolt in a power converter device.

[0013] Legend:

[0014] 1. Air inlet; 2. Body shell; 3. Bolts; 4. Power converter; 5. Mounting support plate; 6. Nuts. DETAILED DESCRIPTION

[0015] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0017] Example

[0018] See also Figure 1-2 The utility model provides a technical solution: a power converter device, including a body shell 2 and a power converter 4, both sides of the power converter 4 are attached to the inner surface of the body shell 2, the spatial structural design of the power converter 4, the air intake duct 1 and the body shell 2 plays a role in allowing the intake airflow to dissipate heat for the power converter 4 while also reducing the impact of engine vibration, thereby ensuring the normal operation of its internal precision components, the surface of the body shell 2 is fixedly installed with the air intake duct 1, the surface of the body shell 2 is fixedly installed with a mounting support plate 5, the bottom surface of the mounting support plate 5 is rotatably connected with a nut 6, and the interior of the mounting support plate 5 is inserted with a bolt 3 The bolt 3 and the nut 6 are connected by a thread, and the threaded connection design of the bolt 3 and the nut 6 has the effect of fixing the power converter 4 and the mounting support plate 5. The bolt 3 and the power converter 4 are rotationally connected, and the rotational connection design of the bolt 3 and the power converter 4 has the effect of facilitating the installation of the power converter 4. The number of bolts 3 and nuts 6 is six groups, and the six groups of bolts 3 and nuts 6 are symmetrically distributed on both sides of the mounting support plate 5. The multiple groups of symmetrical design of bolts 3 and nuts 6 have the effect of firmly fixing the power converter 4 on the surface of the mounting support plate 5, thereby effectively reducing the impact of engine vibration.

[0019] Working principle: When installing the power converter 4, just place the power converter 4 on the surface of the mounting support plate 5, insert the bolt 3 into the inside of the power converter 4 and the mounting support plate 5, and then turn the bolt 3 to fix the bolt 3 and the nut 6 through the thread. After the bolt 3 and the nut 6 are fixed, the power converter 4 can be fixed. The bolt 3, the power converter 4, the mounting support plate 5 and the nut 6 make the power converter 4 located below the aircraft air inlet 1 and separated from the engine, thereby effectively reducing the impact of vibration on it; at the same time, the intake airflow will take away the heat generated during its operation, reduce the impact on the precision components inside the power converter 4, and achieve a good heat dissipation effect.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A power converter device, comprising a housing (2) and a power converter (4), characterized in that: An air inlet (1) is fixedly mounted on the surface of the machine body shell (2), a mounting support plate (5) is fixedly mounted on the surface of the machine body shell (2), a nut (6) is rotatably connected to the bottom surface of the mounting support plate (5), and a bolt (3) is inserted into the interior of the mounting support plate (5).

2. The power converter device according to claim 1, wherein: The number of the bolts (3) and nuts (6) is six groups, and the six groups of bolts (3) and nuts (6) are symmetrically distributed on both sides of the mounting support plate (5).

3. The power converter device according to claim 1, wherein: The bolt (3) is rotationally connected to the power converter (4).

4. The power converter device according to claim 1, wherein: The bolt (3) and the nut (6) are connected via threads.

5. The power converter device according to claim 1, wherein: Two sides of the power converter (4) are attached to the inner surface of the machine body shell (2).

Images