A double-in-single-row gas inlet and outlet structure of a UAV

Abstract

The utility model relates to an unmanned plane technical field discloses a kind of unmanned plane double-in single-row gas inlet-out structure, including electric pile shell, the outside of electric pile shell is equipped with exhaust port, two connecting pipes are symmetrically fixedly connected on electric pile shell, the top of two connecting pipes is equipped with air inlet, the outside of electric pile shell is equipped with fixed mechanism, the inside of connecting pipe is equipped with filter frame, connecting pipe is equipped with the mounting groove matched with filter frame, the outside of connecting pipe is equipped with mounting plate, sealing plate is fixedly connected between mounting plate and filter frame, sealing plate is inserted into mounting groove;The utility model, by the cooperation between mounting plate, sealing plate, mounting groove, side plate, positioning plate, guide rod, guide plate, plug rod, insert ring, sliding plate, U type round pole, spring and movable rod, to facilitate filter frame is fixed in the inside of connecting pipe to filter gas.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) technology, specifically a dual-inlet single-outlet gas inlet and outlet structure for UAVs. Background Technology

[0002] With the large-scale application of drones in logistics delivery, emergency rescue and other fields, the requirements for endurance are increasing. Hydrogen fuel cells have become an important development direction for drone power systems due to their advantages such as high energy density and zero emissions. Among them, the fuel cell stack, as the core component of the fuel cell, directly determines the stability of the stack's power output and its service life through its gas management efficiency.

[0003] Traditional drone fuel cell stacks mostly adopt a single-inlet, single-outlet gas structure. While this design is simple, it reveals significant drawbacks in high-power, multi-cell stacks: the single inlet has a limited gas flow rate and low velocity, making it prone to water accumulation inside the stack due to reaction, which can lead to "water blockage" and affect gas diffusion efficiency; the single outlet can cause pressure fluctuations inside the stack during exhaust, especially under low-pressure conditions, where insufficient hydrogen supply may lead to "hydrogen deficiency and stack burnout," resulting in permanent damage to the stack. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a dual-inlet single-outlet gas inlet and outlet structure for UAVs, which effectively solves the problem of hydrogen deficiency and burnout caused by low fuel cell stack gas pressure during exhaust.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-inlet single-outlet gas inlet and outlet structure for unmanned aerial vehicles (UAVs), comprising a fuel cell stack housing, an exhaust port on the outer side of the fuel cell stack housing, two connecting pipes symmetrically fixedly connected to the fuel cell stack housing, an air inlet at the top of each connecting pipe, a fixing mechanism on the outer side of the fuel cell stack housing, a filter frame inside the connecting pipe, an installation groove matching the filter frame on the connecting pipe, an installation plate on the outer side of the connecting pipe, and a sealing plate fixedly connected between the installation plate and the filter frame, the sealing plate being inserted into the installation groove.

[0006] Preferably, a sealing ring is fixedly connected to the outer side of the mounting plate, and the sealing ring is fitted around the outer side of the sealing plate and fits against the connecting pipe.

[0007] Preferably, the fixing mechanism includes two positioning plates symmetrically fixed to the outside of the fuel cell housing, and side plates are fixedly connected to the outside of the two mounting plates, with the two side plates respectively movably sleeved on the outside of the two positioning plates.

[0008] Preferably, two guide rods are fixedly connected between the two positioning plates, and two guide plates are symmetrically and movably sleeved between the two guide rods. Insert rods are fixedly connected to the sides of the two guide plates that are far apart from each other, and insert rings are fixedly connected to the sides of the two side plates that are close to each other. The two insert rods are respectively inserted into the two insert rings.

[0009] Preferably, a sleeve plate is fixedly connected between the two guide rods, a U-shaped round rod is fixedly connected to the outside of the sleeve plate, a sliding plate is movably sleeved on the outside of the U-shaped round rod, and two springs are symmetrically fixedly connected between the sliding plate and the sleeve plate, with both springs sleeved on the outside of the U-shaped round rod.

[0010] Preferably, the outer side of the skateboard is symmetrically rotatably connected to two movable rods, and the ends of the two movable rods away from the skateboard are respectively rotatably connected to two guide plates.

[0011] Preferably, a sleeve block is fixedly sleeved on the outer middle of the U-shaped rod, and a positioning hole is provided on the outer side of the sleeve block. A positioning shaft is rotatably connected on the side of the slide plate away from the sleeve plate, and the outer diameter of the positioning shaft is equal to the inner diameter of the positioning hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The coordination between the exhaust port, connecting pipe, and air inlet facilitates the resolution of water blockage and gas flow rate issues, and avoids hydrogen deficiency and reactor burnout. The coordination between the mounting plate, sealing plate, mounting groove, side plate, positioning plate, guide rod, guide plate, insert rod, insert ring, sliding plate, U-shaped round rod, spring, and movable rod facilitates the fixing of the filter frame inside the connecting pipe for gas filtration.

[0014] 2. Through the cooperation of the guide rod, guide plate, slide plate, U-shaped rod, spring, movable rod, positioning shaft and positioning hole, the two insertion rods can be fixed after they are brought close to each other, which makes it easier to place the filter frame inside the connecting tube. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the dual-inlet single-row gas inlet and outlet structure of the UAV of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of the connecting pipe of this utility model;

[0019] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the skateboard structure of this utility model.

[0021] In the diagram: 1. Fuel cell stack housing; 2. Fixing mechanism; 201. Positioning plate; 202. Side plate; 203. Guide plate; 204. Guide rod; 205. Sleeve plate; 206. Slide plate; 207. Insert ring; 208. Insert rod; 209. Movable rod; 2010. U-shaped round rod; 2011. Spring; 2012. Positioning hole; 2013. Sleeve block; 2014. Positioning shaft; 3. Connecting pipe; 4. Air inlet; 5. Exhaust outlet; 6. Sealing ring; 7. Filter frame; 8. Mounting groove; 9. Sealing plate; 10. Mounting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1, by Figure 1-2 This utility model relates to a dual-inlet single-outlet gas inlet and outlet structure for an unmanned aerial vehicle (UAV), comprising a fuel cell stack housing 1, an exhaust port 5 on the outer side of the fuel cell stack housing 1, two connecting pipes 3 symmetrically fixedly connected to the fuel cell stack housing 1, each connecting pipe 3 having an air inlet 4 at its top, a fixing mechanism 2 on the outer side of the fuel cell stack housing 1, a filter frame 7 inside the connecting pipe 3, an installation groove 8 matching the filter frame 7 on the connecting pipe 3, an installation plate 10 on the outer side of the connecting pipe 3, a sealing plate 9 fixedly connected between the installation plate 10 and the filter frame 7, the sealing plate 9 being inserted into the installation groove 8, and a sealing ring 6 fixedly connected to the outer side of the installation plate 10, the sealing ring 6 being sleeved on the outer side of the sealing plate 9 and fitting against the connecting pipe 3, thereby ensuring the stability of the connecting pipe 3 by setting the sealing ring 6;

[0024] In operation, the two air inlets 4 allow for better control of gas inflow, increasing gas flow rate and velocity. This helps to resolve water blockage within the fuel cell stack, enabling the water generated during the reaction to be discharged more effectively. Simultaneously, it allows for more uniform gas distribution within the stack, reducing performance fluctuations caused by uneven gas distribution and resulting in more stable stack performance. The dual-inlet design ensures hydrogen supply, increases the gas flow rate in the hydrogen path, and prevents hydrogen shortage and burnout caused by low stack pressure during exhaust. A filter frame 7 is installed inside the connecting pipe 3 to filter the gas.

[0025] Specifically, by Figure 3-4The fixing mechanism 2 includes two positioning plates 201 symmetrically fixed to the outside of the fuel cell housing 1. Side plates 202 are fixedly connected to the outside of each of the two mounting plates 10. The two side plates 202 are movably sleeved on the outside of the two positioning plates 201. Two guide rods 204 are fixedly connected between the two positioning plates 201. Two guide plates 203 are symmetrically and movably sleeved between the two guide rods 204. Insert rods 208 are fixedly connected to the sides of the two guide plates 203 that are far apart from each other. Insert rings 207 are fixedly connected to the sides of the two side plates 202 that are close to each other. The two insert rods 208... 8. Insert two insert rings 207 respectively. A sleeve plate 205 is fixedly sleeved between the two guide rods 204. A U-shaped round rod 2010 is fixedly connected to the outside of the sleeve plate 205. A slide plate 206 is movably sleeved on the outside of the U-shaped round rod 2010. Two springs 2011 are symmetrically fixedly connected between the slide plate 206 and the sleeve plate 205. Both springs 2011 are sleeved on the outside of the U-shaped round rod 2010. Two movable rods 209 are symmetrically rotatably connected to the outside of the slide plate 206. The ends of the two movable rods 209 away from the slide plate 206 are rotatably connected to the two guide plates 203 respectively.

[0026] In use, first pull the slide plate 206 to slide along the U-shaped rod 2010. At this time, both springs 2011 are stretched, and the two guide plates 203 are driven to slide along the two guide rods 204 through the two movable rods 209. The two insertion rods 208 move closer to each other. Then, the two filter frames 7 are placed in the two connecting pipes 3, so that the two sealing plates 9 are inserted into the two mounting slots 8, and the two sealing rings 6 are attached to the two connecting pipes 3. At the same time, the two side plates 202 are respectively fitted on the outside of the two positioning plates 201. Then, release the slide plate 206, so that the slide plate 206 slides along the U-shaped rod 2010 under the elastic force of the two springs 2011. The two movable rods 209 drive the two guide plates 203 to slide along the two guide rods 204, and the two insertion rods 208 move away from each other until they are inserted into the two insertion rings 207 to fix the position of the two side plates 202. Finally, fix the filter frames 7 in the connecting pipes 3 to filter the gas.

[0027] Specifically, by Figure 4 As shown, a sleeve block 2013 is fixedly sleeved on the outer middle of the U-shaped round rod 2010. The outer side of the sleeve block 2013 is provided with a positioning hole 2012. The side of the sliding plate 206 away from the sleeve plate 205 is rotatably connected to a positioning shaft 2014. The outer diameter of the positioning shaft 2014 is equal to the inner diameter of the positioning hole 2012.

[0028] In use, when the slide plate 206 slides along the U-shaped rod 2010, causing the two insert rods 208 to approach each other, both springs 2011 are stretched. Then, the positioning shaft 2014 is rotated, causing it to insert into the positioning hole 2012 under the elastic force of the two springs 2011. At this time, the two springs 2011 are still stretched, thus fixing the position of the slide plate 206. This fixes the two insert rods 208 after they approach each other, making it easier for the side plate 202 to be fitted onto the outside of the positioning plate 201, and thus easier for the filter frame 7 to be placed in the connecting tube 3. When the positioning shaft 2014 is removed from the positioning hole 2012, the two springs 2011 return to their original position, causing the slide plate 206 to slide along the U-shaped rod 2010, thus making it easier for the two insert rods 208 to move away from each other and insert into the two insert rings 207 respectively, finally fixing the filter frame 7.

[0029] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A dual-inlet, single-outlet gas inlet / outlet structure for unmanned aerial vehicles (UAVs), comprising a fuel cell stack housing (1), characterized in that: The outer side of the fuel cell stack housing (1) is provided with an exhaust port (5). Two connecting pipes (3) are symmetrically fixedly connected to the fuel cell stack housing (1). The top of each connecting pipe (3) is provided with an air inlet (4). The outer side of the fuel cell stack housing (1) is provided with a fixing mechanism (2). The inside of the connecting pipe (3) is provided with a filter frame (7). The connecting pipe (3) is provided with an installation groove (8) that matches the filter frame (7). The outer side of the connecting pipe (3) is provided with an installation plate (10). A sealing plate (9) is fixedly connected between the installation plate (10) and the filter frame (7). The sealing plate (9) is inserted into the installation groove (8).

2. The dual-inlet single-row gas inlet / outlet structure for unmanned aerial vehicles according to claim 1, characterized in that: A sealing ring (6) is fixedly connected to the outside of the mounting plate (10). The sealing ring (6) is fitted on the outside of the sealing plate (9) and fits against the connecting pipe (3).

3. The dual-inlet single-outlet gas inlet / outlet structure for unmanned aerial vehicles according to claim 1, characterized in that: The fixing mechanism (2) includes two positioning plates (201) symmetrically fixed to the outside of the stack housing (1). The two mounting plates (10) are fixedly connected to the outside of the side plates (202), and the two side plates (202) are respectively movably sleeved on the outside of the two positioning plates (201).

4. The dual-inlet single-outlet gas inlet / outlet structure for unmanned aerial vehicles according to claim 3, characterized in that: Two guide rods (204) are fixedly connected between the two positioning plates (201). Two guide plates (203) are symmetrically and movably sleeved between the two guide rods (204). Insert rods (208) are fixedly connected to the sides of the two guide plates (203) that are far apart from each other. Insert rings (207) are fixedly connected to the sides of the two side plates (202) that are close to each other. The two insert rods (208) are respectively inserted into the two insert rings (207).

5. The dual-inlet single-row gas inlet / outlet structure for unmanned aerial vehicles according to claim 4, characterized in that: A sleeve plate (205) is fixedly sleeved between the two guide rods (204). A U-shaped round rod (2010) is fixedly connected to the outside of the sleeve plate (205). A sliding plate (206) is movably sleeved on the outside of the U-shaped round rod (2010). Two springs (2011) are symmetrically fixedly connected between the sliding plate (206) and the sleeve plate (205). Both springs (2011) are sleeved on the outside of the U-shaped round rod (2010).

6. The dual-inlet single-outlet gas inlet and outlet structure for a UAV according to claim 5, characterized in that: Two movable rods (209) are symmetrically rotatably connected to the outer side of the slide plate (206), and the ends of the two movable rods (209) away from the slide plate (206) are respectively rotatably connected to two guide plates (203).

7. A dual-inlet single-outlet gas inlet / outlet structure for unmanned aerial vehicles according to claim 5, characterized in that: A sleeve block (2013) is fixedly sleeved on the middle of the outer side of the U-shaped round rod (2010). A positioning hole (2012) is provided on the outer side of the sleeve block (2013). A positioning shaft (2014) is rotatably connected to the side of the slide plate (206) away from the sleeve plate (205). The outer diameter of the positioning shaft (2014) is equal to the inner diameter of the positioning hole (2012).

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