Aircraft engine EMU airborne monitoring device

Abstract

The utility model provides an aero-engine EMU airborne monitoring device. The aero-engine EMU airborne monitoring device comprises a casing, an EMU electronic component board card, a heat conduction block and a first electric connector. The machine shell comprises a box body and an upper cover, and the upper cover is assembled on the box body; the EMU electronic component board card is arranged in the box body; the heat conduction block is arranged in the machine shell and located between the EMU electronic component board card and the inner wall of the machine shell, the upper surface and the lower surface of the heat conduction block are attached to a heating component on the EMU electronic component board card and the inner wall of the machine shell respectively, and the heat conduction block is used for conducting heat generated by the EMU electronic component board card to the machine shell. And the first electric connector is arranged on the side wall of the box body and is electrically connected with the EMU electronic component board card. Compared with the prior art, the airborne monitoring device for the EMU of the aero-engine provided by the utility model has the advantages that the overall weight can be reduced, the weight index can be better met, and the airborne monitoring device has good heat dissipation capability.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation equipment, in particular to an aviation engine EMU airborne monitoring device. Background Art

[0002] The application environment of aviation electronic equipment is harsh, and usually requires electronic equipment to have sealing ability, three-proof ability, vibration resistance and high temperature resistance. Weight is a relatively important indicator for aviation electronic equipment. Under some external installation interface restrictions, it is difficult for aviation electronic equipment to meet and have sealing ability, impact and vibration resistance, high temperature resistance and three-proof ability under the condition of compact structure.

[0003] Due to the complex structure of aircraft engines, mechanical failures are often difficult to detect during early operation, which can easily cause safety hazards. In response to this, in new engines, engineers set up an engine health monitoring unit (EMU) to complete data analysis, fault alarms, and data and fault recording with a high-performance embedded computer. The data recorded by the EMU can be downloaded to ground equipment to provide a more in-depth analysis of the engine health status, making maintenance and troubleshooting more timely and fault location more accurate. However, as an electronic working device, the EMU will generate a lot of heat due to the electrothermal effect during operation, which will increase its own temperature and reduce the working reliability and life of the EMU.

[0004] In the prior art, in terms of heat dissipation of the EMU, liquid cooling or air cooling design is usually added to increase the heat dissipation capacity of the casing. However, this method requires additional liquid cooling structure or air cooling structure, which requires increasing the size and thickness of the casing, causing the weight of the casing to increase, resulting in the overall weight index of the EMU not meeting the standard. In terms of sealing, the size of the casing needs to be increased, and the sealing capacity of the casing needs to be increased, which will also cause the weight index to not meet the standard. The weight index is a relatively important index in aviation airborne electronic equipment, and the weight index cannot be sacrificed for other indicators.

[0005] Therefore, how to provide a new aircraft engine EMU airborne monitoring device that can better meet the weight index and also have a good heat dissipation effect is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0006] To solve the above technical problems, the utility model provides an airborne monitoring device for an aero-engine EMU. A heat conduction block is arranged between the EMU electronic components and the casing. The heat generated by the electronic components can be guided to the casing through the heat conduction block, and the heat of the casing exchanges heat with the air in the external environment through the surface of the casing, so as to achieve heat dissipation. The heat dissipation effect is good, and there is no need to additionally increase a liquid cooling structure or an air cooling structure, which reduces the overall weight and can better meet the weight index.

[0007] An airborne monitoring device for an aero-engine EMU, which comprises a casing, an EMU electronic component board, a heat conduction block, and a first electrical connector;

[0008] The casing comprises a box body and an upper cover, and the upper cover is assembled on the box body;

[0009] The EMU electronic component board is arranged in the box body;

[0010] The heat conduction block is arranged in the casing and is located between the EMU electronic component board and the inner wall of the casing. The upper and lower surfaces of the heat conduction block are respectively attached to the heat generating components on the EMU electronic component board and the inner wall of the casing, so as to conduct the heat generated by the EMU electronic component board to the casing;

[0011] The first electrical connector is arranged on the side wall of the box body and is electrically connected to the EMU electronic component board.

[0012] Preferably, the heat conduction block comprises an upper heat conduction block and a lower heat conduction block;

[0013] The upper heat conduction block is located between the inner wall of the top end of the upper cover and the upper surface of the EMU electronic component board; the shape of the upper heat conduction block is adapted to the shape of the upper surface of the EMU electronic component board and the inner wall of the top end of the upper cover, so as to ensure that the upper and lower surfaces of the upper heat conduction block are respectively attached to the inner wall of the top end of the upper cover and the surfaces of the heat generating components on the upper surface of the EMU electronic component board;

[0014] The lower heat conduction block is located between the inner wall of the bottom surface of the box body and the lower surface of the EMU electronic component board; the shape of the lower heat conduction block is adapted to the shape of the lower surface of the EMU electronic component board and the inner wall of the bottom surface of the box body, so as to ensure that the upper and lower surfaces of the lower heat conduction block are respectively attached to the inner wall of the bottom surface of the box body and the surfaces of the heat generating components on the lower surface of the EMU electronic component board.

[0015] Preferably, heat conduction pads are arranged between the upper and lower surfaces of the heat conduction block and the inner wall of the casing and / or between the upper and lower surfaces of the heat conduction block and the upper and lower surfaces of the heat generating components on the EMU electronic component board.

[0016] Preferably, a plurality of heat dissipation rib strips are provided on the outer surface of the casing.

[0017] Preferably, the lower heat conduction block is fixedly arranged in the box body; the EMU electronic component board is fixedly arranged on the lower heat conduction block, and the upper heat conduction block is fixedly arranged on the EMU electronic component board.

[0018] Preferably, the EMU electronic component board includes at least two printed circuit boards; the printed circuit boards are electrically connected and stacked vertically;

[0019] The lower heat conduction block is fixedly installed in the box body by screws; the lowermost printed circuit board is fixedly installed on the lower heat conduction block by copper columns and screws; the upper printed circuit boards are fixedly installed on the lower printed circuit board by copper columns and screws; the upper heat conduction block is fixedly installed on the uppermost printed circuit board by screws.

[0020] Preferably, a cache card is further included. A cache card installation port is provided on the side wall of the upper cover, and the cache card is detachably installed in the upper cover; a first circuit board is provided in the upper cover, and the first circuit board is electrically connected to the EMU electronic component board; a second electrical connector is provided on the cache card and is connected to the first circuit board through the second electrical connector.

[0021] Preferably, at least two reinforcing ribs are provided on the inner wall of the top end of the upper cover. A guiding groove is provided on the side wall of the reinforcing rib, and the guiding groove extends to the cache card installation port; the cache card includes a second circuit board and a cache card housing arranged outside the second circuit board. Guiding strips are provided on two outer side walls of the cache card housing and are detachably connected to the guiding groove; the second electrical connector is arranged on the cache card housing and is electrically connected to the second circuit board; the first circuit board is electrically connected to the EMU electronic component board through a flexible circuit board.

[0022] Preferably, shock absorbers are provided at the end corners of the casing.

[0023] Preferably, the box body and the upper cover are integrally formed by processing a plate member.

[0024] Preferably, a sealing groove is provided at the connection between the upper cover and the box body, and a conductive rubber strip is arranged in the sealing groove; a conductive rubber pad is arranged between the first electrical connector and the box body.

[0025] Compared with the prior art, the airborne monitoring device of the aero-engine EMU provided by the utility model comprises a casing, an EMU electronic component board, a heat conducting block, and a first electrical connector; the casing comprises a box body and an upper cover, and the upper cover is assembled on the box body; the EMU electronic component board is arranged in the box body; the heat conducting block is arranged in the casing and is located between the EMU electronic component board and the inner wall of the casing, and the upper and lower surfaces of the heat conducting block are respectively attached to the heat generating components on the EMU electronic component board and the inner wall of the casing, so as to conduct the heat generated by the EMU electronic component board to the casing; the first electrical connector is arranged on the side wall of the box body and is electrically connected to the EMU electronic component board. In the airborne monitoring device of the aero-engine EMU, the heat conducting block is arranged between the casing and the EMU electronic components, so that the heat generated by the EMU electronic components can be conducted to the casing through the heat conducting block, and the heat of the casing exchanges heat with the air in the external environment through the surface of the casing, thereby realizing heat dissipation. The heat dissipation effect is good, and there is no need to additionally increase a liquid cooling structure or an air cooling structure, which reduces the overall weight and can better meet the weight index. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application, and those of ordinary skill in the art can obtain other drawings without creative efforts based on these drawings.

[0027] Figure 1 FIG. 9 is a schematic perspective view of the airborne monitoring device of the aero-engine EMU provided by an embodiment;

[0028] Figure 2 FIG. Figure 1 FIG. 15 is an exploded structural schematic view of the airborne monitoring device of the aero-engine EMU shown in FIG.

[0029] Figure 3 FIG. 19 is a schematic cross-sectional view of the airborne monitoring device of the aero-engine EMU provided by an embodiment;

[0030] Figure 4 FIG. Figure 1 FIG. 25 is a schematic perspective view of the box body and the upper cover shown in FIG.

[0031] Figure 5 FIG. Figure 4 FIG. 31 is a schematic perspective view of the box body shown in FIG.

[0032] Figure 6 FIG. Figure 4 FIG. 37 is a schematic perspective view of the upper cover shown in FIG.

[0033] Figure 7 is Figure 1 a schematic three-dimensional structure diagram of the cache card shown. Specific embodiments

[0034] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0035] It should be noted that when a component is referred to as being "fixed to", "mounted on", or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0036] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meanings of "a plurality" and "several" are two or more, unless otherwise specifically and clearly defined.

[0038] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions that this application can be implemented. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0039] The utility model provides an airborne monitoring device for an aero-engine EMU, which comprises a casing, an EMU electronic component board, a heat conducting block and a first electrical connector; the casing comprises a box body and an upper cover, and the upper cover is assembled on the box body; the EMU electronic component board is arranged in the box body; the heat conducting block is arranged in the casing and is located between the EMU electronic component board and the inner wall of the casing, and the upper and lower surfaces of the heat conducting block are respectively attached to the heat generating components on the EMU electronic component board and the inner wall of the casing, so as to conduct the heat generated by the EMU electronic component board to the casing; the first electrical connector is arranged on the side wall of the box body and is electrically connected with the EMU electronic component board. In the airborne monitoring device for the aero-engine EMU, the heat conducting block is arranged between the casing and the EMU electronic components, so that the heat generated by the EMU electronic components can be conducted to the casing through the heat conducting block, and the heat of the casing exchanges heat with the air in the external environment through the surface of the casing, thereby realizing heat dissipation. The heat dissipation effect is good, and there is no need to additionally increase a liquid cooling structure or an air cooling structure, which reduces the overall weight and can better meet the weight index.

[0040] Please refer to Figures 1 to 7 for reference. This embodiment provides an airborne monitoring device 100 for an aero-engine EMU, which is mainly used to solve the problem in the prior art that due to considering heat dissipation, a liquid cooling or air cooling structure needs to be added to the chassis, resulting in an overweight overall weight index and affecting the use. The airborne monitoring device 100 for the aero-engine EMU provided in this embodiment adopts the natural heat dissipation method, and exchanges heat with the air in the external environment through the surface of the casing, thereby realizing heat dissipation, which can better meet the overall weight index and has a good heat dissipation effect at the same time.

[0041] The airborne monitoring device 100 of the aero-engine EMU includes a casing 10, an EMU electronic component board 20, a heat conduction block 30, and a first electrical connector 50. The casing 10 includes a box body 11 and an upper cover 12. The upper cover 12 is assembled on the box body 11. The EMU electronic component board 20 is disposed inside the casing 10. The heat conduction block 30 is disposed inside the casing 10 and is located between the EMU motor component board 20 and the inner wall of the casing 10. The upper and lower surfaces of the heat conduction block 30 are respectively in contact with the heat-generating components on the EMU electronic component board 20 and the inner wall of the casing 10. The heat conduction block 30 is used to conduct the heat generated by the EMU electronic component board 20 to the casing 10. The first electrical connector 50 is disposed on the side wall 112 of the box body 11 and is electrically connected to the EMU electronic component board 20. Among them, the heat conduction block 30 refers to a component with good heat conduction performance. Since the heat conduction block 30 is in contact with the EMU electronic component board 20 and the casing 10 respectively, when the EMU electronic component board 20 generates heat during operation, the heat can be conducted to the casing 10 through the heat conduction block 30, and the heat of the casing 10 exchanges heat with the air in the external environment through the surface of the casing 10, so as to transfer the heat generated by the EMU electronic component board 20 to the external environment, realizing heat dissipation, and dissipating the heat generated by the EMU electronic component board 20 in a natural heat dissipation manner.

[0042] It can be understood that in the prior art, the heat dissipation method adopted by the EMU is usually to add a liquid cooling structure or an air cooling structure to dissipate heat in the form of liquid cooling or air cooling. Although this method can solve the heat dissipation problem of the EMU to a certain extent, it is necessary to additionally install a liquid cooling structure or an air cooling structure in the casing, which requires increasing the size of the casing, increasing the thickness of the casing, resulting in an increase in the weight of the casing, increasing the overall weight, and causing the overall weight index of the EMU to fail to meet the standard. And the weight index is a relatively important index in airborne electronic equipment of aircraft, and the weight index cannot be sacrificed for other indexes. And in terms of sealing, it is also necessary to increase the size of the casing and increase the sealing ability of the casing, but it will also cause the weight index to fail to meet the standard.

[0043] In the aero-engine EMU airborne monitoring device 100 provided in this embodiment, the heat conduction block 30 is arranged in the casing 10 and contacts the EMU electronic component board 20 and the casing 10 respectively through the heat conduction block 30, so as to conduct the heat of the EMU electronic component board 20 to the casing 10, and perform heat exchange with the air in the external environment through the casing 10, and the overall structure is simpler. In the aero-engine EMU airborne monitoring device 100, there is no need to additionally set an air-cooling structure or a liquid-cooling structure, there is no need to additionally increase the size of the casing 10 to adapt to the air-cooling structure or the liquid-cooling structure, and there is no need to additionally increase the thickness of the casing 10, so that the weight of the casing 10 is lighter, and the aero-engine EMU airborne monitoring device 100 can better meet the weight index. And in terms of sealing, since there is no need to additionally increase the size of the casing 10, the required sealing ability of the casing 10 is reduced, and the number of seals required in the casing 10 is also less. Similarly, the overall weight of the aero-engine EMU airborne monitoring device 100 can be made lighter, and the weight index can be better met.

[0044] Preferably, in one embodiment, the casing 10 only includes the box body 11 and the upper cover 12. That is to say, the casing 10 is only composed of two parts, namely the box body 11 and the upper cover 12. Thus, on the premise of ensuring assembly, strength, etc., the types of parts are reduced as much as possible, the accessories such as screws and spring washers required for part assembly are reduced, the weight caused by the accessories is indirectly reduced, and the weight impact brought by the assembly is reduced. And in terms of sealing, only the box body 11 and the upper cover 12 need to be designed for sealing, and the number of sealing positions is small, which also reduces the size required for the sealing design from the side, so as to minimize the size of the casing 10 as much as possible, and at the same time reduce the number of seals, thereby reducing the weight impact brought by the sealing.

[0045] Specifically, in one embodiment, the upper cover 12 is installed on the box body 11 through screws, spring washers and flat washers.

[0046] Specifically, in one embodiment, the casing 10 adopts a frame structure.

[0047] Preferably, in one embodiment, the heat conducting block 30 includes an upper heat conducting block 31 and a lower heat conducting block 32. The upper heat conducting block 31 is located between the inner wall at the top end of the upper cover 12 and the upper surface of the EMU electronic component board 20; and the shape of the upper heat conducting block 31 is adapted to the shape of the upper surface of the EMU electronic component board 20 and the inner wall at the top end of the upper cover 12, so as to ensure that the upper and lower surfaces of the upper heat conducting block 31 are respectively in contact with the inner wall at the top end of the upper cover 12 and the surfaces of the heat generating components on the upper surface of the EMU electronic component board 20. The heat dissipated by the high-power heat generating components on the EMU electronic component board 20 is conducted to the upper cover 12 through the upper heat conducting block 31, and then the heat exchanges heat with the air in the external environment through the surface of the upper cover 12, so as to transfer the heat generated by the high-power heat generating components on the EMU electronic component board 20 to the external environment. The lower heat conducting block 32 is located between the inner wall 111 at the bottom of the box body 11 and the lower surface of the EMU electronic component board 20, and the shape of the lower heat conducting block 32 is adapted to the shape of the lower surface of the EMU electronic component board 20 and the inner wall 111 at the bottom of the box body 11, so as to ensure that the upper and lower surfaces of the lower heat conducting block 32 are respectively in contact with the inner wall 111 at the bottom of the box body 11 and the surfaces of the heat generating components on the lower surface of the EMU electronic component board 20. The heat dissipated by the high-power heat generating components on the EMU electronic component board 20 is conducted to the box body 11 through the lower heat conducting block 32, and then the heat exchanges heat with the air in the external environment through the surface of the box body 11, so as to transfer the heat generated by the high-power heat generating components on the EMU electronic component board 20 to the external environment. Through this structure, the heat dissipation efficiency and the heat dissipation effect can be further improved.

[0048] Preferably, in one embodiment, a heat-conducting pad is provided between the upper and lower surfaces of the heat-conducting block 30 and the inner wall of the chassis 10 and / or between the upper and lower surfaces of the heat-conducting block 30 and the heat-generating components on the EMU electronic component board 20. That is to say, in this embodiment, the heat-conducting pad is also provided. By means of the heat-conducting pad, the heat-conducting capacity can be improved, and the heat of the EMU electronic component board 20 can be conducted to the chassis 10 better. The heat-conducting pad can be provided between the heat-conducting block 30 and the chassis 10 to increase the heat-conducting capacity between the heat-conducting block 30 and the chassis 10; or, the heat-conducting pad can be provided between the heat-conducting block 30 and the EMU electronic component board 20 to increase the heat-conducting capacity between the heat-conducting block 30 and the EMU electronic component board 20; or, the heat-conducting pad can be provided between the heat-conducting block 30 and the chassis 10 and between the heat-conducting block 30 and the EMU electronic component board 20 to increase the heat-conducting capacity between the heat-conducting block 30 and the EMU electronic component board 20 and between the heat-conducting block 30 and the chassis 10. It can be understood that, in the actual production process, due to the influence of factors such as machining and assembly tolerances, there will be a certain gap between the heat-conducting block 30 and the chassis 10 or the EMU electronic component board 20, and a certain gap will be reserved between the heat-conducting block 30 and the chassis 10 in the design process, and the heat-conducting pad can be filled in the gap to improve the heat dissipation effect.

[0049] Preferably, in one embodiment, a plurality of heat dissipation ribs are provided on the outer surface of the chassis 10. By providing the heat dissipation ribs, the heat dissipation area of the outer surface of the chassis 10 can be increased, thereby further improving the heat dissipation effect. Specifically, in one embodiment, many of the heat dissipation ribs are designed on the outer surface of the lower part of the box body 11, and many of the heat dissipation ribs are designed on the outer surface of the upper cover 12, increasing the heat dissipation area of the outer surface of the upper cover 12. It can be understood that, in the structural design of the box body 11 and the upper cover 12, as many heat dissipation ribs as possible can be designed, and under the condition of ensuring the strength and heat dissipation capacity, the redundant materials can be removed as much as possible to reduce the weight.

[0050] Preferably, in one embodiment, the lower heat conducting block 32 is fixedly arranged in the box body 11, the EMU electronic component board 20 is fixedly arranged on the lower heat conducting block 32, and the upper heat conducting block 31 is fixedly arranged on the EMU electronic component board 20. That is, in this embodiment, the lower heat conducting block 32 can serve as the installation structure of the EMU electronic component board 20, thereby increasing the strength and vibration resistance of the EMU electronic component board 20. The EMU electronic component board 20 can serve as the installation structure of the upper heat conducting block 31, thereby increasing the strength and vibration resistance of the upper heat conducting block 31.

[0051] Preferably, in one embodiment, the EMU electronic component board 20 includes at least two printed circuit boards, which are electrically connected and stacked vertically. The lower heat conducting block 32 is fixedly installed in the box body 11 by screws 70, and the lowermost printed circuit board is fixedly installed on the lower heat conducting block 32 by copper columns 80 and screws 70. Between two adjacent layers of the printed circuit boards, the upper printed circuit board is fixedly installed on the lower printed circuit board by copper columns 80 and screws 70. The upper heat conducting block 31 is fixedly installed on the uppermost printed circuit board by screws 70. Through this structure, the connection reliability between components can be further ensured, and the heat dissipation effect can be better improved.

[0052] Specifically, in one embodiment, the EMU electronic component board 20 includes two printed circuit boards. Among the two printed circuit boards, the lower one is the digital board 22, and the upper one is the power board 21. Of course, in other embodiments, the two printed circuit boards can also adopt other functional boards. Moreover, in other embodiments, the number of printed circuit boards included in the EMU electronic component board 20 can be more. In this embodiment, only the digital board 22 and the power board 21 are taken as examples for illustration. Specifically, the upper heat conducting block 31 is connected between the power board 21 and the upper cover 12, so that heat is conducted to the upper cover 12 through the upper heat conducting block 31, and heat dissipation is carried out through the upper cover 12. The lower heat conducting block 32 is connected between the digital board 22 and the box body 11, so that heat is conducted to the box body 11 through the lower heat conducting block 32, and heat dissipation is carried out through the box body 11.

[0053] Further, there are certain gaps designed between the upper heat conducting block 31 and the high-power consumption heat generating components of the power supply board 21, as well as between the upper heat conducting block 31 and the upper cover 12. Such gaps can be filled by pasting the heat conducting pads, thereby reducing the assembly gap, decreasing the thermal resistance, and increasing the heat conducting capacity. Further, there are certain gaps designed between the lower heat conducting block 32 and the high-power consumption heat generating components of the digital board 22, as well as between the lower heat conducting block 32 and the box body 11. Such gaps can be filled by pasting the heat conducting pads, thereby reducing the assembly gap, decreasing the thermal resistance, and increasing the heat conducting capacity.

[0054] Among them, except for the necessary strength consideration and the structure consideration for fitting with the chip in the structures of the upper heat conducting block 31 and the lower heat conducting block 32, the rest of the parts are designed to remove the redundant materials through processing, so as to minimize the weight of the heat conducting block 30.

[0055] Specifically, in one embodiment, the heat conducting pad is made of a heat conducting silica gel pad.

[0056] Specifically, both the upper heat conducting block 31 and the lower heat conducting block 32 are in a plate-like structure.

[0057] Specifically, in one embodiment, spring washers and flat washers can also be arranged between the power supply board 21 and the digital board 22, between the digital board 22 and the lower heat conducting block 32, and between the lower heat conducting block 32 and the box body 11.

[0058] Preferably, in one embodiment, shock absorbers 40 are arranged at the end corners of the casing 10. By arranging the shock absorbers 40, the overall anti-vibration performance of the aero-engine EMU airborne monitoring device 100 can be increased. Specifically, in one embodiment, the shock absorbers 40 are arranged at the four end corners of the casing 10. Specifically, in one embodiment, the shock absorbers 40 are screwed onto the end corners of the box body 11 through their own threads.

[0059] Preferably, in one embodiment, the box body 11 and the upper cover 12 are integrally formed by processing a plate member, so as to increase the strength of the parts. Specifically, both the box body 11 and the upper cover 12 are integrally formed by processing a thick plate. The wall thickness of the casing 10 is large, having good supporting ability, so that the casing 10 has good strength and impact resistance. More specifically, in one embodiment, for the fixation of the internal printed circuit board card, the copper posts and screws fixation method can be adopted; the fixation between the heat conducting block and the box body can be carried out by using the installation posts and screws. The posts on the installation structures such as the box body 11, the upper cover 12, the upper heat conducting block 31, and the lower heat conducting block 32 can all be integrally formed during the thick plate processing, rather than using other methods such as press riveting and stud connection, so as to further ensure the strength of the parts.

[0060] Preferably, in one embodiment, a sealing groove 13 is provided at the connection between the upper cover 12 and the box body 11, and a conductive rubber strip is provided in the sealing groove 13. Assembly sealing is performed through the conductive rubber strip, which not only plays a sealing role but also increases the overall electrical conductivity of the casing 10 and enhances the electromagnetic shielding ability of the casing 10. Specifically, in one embodiment, the sealing grooves 13 are provided on both the upper cover 12 and the box body 11. Specifically, in one embodiment, the conductive rubber strip is a conductive rubber strip. Specifically, in one embodiment, the sealing groove 13 on the box body 11 is recessed from the top of the side wall 112.

[0061] Preferably, in one embodiment, a conductive rubber pad is provided between the first electrical connector 50 and the box body 11. Specifically, the conductive rubber pad is provided between the assembly contact surfaces of the first electrical connector 50 and the box body 11. The provision of the conductive rubber pad can enhance the electromagnetic shielding ability of the casing 10.

[0062] Specifically, in one embodiment, the first electrical connector 50 is assembled on the box body 11 by screws.

[0063] Preferably, in one embodiment, the aero-engine EMU airborne monitoring device 100 further includes a cache card 60. An installation opening 121 for the cache card is provided on the side wall of the upper cover 12, and the cache card 60 is detachably installed inside the upper cover 12. A first circuit board is provided inside the upper cover 12, and the first circuit board is electrically connected to the EMU electronic component board 20. The cache card 60 is provided with a second electrical connector and is connected to the first circuit board through the second electrical connector. Among them, the cache card 60 is a component for data storage and download.

[0064] Preferably, in one embodiment, at least two reinforcing ribs 122 are provided on the inner wall of the top end of the upper cover 12. A guiding groove 123 is provided on the side wall of the reinforcing rib 122, and the guiding groove 123 extends to the installation opening 121 for the cache card; the cache card 60 includes a second circuit board and a cache card housing 61 provided outside the second circuit board. Guiding strips 62 are provided on both outer side walls of the cache card housing 61 and are detachably connected to the guiding groove 123; the second electrical connector is provided on the cache card housing 61 and is electrically connected to the second circuit board; the first circuit board is electrically connected to the EMU electronic component board 20 through a flexible circuit board. This can facilitate the insertion and removal of the cache card 60.

[0065] Specifically, in one embodiment, the cache card 60 is assembled on the upper cover 12 through the guiding groove 123 and is fixed using screws, spring washers and flat washers at the same time.

[0066] Preferably, in one embodiment, the housing 10 is a 6061 aluminum alloy housing. That is, the housing 10 is made of Al6061, which can reduce material costs and has good material density and processing performance.

[0067] The aircraft engine EMU airborne monitoring device 100 adopts a natural heat dissipation method. Under the limitation of weight and external installation interface, the device structure is compact, and the heat dissipation capacity can be well guaranteed to ensure that the EMU can work normally. In addition, fewer sealing positions are required, which can better ensure the sealing capacity. It has the characteristics of lightweight and compact structure, and has good sealing, impact resistance, vibration resistance, high temperature resistance and three-proof capabilities.

[0068] The above is only an implementation method of the present invention. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the protection scope of the present invention.

Claims

1. An airborne monitoring device for an aero-engine EMU, characterized in that, It includes a housing, an EMU electronic component board, a heat conduction block, and a first electrical connector; The housing includes a box body and an upper cover, and the upper cover is assembled on the box body; The EMU electronic component board is arranged inside the box body; The heat conduction block is arranged inside the housing and is located between the EMU electronic component board and the inner wall of the housing. The upper and lower surfaces of the heat conduction block are respectively attached to the heat generating components on the EMU electronic component board and the inner wall of the housing, so as to conduct the heat generated by the EMU electronic component board to the housing; The first electrical connector is arranged on the side wall of the box body and is electrically connected to the EMU electronic component board.

2. The airborne monitoring device of the aero-engine EMU according to claim 1, wherein The heat conduction block includes an upper heat conduction block and a lower heat conduction block; The upper heat conduction block is located between the inner wall of the top end of the upper cover and the upper surface of the EMU electronic component board; the shape of the upper heat conduction block is adapted to the shape of the upper surface of the EMU electronic component board and the inner wall of the top end of the upper cover, so as to ensure that the upper and lower surfaces of the upper heat conduction block are respectively attached to the inner wall of the top end of the upper cover and the surface of the heat generating components on the upper surface of the EMU electronic component board; The lower heat conduction block is located between the inner wall of the bottom surface of the box body and the lower surface of the EMU electronic component board; the shape of the lower heat conduction block is adapted to the shape of the lower surface of the EMU electronic component board and the inner wall of the bottom surface of the box body, so as to ensure that the upper and lower surfaces of the lower heat conduction block are respectively attached to the inner wall of the bottom surface of the box body and the surface of the heat generating components on the lower surface of the EMU electronic component board.

3. The airborne monitoring device of the aero-engine EMU according to claim 2, characterized in that, Thermal pads are arranged between the upper and lower surfaces of the heat conduction block and the inner wall of the housing and / or between the upper and lower surfaces of the heat conduction block and the upper and lower surfaces of the heat generating components on the EMU electronic component board.

4. The airborne monitoring device of the aero-engine EMU according to claim 1, characterized in that, Multiple heat dissipation rib strips are arranged on the outer surface of the housing.

5. The airborne monitoring device of the aero-engine EMU according to claim 2, wherein The lower heat conduction block is fixedly arranged inside the box body; the EMU electronic component board is fixedly arranged on the lower heat conduction block, and the upper heat conduction block is fixedly arranged on the EMU electronic component board.

6. The airborne monitoring device for an aero-engine EMU according to claim 5, characterized in that, The EMU electronic component board includes at least two printed circuit boards; the printed circuit boards are electrically connected and stacked vertically; The lower heat conduction block is fixedly installed inside the box body by screws; the lowermost printed circuit board is fixedly installed on the lower heat conduction block by copper columns and screws; the upper printed circuit board is fixedly installed on the lower printed circuit board by copper columns and screws; the upper heat conduction block is fixedly installed on the uppermost printed circuit board by screws.

7. The airborne monitoring device of the aero-engine EMU according to claim 1, characterized in that It further includes a cache card. An installation opening for the cache card is provided on the side wall of the upper cover, and the cache card is detachably installed inside the upper cover; a first circuit board is provided inside the upper cover, and the first circuit board is electrically connected to the EMU electronic component board; a second electrical connector is provided on the cache card and is connected to the first circuit board through the second electrical connector.

8. The airborne monitoring device of the aero-engine EMU according to claim 7, characterized in that, At least two reinforcing ribs are provided on the inner wall of the top end of the upper cover. A guiding groove is provided on the side wall of the reinforcing rib, and the guiding groove extends to the quick access card installation opening; the quick access card includes a second circuit board and a quick access card housing disposed outside the second circuit board. Guiding strips are provided on the two outer side walls of the quick access card housing and are detachably connected to the guiding groove; the second electrical connector is disposed on the quick access card housing and is electrically connected to the second circuit board; the first circuit board is electrically connected to the EMU electronic component board through a flexible circuit board.

9. The airborne monitoring device for the aero-engine EMU according to any one of claims 1-8, characterized in that, Shock absorbers are provided at the end corners of the housing.

10. The airborne monitoring device of the aero-engine EMU according to any one of claims 1-8, characterized in that Both the box body and the upper cover are integrally formed by processing a plate member.

11. The airborne monitoring device of the aero-engine EMU according to any one of claims 1-8, characterized in that, A sealing groove is provided at the connection between the upper cover and the box body, and a conductive rubber strip is provided in the sealing groove; a conductive rubber pad is provided between the first electrical connector and the box body.

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