Heat exchange mechanism under low-pressure environment

Abstract

The invention relates to a heat exchange mechanism in a low-air-pressure environment, and belongs to the technical field of heat exchangers, the heat exchange mechanism in the low-air-pressure environment comprises a first fixing plate and a second fixing plate, and a plurality of heat exchange pipes are rotationally arranged between the first fixing plate and the second fixing plate; a plurality of rotating pipes located in the center of the inner side of the heat exchange pipe are rotationally arranged between the first fixing plate and the second fixing plate, the rotating pipes are rotationally sleeved with transmission assemblies located on the inner side of the heat exchange pipe, and a plurality of scraping assemblies are arranged on the outer sides of the transmission assemblies. The outer sides of the multiple rotating pipes fixedly communicate with a plurality of water spraying assemblies for spraying water to one side of the transmission assembly, and the two ends of the multiple rotating pipes are provided with connecting assemblies connected with the heat exchange pipes correspondingly, the water spraying assemblies drive the transmission assembly and the scraping assemblies to rotate, on one hand, water scales on the inner side walls of the heat exchange pipes can be scraped, and on the other hand, the heat exchange pipes can be scraped; on the other hand, water can be stirred, and the heat transfer efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a heat exchange mechanism in a low-pressure environment. Background Art

[0002] The interior of the aircraft requires relatively large batteries for power supply. The batteries will generate heat during use. As the scope of battery use expands, and because the low air pressure formed during the flight of the aircraft is not conducive to heat dissipation, higher requirements are placed on the heat dissipation performance of the batteries. Conventionally, the heat is mainly dissipated by heat exchangers.

[0003] For example, in a Chinese utility model patent with the announcement number CN204128420U and the name of a heat exchanger assembly, it specifically includes a fluid transfer layer and a first outer layer, the fluid transfer layer is made of an elastomeric material, and the first outer layer includes flexible graphite, the fluid transfer layer includes at least one channel, and is configured to form a passage for receiving a heat transfer fluid between the channel and a portion of the first outer layer. Although the above-mentioned prior art can receive the heat transfer fluid through the passage, the battery of a large aircraft is relatively large, and the aircraft is in a low-pressure environment, the heat generated is relatively high, and it is easy to heat the fluid. Since the fluid generally uses water for heat transfer, and there will be impurities in the water, the scale generated during the long-term heating process is easy to adhere to the inner wall of the channel. If it is not cleaned, the heat transfer is easily blocked, so now a heat exchange mechanism in a low-pressure environment is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a heat exchange mechanism in a low pressure environment with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A heat exchange mechanism for a low-pressure environment comprises a first fixed plate and a second fixed plate, a plurality of heat exchange tubes are rotatably arranged between the first fixed plate and the second fixed plate, a plurality of rotating tubes are rotatably arranged between the first fixed plate and the second fixed plate and are respectively located at the inner center of the heat exchange tubes, a plurality of rotating tubes are rotatably sleeved with a transmission assembly located at the inner side of the heat exchange tube, a plurality of scraping assemblies are arranged on the outer side of the transmission assembly, a plurality of water spraying assemblies are fixedly connected to the outer side of the plurality of rotating tubes for spraying water toward one side of the transmission assembly, and a connection assembly connected to the heat exchange tubes is arranged at both ends of the plurality of rotating tubes.

[0006] As a further optimization scheme of the present invention, the transmission assembly includes a swivel ring rotatably mounted on the outside of a swivel tube, a plurality of arc plates are fixedly arranged at equal intervals on the outer circumference of the swivel ring, and a swivel plate fixedly arranged on the edge of the swivel ring and fixedly connected to the plurality of arc plates at the same time.

[0007] As a further optimization scheme of the present invention, the scraping assembly includes a fixed rod fixedly arranged on the outside of the rotating plate, one end of the fixed rod is fixedly provided with a transversely arranged scraper, and one side of several of the scrapers is in contact with the inner wall of the heat exchange tube.

[0008] As a further optimization scheme of the present invention, the water spray assembly includes a plurality of first water spray pipes equidistantly and fixedly connected to each other on the outside of the rotating pipe, and one end of the plurality of first water spray pipes is fixedly connected to a plurality of second water spray pipes that spray water obliquely toward the arc plate.

[0009] As a further optimization solution of the present invention, the connection assembly includes a fixing ring fixedly sleeved on both ends of the rotating tube, and a plurality of connecting rods fixedly connected to the inner wall of the heat exchange tube are fixedly arranged on the outer side of the fixing ring.

[0010] As a further optimization solution of the present invention, both ends of the plurality of heat exchange tubes are respectively sealedly connected with sealed bearings that are sealed and rotatably connected to the first fixed plate and the second fixed plate.

[0011] As a further optimization scheme of the present invention, a plurality of second flow exchange holes connected to the inner side of one end of the heat exchange tube are formed through one side of the first fixed plate, and a plurality of first flow exchange holes connected to the inner side of the other end of the heat exchange tube are formed through one side of the second fixed plate.

[0012] As a further optimization scheme of the present invention, a first semicircular tube connecting adjacent heat exchange tubes with the rotating tube is fixedly provided on one side of the second fixed plate, and a second semicircular tube connecting adjacent heat exchange tubes with the rotating tube is fixedly provided on one side of the first fixed plate.

[0013] As a further optimization solution of the present invention, an adapter rotatably connected to the end rotating pipe is fixedly provided on one side of the first fixed plate, and one end of the adapter is fixedly connected to the water inlet pipe.

[0014] As a further optimization scheme of the present invention, a plurality of heat-exchange tubes are fixedly sleeved on the outer sides thereof with a plurality of heat-dissipating fins, and the plurality of heat-dissipating fins on two adjacent heat-exchange tubes are staggeredly distributed.

[0015] The beneficial effects of the present invention are: In the present invention, water is pumped into the water inlet pipe by a water pump, so that water can enter the interior of the rotating pipe through the adapter and finally be sprayed out through the multiple second water spray pipes on the outside of the rotating pipe. Since the spraying angles of the multiple second water spray pipes are inclined, the high-pressure water of the multiple second water spray pipes is sprayed obliquely to one side of the arc plate, pushing the multiple arc plates to rotate, thereby driving the rotating ring and the rotating plate to rotate on the outside of the rotating pipe, driving the multiple fixed rods on the outside of the rotating plate to rotate, and then driving the scraper to rotate and scrape on the inner wall of the heat exchange tube, so that the scale adhered to the inner wall of the heat exchange tube can be scraped off, preventing the scale from adhering to the inner wall of the heat exchange tube during a long period of heat transfer, thereby avoiding affecting the efficiency of heat transfer.

[0016] In the present invention, water is sprayed obliquely through multiple second water spray pipes. Since the sprayed water will generate a reverse thrust on the second water spray pipe, it will push the rotating pipe to rotate in the reverse direction, so that the rotation direction of the rotating pipe is opposite to the rotation direction of the arc plate, the rotating ring and the rotating plate, and the fixed rings and the connecting rods at both ends of the rotating pipe are driven to rotate, so that the heat exchange tube can be driven to rotate with the rotating tube, so that the rotation direction of the heat exchange tube is consistent with the rotation direction of the rotating tube, so that the rotation direction of the heat exchange tube can be opposite to the rotation direction of the scraper. On the one hand, the scraper can better scrape off the scale. On the other hand, since the water sprayed from the second water spray pipe will flow into the interior of the heat exchange tube, the water inside the heat exchange tube can be stirred by the scraper rotating in the reverse direction, thereby improving the heat transfer effect on the outside of the heat exchange tube. The rotation of the heat exchange tube can also drive multiple heat dissipation fins on the outside of the heat exchange tube to rotate, thereby improving the heat transfer efficiency from the heat dissipation fins to the inside of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first internal overall structure of the heat exchange tube of the present invention; Figure 2 It is a schematic diagram of the second internal overall structure of the heat exchange tube of the present invention; Figure 3 It is a schematic diagram of the third internal overall structure of the heat exchange tube of the present invention; Figure 4 It is a schematic diagram of the overall structure of the present invention; Figure 5 The present invention Figure 1 Enlarged view of point A in the middle; Figure 6 The present invention Figure 1 Enlarged view of point B in the middle; Figure 7 The present invention Figure 1 Enlarged view of point C in the middle; Figure 8 The present invention Figure 2 Enlarged view of point D in the middle; Fig. 9 The present invention Figure 3 Enlarged view of point E in the middle.

[0018] In the figure: 1. first fixed plate; 2. heat exchange tube; 3. rotating tube; 4. transmission assembly; 401. rotating ring; 402. arc plate; 403. rotating plate; 5. water spray assembly; 501. first water spray pipe; 502. second water spray pipe; 6. scraping assembly; 601. fixing rod; 602. scraper; 7. second fixed plate; 8. first flow exchange hole; 9. second flow exchange hole; 10. connecting assembly; 1001. fixing ring; 1002. connecting rod; 11. sealing bearing; 12. cooling fin; 13. first semicircular tube; 14. second semicircular tube; 15. adapter; 16. water inlet pipe. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a heat exchange mechanism in a low-pressure environment includes a first fixed plate 1 and a second fixed plate 7. The first fixed plate 1 and the second fixed plate 7 are arranged parallel to each other. A plurality of heat exchange tubes 2 are rotatably arranged between the first fixed plate 1 and the second fixed plate 7. This embodiment only shows four heat exchange tubes 2, and the specific number is flexibly adjusted according to the volume of the battery and the heat dissipation requirements. The outer sides of the four heat exchange tubes 2 are fixedly sleeved with a plurality of heat dissipation fins 12. The plurality of heat dissipation fins 12 on two adjacent heat exchange tubes 2 are staggered. The staggered distribution of the plurality of heat dissipation fins 12 can increase the heat contact area with the air and improve the heat transfer efficiency. The two ends of the four heat exchange tubes 2 are respectively sealed with sealed bearings 11 sealed with the first fixed plate 1 and the second fixed plate 7. The sealed bearings 11 can make the four heat exchange tubes 2 rotate between the first fixed plate 1 and the second fixed plate 7 without leaking liquid.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9As shown, four rotating tubes 3 are rotatably arranged between the first fixed plate 1 and the second fixed plate 7, respectively located at the inner center of the heat exchange tube 2, one end of the first rotating tube 3 at the end passes through the rotating first fixed plate 1, and the other end of the first rotating tube 3 at the end is sealed and rotated on one side of the second fixed plate 7, one end of the second rotating tube 3 at the end is sealed and rotated on one side of the first fixed plate 1, and the other end of the second rotating tube 3 at the end passes through the rotating second fixed plate 7, and so on, that is, the connection relationship between the two adjacent rotating tubes 3 and the first fixed plate 1 and the second fixed plate 7 is opposite, one side of the first fixed plate 1 is penetrated by a plurality of second flow exchange holes 9 connected to the inner side of one end of the heat exchange tube 2, and the plurality of second flow exchange holes 9 are equidistantly arranged between the rotating tube 3 and the heat exchange tube 2, one side of the second fixed plate 7 is penetrated by a plurality of first flow exchange holes 8 connected to the inner side of the other end of the heat exchange tube 2, and the plurality of first flow exchange holes 8 are equidistantly arranged between the rotating tube 3 and the heat exchange tube 2, and one side of the second fixed plate 7 is fixedly provided with a first semicircular tube 13 connecting the adjacent heat exchange tube 2 with the rotating tube 3, and the first semicircular tube 13 can be used to One end of the rotating tube 3 is connected to a plurality of first exchange holes 8, a second semicircular tube 14 is fixedly provided on one side of the first fixed plate 1 to connect the adjacent heat exchange tube 2 with the rotating tube 3, and one end of the rotating tube 3 can be connected to a plurality of second exchange holes 9 through the second semicircular tube 14, a switching joint 15 is fixedly provided on one side of the first fixed plate 1 to be rotatably connected to the end rotating tube 3, one end of the switching joint 15 is fixedly connected to a water inlet pipe 16, and the outer sides of the plurality of rotating tubes 3 are fixedly connected to a plurality of water spraying components 5 that spray water to one side of the transmission component 4, and the water inlet pipe 16 One end is fixedly connected to a water pump (not shown in the figure), and one end of the water pump is connected to a water tank (not shown in the figure). The water inside the water tank can be pumped into the water inlet pipe 16 through the water pump, and then the water flows into the inside of the rotating tube 3 through the adapter 15, and finally the water is sprayed between the rotating tube 3 and the heat exchange tube 2 through the water spray assembly 5 on the outside of the rotating tube 3, and then the water is passed into multiple rotating tubes 3 and the heat exchange tube 2 in sequence through the first semicircular tube 13, the first exchange hole 8, the second exchange hole 9 and the second semicircular tube 14, so that the heat outside the heat exchange tube 2 is heat transferred.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 , Fig. 9As shown, a plurality of rotating tubes 3 are rotatably sleeved with a transmission assembly 4 located on the inner side of the heat exchange tube 2. In this embodiment, two transmission assemblies 4 are arranged on one rotating tube 3, and the specific number can be flexibly adjusted. The transmission assembly 4 includes a rotating ring 401 rotatably sleeved on the outer side of the rotating tube 3, and a plurality of arc plates 402 are fixedly arranged at equal intervals on the outer circumference of the rotating ring 401. The plurality of arc plates 402 adopt an arc structure, and the arc structure can increase the contact area between the arc plates 402 and water, so that the plurality of arc plates 402 can be driven to rotate better by water flow. A rotating plate 403 fixedly connected to the plurality of arc plates 402 at the same time is fixedly arranged on the edge of the rotating ring 401, and the diameter of the rotating plate 403 is smaller than the inner cavity diameter of the heat exchange tube 2. A plurality of scraping assemblies 6 are arranged on the outer side of the transmission assembly 4. The component 6 includes a fixed rod 601 fixedly arranged on the outside of the rotating plate 403, one end of the fixed rod 601 is fixedly provided with a transversely arranged scraper 602, one side of the scraper 602 is provided with a rubber strip (not shown in the figure), and the rubber strip can prevent the inner wall of the heat exchange tube 2 from being damaged during the process of scraping scale, one side of several scrapers 602 is in contact with the inner wall of the heat exchange tube 2, and the water spraying component 5 includes several first water spraying pipes 501 fixedly connected and arranged on the outside of the rotating tube 3 at equal intervals around the circumference, the several first water spraying pipes 501 are inclined outward along the rotating tube 3, one end of the several first water spraying pipes 501 is fixedly connected with several second water spraying pipes 502 that spray water obliquely toward the arc plate 402, and the water outlet end of the second water spraying pipe 502 is inclined toward one side of the concave arc surface of the arc plate 402 , each of the two ends of the rotating tube 3 is provided with a connecting assembly 10 connected to the heat exchange tube 2, and the connecting assembly 10 includes a fixing ring 1001 fixedly sleeved on the two ends of the rotating tube 3, and a plurality of connecting rods 1002 fixedly connected to the inner wall of the heat exchange tube 2 are fixedly provided on the outer side of the fixing ring 1001. Through the fixing ring 1001 and the connecting rod 1002, the heat exchange tube 2 can be driven to rotate in the same direction when the rotating tube 3 rotates. When in use, the water pump draws the cooling water in the water tank into the inside of the water inlet pipe 16, and then the cooling water is passed into the inner side of the rotating tube 3 through the adapter 15, and then the cooling water can enter the inner side of the multiple first water spraying pipes 501 outside the rotating tube 3, and finally be tilted and sprayed out through the multiple second water spraying pipes 502. Since the water spraying will produce a reverse push on the second water spraying pipe 502 The force will push the first water spray pipe 501 and the rotating pipe 3 to rotate in the opposite direction, so that the rotating pipe 3 rotates in the opposite direction to the arc plate 402, the rotating ring 401 and the rotating plate 403, and the fixing rings 1001 and the connecting rods 1002 at both ends of the rotating pipe 3 rotate, so that the heat exchange tube 2 can be driven to rotate along with the rotating pipe 3, so that the rotating direction of the heat exchange tube 2 is consistent with the rotating direction of the rotating pipe 3, so that the rotating direction of the heat exchange tube 2 is opposite to the rotating direction of the scraper 602. On the one hand, the scraper 602 can better scrape off the scale and improve the heat transfer efficiency of the heat exchange tube 2. On the other hand, because the water sprayed from the second water spray pipe 502 will flow into the interior of the heat exchange tube 2, the water inside the heat exchange tube 2 can be stirred by the scraper 602 rotating in the opposite direction.The heat transfer effect on the outside of the heat exchange tube 2 is improved. The rotation of the heat exchange tube 2 can also drive the multiple heat dissipation fins 12 on the outside of the heat exchange tube 2 to rotate, thereby improving the heat transfer efficiency from the heat dissipation fins 12 to the inside of the heat exchange tube 2, so that the aircraft can quickly dissipate heat in a low-pressure environment.

[0023] It should be noted that, when using this heat exchange mechanism in a low-pressure environment, the cooling water in the water tank is first pumped into the water inlet pipe 16 through a water pump, and then the cooling water is passed into the inner side of the rotating pipe 3 through the adapter 15, and then enters the inner side of multiple first water spray pipes 501 outside the rotating pipe 3, and finally is sprayed out obliquely through multiple second water spray pipes 502. Since the water spraying will generate a reverse thrust on the second water spray pipe 502, it will push the first water spray pipe 501 and the rotating pipe 3 in the opposite direction to rotate, so that the rotation direction of the rotating pipe 3 is opposite to the rotation direction of the arc plate 402, the rotating ring 401 and the rotating plate 403, and the fixing ring 1001 and the connecting rod 1002 at both ends of the rotating pipe 3 are driven to rotate, which can drive the heat exchange tube 2 to rotate with the rotating pipe 3, so that the rotation direction of the heat exchange tube 2 is opposite to the rotation direction of the rotating plate 402, the rotating ring 401 and the rotating plate 403. The rotation direction of the tube 3 is consistent. Since the second water spray pipe 502 is tilted to spray onto the concave arc surface of the arc plate 402, the multiple arc plates 402 are pushed to rotate, thereby driving the rotating ring 401 and the rotating plate 403 to rotate on the outside of the rotating tube 3, driving the multiple fixed rods 601 on the outside of the rotating plate 403 to rotate, and then driving the scraper 602 to rotate and scrape on the inner wall of the heat exchange tube 2, so that the scale adhered to the inner wall of the heat exchange tube 2 can be scraped off, and the water inside the heat exchange tube 2 can be stirred to improve the heat transfer effect on the outside of the heat exchange tube 2. At the same time, through the rotation of the heat exchange tube 2, the multiple heat dissipation fins 12 on the outside of the heat exchange tube 2 are driven to rotate, thereby increasing the heat contact area and effect between the heat dissipation fins 12 and the air, and improving the heat transfer efficiency of the heat dissipation fins 12 to the inside of the heat exchange tube 2.

[0024] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A heat exchange mechanism in a low pressure environment, comprising a first fixing plate (1) and a second fixing plate (7), characterized in that: A plurality of heat exchange tubes (2) are rotatably arranged between the first fixed plate (1) and the second fixed plate (7); a plurality of rotating tubes (3) are rotatably arranged between the first fixed plate (1) and the second fixed plate (7) and are respectively located at the inner center of the heat exchange tube (2); a transmission component (4) located at the inner side of the heat exchange tube (2) is rotatably sleeved on the plurality of rotating tubes (3); a plurality of scraping components (6) are arranged on the outer side of the transmission component (4); a plurality of water spray components (5) for spraying water toward one side of the transmission component (4) are fixedly connected to the outer side of the plurality of rotating tubes (3); and connection components (10) connected to the heat exchange tube (2) are arranged at both ends of the plurality of rotating tubes (3).

2. The heat exchange mechanism in a low pressure environment according to claim 1, characterized in that: The transmission assembly (4) comprises a rotating ring (401) rotatably sleeved on the outside of a rotating tube (3), a plurality of arc-shaped plates (402) being fixedly arranged at equal intervals on the outer circumference of the rotating ring (401), and a rotating plate (403) fixedly arranged on the edge of the rotating ring (401) and simultaneously fixedly connected to the plurality of arc-shaped plates (402).

3. The heat exchange mechanism in a low pressure environment according to claim 2, characterized in that: The scraping assembly (6) comprises a fixed rod (601) fixedly arranged on the outside of the rotating plate (403), one end of the fixed rod (601) being fixedly provided with a transversely arranged scraper (602), one side of a plurality of the scrapers (602) being in contact with the inner wall of the heat exchange tube (2).

4. The heat exchange mechanism in a low pressure environment according to claim 3, characterized in that: The water spray assembly (5) comprises a plurality of first water spray pipes (501) which are circumferentially equidistantly fixedly connected and arranged outside the rotating pipe (3); one end of the plurality of first water spray pipes (501) is fixedly connected to a plurality of second water spray pipes (502) which spray water obliquely toward the arc plate (402).

5. The heat exchange mechanism in a low pressure environment according to claim 4, characterized in that: The connection assembly (10) comprises a fixing ring (1001) fixedly sleeved on both ends of the rotating tube (3), and a plurality of connecting rods (1002) fixedly connected to the inner wall of the heat exchange tube (2) are fixedly arranged on the outer side of the fixing ring (1001).

6. The heat exchange mechanism in a low pressure environment according to claim 5, characterized in that: Both ends of the plurality of heat exchange tubes (2) are respectively sealed with sealed bearings (11) which are sealed with the first fixed plate (1) and the second fixed plate (7).

7. The heat exchange mechanism in a low pressure environment according to claim 6, characterized in that: A plurality of second flow exchange holes (9) communicating with the inner side of one end of the heat exchange tube (2) are formed through one side of the first fixing plate (1), and a plurality of first flow exchange holes (8) communicating with the inner side of the other end of the heat exchange tube (2) are formed through one side of the second fixing plate (7).

8. The heat exchange mechanism in a low pressure environment according to claim 7, characterized in that: A first semicircular tube (13) for connecting adjacent heat exchange tubes (2) with the rotating tube (3) is fixedly provided on one side of the second fixed plate (7), and a second semicircular tube (14) for connecting adjacent heat exchange tubes (2) with the rotating tube (3) is fixedly provided on one side of the first fixed plate (1).

9. The heat exchange mechanism in a low pressure environment according to claim 8, characterized in that: A conversion joint (15) is fixedly provided on one side of the first fixed plate (1) and is rotatably connected to the end rotation pipe (3); one end of the conversion joint (15) is fixedly connected to a water inlet pipe (16).

10. A heat exchange mechanism in a low pressure environment according to any one of claims 1 to 9, characterized in that: A plurality of heat exchange fins (12) are fixedly sleeved on the outer sides of the plurality of heat exchange tubes (2), and the plurality of heat exchange fins (12) on two adjacent heat exchange tubes (2) are staggeredly distributed.

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