Novel detachable microcapillary precooler

Abstract

The utility model discloses a novel detachable microcapillary precooler, relates to the field of aero-engine microcapillary precoolers, aims to solve the problem of inconvenience in maintenance in the prior art, and adopts the technical scheme that the novel detachable microcapillary precooler comprises an integrated main gas collecting pipeline and a bottom plate, a spiral core body is further connected between the integrated main gas collecting pipeline and the bottom plate, and the spiral core body is connected with the bottom plate. A pull rod is further mounted on the bottom plate, a through hole corresponding to the pull rod in position and matched with the pull rod in size is formed in the integrated main gas collecting pipeline, and the pull rod is in sliding contact in the through hole and is connected with a locking mechanism; the integrated main gas collecting pipeline is provided with a gas dispersing ring bin and a gas collecting ring bin, the gas dispersing ring bin is communicated with a gas collecting pipeline inlet, the gas collecting ring bin is communicated with a gas collecting pipeline outlet, and the gas dispersing ring bin and the gas collecting ring bin are communicated with the spiral core body; and a multi-sealing mechanism is arranged between the spiral core body and the integrated main gas collecting pipeline. And the pull rod is locked, so that the integrated main gas collecting pipeline can be disassembled when maintenance is needed, and the spiral core body can be conveniently maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft engine micro-tube precoolers, in particular to a detachable novel micro-tube precooler. Background Art

[0002] As a crucial component of aircraft engines, microtube precoolers meet the requirements of low weight, minimal space occupation, and rapid cooling. However, existing microtube precoolers utilize fixed connections between the spiral core, the integrated main air collection pipeline, and the baseplate. Furthermore, the microtubes in the spiral core are arranged linearly on the intake manifold. This structure not only makes the spiral core difficult to maintain, but also creates low airflow disturbance and low heat exchange efficiency when the external air flows through the microtubes due to the strong regularity of the microtube arrangement. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a new type of detachable microtube precooler, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses a detachable novel micro-tube precooler, which adopts the technical solution of comprising an integrated total gas collection pipeline and a bottom plate, wherein a spiral core is connected between the integrated total gas collection pipeline and the bottom plate, and a pull rod is also provided on the bottom plate, and a through hole corresponding to the position of the pull rod and matching the size is provided on the integrated total gas collection pipeline, wherein the pull rod is in sliding contact with the through hole and is connected with a locking mechanism, and the pull rod is locked by the locking mechanism, so that the spiral core and the integrated total gas collection pipeline can be connected. , and a stable connection between the base plate, and the integrated total gas collecting pipeline can be opened by opening the locking mechanism, which is convenient for replacement and maintenance of the spiral core; the integrated total gas collecting pipeline is provided with a scattered gas ring warehouse and a gas collecting ring warehouse, the scattered gas ring warehouse is connected to a gas collecting pipeline inlet, the gas collecting ring warehouse is connected to a gas collecting pipeline outlet, and the scattered gas ring warehouse and the gas collecting ring warehouse are both connected to the spiral core; there are multiple sealing mechanisms between the spiral core and the integrated total gas collecting pipeline, and the multiple seals can achieve effective sealing of the connection to prevent air leakage.

[0005] As a preferred technical solution of the present invention, the upper end of the pull rod has a threaded section, the threaded section slides in the through hole and is engaged with a nut, the nut slides in contact with the top surface of the through hole. The pull rod can be locked by screwing the nut.

[0006] As an optimal technical solution of the present invention, the spiral core includes an air outlet pipe and an air inlet pipe. The air outlet pipe and the air inlet pipe are both tubular structures with one end open, and the side walls of the air outlet pipe and the air inlet pipe are connected through microtubes.

[0007] As a preferred technical solution of the present invention, the integrated main gas collection pipeline is provided with an air outlet and an air inlet. The air inlet is connected to the diffused gas ring silo. The air outlet pipe is inserted into the air outlet, and the air outlet and the gas collection ring silo are connected via a connecting pipe. The air inlet pipe is inserted into the air inlet, and the air inlet pipe is connected to the diffused gas ring silo. The gas to be cooled enters the gas collection ring silo from the air collection pipeline inlet, then evenly enters the microtubes. After heat exchange with the outside air through the microtubes, it enters the air outlet pipe, enters the gas collection ring silo through the air outlet and the connecting pipe, and leaves through the air collection pipeline outlet connected to the gas collection ring silo.

[0008] As a preferred technical solution of the present invention, the outer walls of the open ends of the outlet and inlet pipes are connected to sealing rings, which are sheathed with O-rings. The O-rings slide in contact with the inner walls of the outlet and inlet ports. The upper edges of the sealing rings are provided with inclined pressure surfaces, and the outlet and inlet ports are provided with inclined pressure surfaces. The inclined pressure surfaces correspond to and slide in contact with the inclined pressure surfaces. The O-rings provide a radial seal at the connection, while the inclined pressure surfaces and the inclined pressure surfaces form an inclined seal, thereby achieving a double seal.

[0009] As a preferred technical solution of the present invention, the bottom plate has a first positioning hole and a second positioning hole. The outlet pipe slides in contact with the first positioning hole, and the inlet pipe slides in contact with the second positioning hole. The first and second positioning holes are both connected to the outside world through a compression threaded hole. The compression threaded holes are engaged with a compression bolt. The compression bolt slides in contact with the bottom surfaces of the outlet and inlet pipes. By tightening the compression bolt, the pressing inclined surface can be pressed against the pressure inclined surface to ensure a sealing effect.

[0010] As a preferred technical solution of the present invention, the communicating air holes of the air inlet pipe and the microtubes and the microtubes are arranged in a triangular staggered pattern. The triangular staggered pattern can increase the turbulence of the external air when it flows through, thereby improving the heat exchange effect.

[0011] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present invention connects the integrated main gas collection pipeline and the base plate by using a pull rod and a locking mechanism, and connects the spiral core between the integrated main gas collection pipeline and the base plate, which can achieve efficient cooling while facilitating the maintenance and replacement of the spiral core; the spiral core and the integrated main gas collection pipeline are connected by multiple sealing structures, which can achieve stable sealing at the connection and prevent air leakage; the tightening bolts arranged on the base plate can make the top pressure inclined surfaces opened by the sealing rings of the spiral core outlet pipe and the air inlet pipe press against the pressure inclined surfaces of the air inlet and the air outlet, thereby ensuring the effectiveness of the sealing structure at the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a left-side structural diagram of the present utility model;

[0014] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the utility model;

[0015] Figure 4 This is a schematic diagram of the spiral core structure of the utility model;

[0016] Figure 5 This is an enlarged structural diagram of point B of the utility model;

[0017] Figure 6 This is an enlarged structural diagram of point C of the utility model;

[0018] Figure 7 This is a schematic diagram of the intake pipe structure of the utility model;

[0019] Figure 8 This is an enlarged structural diagram of point D of the present invention.

[0020] In the figure: 1. Integrated main gas collection pipeline; 101. Gas collection pipeline inlet; 102. Gas collection pipeline outlet; 103. Gas dispersion ring silo; 104. Gas collection ring silo; 105. Gas outlet; 106. Connecting pipe; 107. Gas inlet; 108. Pressure inclined surface; 109. Perforation; 2. Bottom plate; 3. Pull rod; 4. Nut; 5. Spiral core; 501. Gas outlet pipe; 502. Gas inlet pipe; 503. Micro tube; 504. Sealing ring; 505. O-ring; 506. Connecting air hole; 6. Tightening bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0022] like Figures 1 to 8 As shown, the utility model discloses a detachable novel micro-tube precooler, which adopts the technical solution of comprising an integrated main gas collecting pipeline 1 and a bottom plate 2, wherein a cooling air inlet is provided at the central axis of the integrated main gas collecting pipeline 1, and a spiral core 5 is connected between the integrated main gas collecting pipeline 1 and the bottom plate 2. Figure 4As shown, the spiral core 5 includes an air outlet pipe 501 and an air inlet pipe 502, and a micro tube 503 is connected between the air outlet pipe 501 and the air inlet pipe 502 to increase the turbulence of the external air when passing through the spiral core 5. Figure 7 、 Figure 8 As shown, the side wall of the air inlet pipe 502 is provided with connecting air holes 506 in a triangular staggered manner, and the microtubes 503 are connected to the connecting air holes 506. A partition is connected to the microtubes 503 of each group of spiral cores 5, which can achieve the effect of bundling the numerous microtubes 503 connected to the spiral cores 5. Multiple groups of spiral cores 5 are arranged in a ring array to form the core heat exchange component of the precooler, wherein the air outlet pipe 501 is arranged in the outer ring and the air inlet pipe 502 is arranged in the inner ring.

[0023] like Figure 2 、 Figure 3 As shown, a positioning hole is opened on the top surface of the bottom plate 2, and the air outlet pipe 501 and the air inlet pipe 502 of the spiral core 5 are both inserted into the positioning holes. There are multiple positioning holes, which correspond one to one with the air outlet pipe 501 and the air inlet pipe 502.

[0024] The integrated total gas collection pipeline 1 is provided with a scattered gas ring silo 103 and a gas collection ring silo 104, which are coaxially arranged. The scattered gas ring silo 103 is located on the inner ring of the gas collection ring silo 104. The scattered gas ring silo 103 is connected to the gas collection pipeline inlet 101, and the gas collection ring silo 104 is connected to the gas collection pipeline outlet 102. In order to connect the air inlet pipe 502 with the scattered gas ring silo 103, the air outlet pipe 501 is connected to the gas collection ring silo 104. The bottom surface of the scattered gas ring silo 103 is connected to the outside world through the air inlet 107, and the upper end of the air inlet pipe 502 is inserted into the air inlet 107. The bottom surface of the integrated total gas collection pipeline 1 is also provided with an air outlet 105, which is connected to the gas collection ring silo 104 through a connecting pipe 106, and the upper end of the air outlet pipe 501 is inserted into the air outlet 105. In order to achieve sealing at the connection, such as Figure 5 、 Figure 6As shown, the upper edges of the air outlet 105 and the air inlet 107 are both provided with a pressure inclined surface 108, and the upper ends of the air outlet pipe 501 and the air inlet pipe 502 are both provided with a sealing ring 504. The outer ring surface of the sealing ring 504 is sleeved with an O-ring 505. The O-ring 505 is in sliding contact with the inner walls of the air outlet 105 and the air inlet 107. The O-ring 505 is the first seal, and the upper edge of the outer ring surface of the sealing ring 504 is provided with a top pressure inclined surface. The top pressure inclined surface corresponds to the pressure inclined surface 108 in position and matches in size. The pressure inclined surface 108 is squeezed by the top pressure inclined surface to form a slope seal, which is the second seal. In order to enable the top pressure inclined surface to press the pressure inclined surface 108, and at the same time to connect the integrated main gas collecting pipeline 1 and the base plate 2, a pull rod 3 is provided on the base plate 2, and the upper end of the pull rod 3 has a screw section. A through hole 109 corresponding to the position of the pull rod 3 is opened on the integrated main gas collecting pipeline 1. The pull rod 3 passes through the through hole 109, and the nut 4 is engaged with the threaded section of the pull rod 3, and the nut 4 is used to press the through hole 109 downward; the lower end of the positioning hole of the base plate 2 is connected to the outside world through a threaded hole, and a clamping bolt 6 is engaged in the threaded hole, and the end face of the clamping bolt 6 is in sliding contact with the lower bottom surface of the outlet pipe 501 and the inlet pipe 502.

[0025] The working principle of this utility model:

[0026] The gas to be cooled enters the diffuser ring 103 from the gas collection pipeline inlet 101 of the integrated main gas collection pipeline 1, then enters the gas inlet pipe 502 of the spiral core 5, passes through the microtubes 503, enters the gas outlet 501, and then enters the gas collection ring 104 through the gas outlet 105 and the connecting pipe 106, leaving the precooler at the gas collection pipeline outlet 102. The cooling gas enters the heat exchange core from the cooling air inlet of the integrated main gas collection pipeline 1, passes through the outer wall of the microtubes 503. The triangular staggered arrangement of the microtubes 503 increases the turbulence of the cooling air. The cooling air exchanges heat with the high-temperature gas inside the microtubes 503 through the inter-wall heat exchange before leaving the precooler.

[0027] When the spiral core 5 needs to be maintained, the nut 4 is removed and the integrated main gas collection pipeline 1 is removed from the pull rod 3. The spiral core 5 can be taken out. When replacing the new spiral core 5, the outlet pipe 501 and the inlet pipe 502 are inserted into the corresponding positioning holes on the bottom plate 2. The through-hole 109 of the integrated main gas collection pipeline 1 is aligned with the pull rod 3 and installed. The upper ends of the outlet pipe 501 and the inlet pipe 502 can enter the outlet port 105 and the inlet port 107. The joint is sealed with the O-ring 505. The nut 4 is screwed onto the threaded section of the pull rod 3 and locked to complete the installation of the integrated main gas collection pipeline 1. The tightening bolt 6 is screwed so that the top pressure bevel presses against the pressure bevel 108 to achieve bevel sealing. The replacement and maintenance of the spiral core 5 are completed.

[0028] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0029] Components not described in detail herein are prior art.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel detachable micro-tube precooler, comprising an integrated main gas collecting pipeline (1) and a bottom plate (2), wherein a spiral core (5) is connected between the integrated main gas collecting pipeline (1) and the bottom plate (2), and characterized in that: The bottom plate (2) is also provided with a pull rod (3), and the integrated total gas collection pipeline (1) is provided with a through hole (109) corresponding to the position of the pull rod (3) and matching in size, and the pull rod (3) is in sliding contact in the through hole (109) and is connected with a locking mechanism; the integrated total gas collection pipeline (1) is provided with a scattered gas ring bin (103) and a gas collection ring bin (104), the scattered gas ring bin (103) is connected to a gas collection pipeline inlet (101), and the gas collection ring bin (104) is connected to a gas collection pipeline outlet (102), and the scattered gas ring bin (103) and the gas collection ring bin (104) are both connected to the spiral core (5); and there are multiple sealing mechanisms between the spiral core (5) and the integrated total gas collection pipeline (1).

2. The novel detachable microtube precooler according to claim 1, characterized in that: The upper end of the pull rod (3) has a threaded section, the threaded section is in sliding contact in the through hole (109) and is engaged with a nut (4), and the nut (4) is in sliding contact with the top surface of the through hole (109).

3. The novel detachable microtube precooler according to claim 1, characterized in that: The spiral core (5) comprises an air outlet pipe (501) and an air inlet pipe (502), wherein the air outlet pipe (501) and the air inlet pipe (502) are both tubular structures with one end open, and the side walls of the air outlet pipe (501) and the air inlet pipe (502) are connected via a microtube (503).

4. The novel detachable microtube precooler according to claim 3, characterized in that: The integrated main gas collection pipeline (1) is provided with an air outlet (105) and an air inlet (107), the air inlet (107) is connected to the scattered gas ring silo (103), the air outlet pipe (501) is inserted into the air outlet (105), and the air outlet (105) and the gas collection ring silo (104) are connected via a connecting pipe (106); the air inlet pipe (502) is inserted into the air inlet (107), and the air inlet pipe (502) and the scattered gas ring silo (103) are connected.

5. The novel detachable microtube precooler according to claim 4, characterized in that: The outer walls of the open ends of the air outlet pipe (501) and the air inlet pipe (502) are both connected with sealing rings (504), and an O-ring (505) is sheathed on the outer surface of the sealing ring (504). The O-ring (505) is in sliding contact with the inner walls of the air outlet (105) and the air inlet (107); a top pressure inclined surface is provided on the upper edge of the sealing ring (504), and a pressure inclined surface (108) is provided inside the air outlet (105) and the air inlet (107). The top pressure inclined surface and the pressure inclined surface (108) are positioned correspondingly and in sliding contact.

6. The novel detachable microtube precooler according to claim 5, characterized in that: The bottom plate (2) has a first positioning hole and a second positioning hole, the air outlet pipe (501) is in sliding contact with the first positioning hole, and the air inlet pipe (502) is in sliding contact with the second positioning hole. The first positioning hole and the second positioning hole are both connected to the outside world through a clamping threaded hole. A clamping bolt (6) is engaged in the clamping threaded hole, and the clamping bolt (6) is in sliding contact with the bottom surface of the air outlet pipe (501) and the air inlet pipe (502).

7. The novel detachable microtube precooler according to claim 3, characterized in that: The communicating air holes (506) of the air inlet pipe (502) and the microtube (503) are arranged in a triangular staggered pattern.

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