CN212658098U - Aviation precooler adopting annular orifice plate seal head - Google Patents
Aviation precooler adopting annular orifice plate seal head Download PDFInfo
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- CN212658098U CN212658098U CN202020915356.9U CN202020915356U CN212658098U CN 212658098 U CN212658098 U CN 212658098U CN 202020915356 U CN202020915356 U CN 202020915356U CN 212658098 U CN212658098 U CN 212658098U
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- orifice plate
- end socket
- annular orifice
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Abstract
The utility model discloses an aviation precooler adopting an annular orifice plate seal head, which comprises a heat exchanger core body, wherein the heat exchanger core body is respectively provided with a hot fluid inlet seal head, a cold fluid outlet seal head and a hot fluid outlet seal head, a first annular orifice plate and a second annular orifice plate which are vertical to the fluid flow direction are arranged in the hot fluid inlet seal head, the first annular orifice plate is close to the inlet of the hot fluid inlet seal head, the second annular orifice plate is close to the heat exchanger core body, a first annular orifice plate and a second annular orifice plate are arranged in the cold fluid inlet seal head, the first annular orifice plate is close to the inlet of the cold fluid inlet seal head, the second annular orifice plate is close to the heat exchanger core body, fluid flowing through the first annular orifice plate enters the second annular orifice plate, the central orifice plate of the second annular orifice plate has no annular seepage orifice, the flow distribution of the fluid can be further carried out, the turbulence degree of the fluid is improved, and the heat exchange effect of the precooler is improved.
Description
Technical Field
The utility model belongs to the technical field of aviation high temperature heat exchanger, a adopt aviation precooler of annular orifice plate head is related to.
Background
Researches show that the temperature field, the uneven distribution of material flow and the longitudinal heat transfer in the heat exchanger can cause small temperature difference and high heat transfer unit Number (NTU), and the three have a coupling relation, wherein the uneven distribution of the material flow can aggravate the uneven distribution of the temperature field and the longitudinal heat transfer, so the uneven distribution of the material flow is a main factor influencing the efficiency of the heat exchanger. When NTU is in the range of 4-50, the performance of the heat exchanger is reduced by 2.5% -7.64% due to uneven material distribution. The NTU of the plate-fin heat exchanger widely used in the air separation field is usually over 100, so the influence of uneven distribution of material flow is increased, and the efficiency is reduced by over 10 percent.
The karman vortex street phenomenon is that when the Reynolds number of fluid is greater than 40, the fluid flowing along the surface of the cylinder periodically turns around and falls off at the upper side and the lower side of the rear edge of the cylinder to form a regularly arranged vortex array. The cylindrical streaming phenomenon can convert laminar flow into turbulent vortex, and the vortex structure can effectively enhance the heat convection effect of the heat exchanger.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the aviation precooler adopting the annular pore plate end socket has the advantages of uniform logistics distribution and high heat exchange efficiency.
The technical scheme of the utility model:
the utility model provides an adopt aviation precooler of annular orifice plate head, includes the heat exchanger core, the heat exchanger core be provided with hot-fluid inlet head, cold fluid outlet head, hot-fluid outlet head respectively, hot-fluid inlet head in be provided with the first annular orifice plate and the second annular orifice plate of perpendicular to fluid flow direction, first annular orifice plate be close to the import of hot-fluid inlet head, second annular orifice plate be close to the heat exchanger core, cold fluid inlet head in be provided with first annular orifice plate and second annular orifice plate, first annular orifice plate be close to the import of cold fluid inlet head, second annular orifice plate be close to the heat exchanger core.
The hot fluid inlet end socket and the cold fluid inlet end socket are both horn-shaped end sockets with the calibers gradually increasing along the fluid flowing direction.
First annular orifice plate include annular frame, central plectane and the support bar of a plurality of concentric settings, annular frame, central plectane pass through the support bar and support the connection, form first annular infiltration hole between per two adjacent annular frame, also form first annular infiltration hole between the annular frame of innermost layer and the central plectane, first annular infiltration hole outwards width grow gradually in the follow, central plectane on have the second annular infiltration hole of a plurality of concentric settings.
Second annular orifice plate include a plurality of concentric ring frame, central plectane and the support bar that sets up, ring frame, central plectane pass through the support bar support connection, form third annular seepage flow hole between per two adjacent ring frame, also form third annular seepage flow hole between the ring frame of innermost layer and the central plectane, third annular seepage flow keep unanimous to outside width from the inside.
The heat exchanger core body is fixed with the hot fluid inlet end socket, the cold fluid outlet end socket and the hot fluid outlet end socket in a sealing welding mode.
The annular frame is in a circular tube shape.
The utility model has the advantages that:
1. the inlet end sockets are horn-shaped end sockets with the calibers gradually increasing along the fluid flowing direction, the depth of the end sockets is large, and the uneven distribution of the material flow of the precooler can be effectively reduced.
2. Most of high-speed fluid entering the end socket of the precooler is concentrated at the central position, the flow rate is gradually reduced from the middle to two ends, the central circular plate at the central position of the first annular pore plate is provided with second annular seepage holes arranged in an annular array, and the first annular seepage holes with gradually increased width are arranged outwards, so that the high-speed fluid at the central position can be redistributed, the uneven distribution of material flow is reduced, and the heat exchange effect of the precooler is enhanced.
3. Fluid through first annular orifice plate flow redistribution gets into second annular orifice plate once more, second annular orifice plate center circular plate does not have annular infiltration hole, outwards be the unanimous third annular infiltration hole of width, the ring frame on first annular orifice plate and the second annular orifice plate all adopts the pipe shape, can carry out further flow distribution to the fluid, and the fluid flows through the pipe frame on first annular orifice plate and the second annular orifice plate, can produce the cylinder and flow around the phenomenon, promote the torrent degree of fluid, be favorable to improving precooler heat transfer effect.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic left-side view of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 in a bottom view;
FIG. 4 is a longitudinal cross-sectional view of a hot fluid inlet head;
FIG. 5 is a schematic view of a first annular orifice plate structure;
FIG. 6 is a schematic view of a second annular orifice plate configuration;
the heat exchanger comprises a heat fluid inlet end socket 1, a cold fluid inlet end socket 2, a cold fluid outlet end socket 3, a heat fluid outlet end socket 4, a heat exchanger core 5, a first annular pore plate 6, a second annular pore plate 7, an annular frame 8, a support strip 9, a central circular plate 10, a first annular seepage hole 11, a second annular seepage hole 12 and a third annular seepage hole 13.
Detailed Description
The invention is described in further detail below by way of specific examples in conjunction with the figures of the specification. This section is an embodiment of the present invention for explaining and explaining the technical solution of the present invention.
As shown in figure 1, an adopt aviation precooler of annular orifice plate head, include: the heat exchanger comprises a hot fluid inlet end socket 1, a cold fluid inlet end socket 2, a cold fluid outlet end socket 3, a hot fluid outlet end socket 4, a heat exchanger core body 5, a first annular orifice plate 6 and a second annular orifice plate 7, wherein the heat exchanger core body 5 is respectively welded with the hot fluid inlet end socket 1, the cold fluid inlet end socket 2, the cold fluid outlet end socket 3 and the hot fluid outlet end socket 4, the hot fluid inlet end socket 1 is internally provided with a first annular orifice plate 6 and a second annular orifice plate 7 which are vertical to the fluid flowing direction, the first annular orifice plate 6 is close to the inlet of the hot fluid inlet end socket 1, the second annular orifice plate 7 is close to the heat exchanger core body 5, the cold fluid inlet end socket 2 is internally provided with a first annular orifice plate 6 and a second annular orifice plate 7, the first annular orifice plate 6 is close to the inlet of the cold fluid inlet end socket 2, two layers of annular pore plates are arranged at the inlet end sockets of cold and hot fluids, and the two layers of annular pore plates have the function of redistributing the inlet fluids twice.
As shown in fig. 3, the hot fluid inlet end socket 1 and the cold fluid inlet end socket 2 are both flared end sockets with gradually increasing calibers along the fluid flowing direction, and the depth ratio (i.e., the height of the end sockets) of the end sockets is large, so that the uneven distribution of material flows of the precooler can be effectively reduced.
As shown in fig. 5, the first annular hole 6 plate includes a plurality of concentrically arranged annular frames 8, a central circular plate 10 and a supporting strip 9, the annular frames 8 and the central circular plate 10 are supported and connected by the supporting strip 9, a first annular seepage hole 11 is formed between every two adjacent annular frames 8, a first annular seepage hole 11 is also formed between the innermost annular frame 8 and the central circular plate 10, the width of the first annular seepage hole 11 is gradually increased from inside to outside, and a plurality of concentrically arranged second annular seepage holes 12 are formed in the central circular plate 10.
As shown in fig. 6, the second annular orifice plate 7 includes a plurality of annular frames 8, a central circular plate 10 and a supporting strip 9, which are concentrically arranged, the annular frames 8 and the central circular plate 10 are supported and connected by the supporting strip 9, a third annular seepage hole 13 is formed between every two adjacent annular frames 8, a third annular seepage hole 13 is also formed between the innermost annular frame 8 and the central circular plate 10, and the widths of the third annular seepage holes 13 are kept consistent from inside to outside.
The annular frame 8 is in a circular tube shape, further flow distribution can be carried out on the fluid, the fluid flows through the circular tube-shaped frame 8 on the first annular pore plate 6 and the second annular pore plate 7, a cylindrical streaming phenomenon can be generated, the turbulence degree of the fluid is improved, and the heat exchange effect of the precooler is favorably improved.
The utility model discloses a working process does:
cold and hot fluid respectively flows into a hot fluid inlet end socket 1 and a cold fluid inlet end socket 2 and then flows through a first annular orifice plate 6, a middle circular plate 10 at the center of the first annular orifice plate 6 is provided with second annular seepage holes 12 which are arranged in an annular array, the center circular plate 10 is externally provided with a first annular seepage hole 11 with gradually increasing width, the high-speed fluid at the center can be redistributed, the fluid redistributed by the flow of the first annular orifice plate 6 enters a second annular orifice plate 7 again, the center circular plate 10 of the second annular orifice plate 7 is not provided with annular seepage holes, the center circular plate 10 is externally provided with a third annular seepage hole 13 with consistent width, annular frames 8 on the first annular orifice plate 6 and the second annular orifice plate 7 are both in a circular tube shape, the fluid can be further distributed by the flow, and the fluid flows through the circular tube frames on the two annular orifice plates to generate a cylindrical streaming phenomenon, the turbulence degree of the fluid is improved, and the heat exchange effect of the precooler is improved. The cold and hot fluid redistributed by the two layers of annular pore plate material flows carries out heat convection in the heat exchanger core body 5 and then flows out through the cold and hot fluid outlet end sockets respectively, and the whole heat exchange process is completed.
Claims (6)
1. The utility model provides an adopt aviation precooler of annular orifice plate head which characterized in that: comprises a heat exchanger core body (5), the heat exchanger core body (5) is respectively provided with a hot fluid inlet seal head (1), a cold fluid inlet seal head (2), a cold fluid outlet seal head (3) and a hot fluid outlet seal head (4), a first annular pore plate (6) and a second annular pore plate (7) which are vertical to the flowing direction of the fluid are arranged in the hot fluid inlet end socket (1), the first annular orifice plate (6) is close to the inlet of the hot fluid inlet end socket (1), the second annular pore plate (7) is close to the heat exchanger core body (5), a first annular pore plate (6) and a second annular pore plate (7) are arranged in the cold fluid inlet end socket (2), the first annular pore plate (6) is close to the inlet of the cold fluid inlet end socket (2), and the second annular pore plate (7) is close to the heat exchanger core body (5).
2. The aviation precooler adopting the annular orifice plate end socket as claimed in claim 1, wherein: the hot fluid inlet end socket (1) and the cold fluid inlet end socket (2) are both horn-shaped end sockets with the calibers gradually increasing along the flowing direction of the fluid.
3. The aviation precooler adopting the annular orifice plate end socket as claimed in claim 1, wherein: first annular orifice plate (6) include annular frame (8), central plectane (10) and support bar (9) that a plurality of concentric settings set up, annular frame (8), central plectane (10) support through support bar (9) and connect, form first annular infiltration hole (11) between per two adjacent annular frame (8), also form first annular infiltration hole (11) between annular frame (8) and central plectane (10) of innermost layer, first annular infiltration hole (11) from inside to outside width grow gradually, central plectane (10) on have second annular infiltration hole (12) of a plurality of concentric settings.
4. The aviation precooler adopting the annular orifice plate end socket as claimed in claim 1, wherein: second annular orifice plate (7) include annular frame (8), central plectane (10) and support bar (9) that a plurality of concentric settings set up, annular frame (8), central plectane (10) support the connection through support bar (9), form third annular infiltration hole (13) between per two adjacent annular frame (8), also form third annular infiltration hole (13) between annular frame (8) and the central plectane (10) of innermost layer, third annular infiltration hole (13) keep unanimous from inside to outside width.
5. The aviation precooler adopting the annular orifice plate end socket as claimed in claim 1, wherein: the heat exchanger core body (5) is fixed with the hot fluid inlet end socket (1), the cold fluid inlet end socket (2), the cold fluid outlet end socket (3) and the hot fluid outlet end socket (4) in a sealing welding mode.
6. The aviation precooler adopting the annular orifice plate end socket as claimed in claim 3 or 4, wherein: the annular frame (8) is in a circular tube shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020915356.9U CN212658098U (en) | 2020-05-26 | 2020-05-26 | Aviation precooler adopting annular orifice plate seal head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020915356.9U CN212658098U (en) | 2020-05-26 | 2020-05-26 | Aviation precooler adopting annular orifice plate seal head |
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| Publication Number | Publication Date |
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| CN212658098U true CN212658098U (en) | 2021-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020915356.9U Active CN212658098U (en) | 2020-05-26 | 2020-05-26 | Aviation precooler adopting annular orifice plate seal head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104297A (en) * | 2021-11-19 | 2022-03-01 | 中国商用飞机有限责任公司 | Rotational flow mixing device for air source system heat exchanger |
| CN115597420A (en) * | 2022-12-15 | 2023-01-13 | 四川大学（Cn） | Staggered counter-flow type precooling heat exchanger |
-
2020
- 2020-05-26 CN CN202020915356.9U patent/CN212658098U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114104297A (en) * | 2021-11-19 | 2022-03-01 | 中国商用飞机有限责任公司 | Rotational flow mixing device for air source system heat exchanger |
| CN115597420A (en) * | 2022-12-15 | 2023-01-13 | 四川大学（Cn） | Staggered counter-flow type precooling heat exchanger |
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