An integrated functional base for carrying heat exchange pipes

Abstract

The present invention proposes an integrated functional base for carrying heat exchange pipes, the main structure of which is annular, and the upper and lower end surfaces of the base are planes; the inner ring of the base is a circular channel structure, and 4 lifting ears and 11 support rod fixed blocks are distributed at the bottom; the outer ring contour of the base is a waist-shaped curved surface structure, and the middle position is concave, and 11 thick reinforcing ribs and inlet and outlet main pipes are evenly distributed at the concave position. The inlet and outlet main pipes are also connected to the two annular flow channels inside the base, and each of the annular flow channels has 11 small holes connected to the lower end surface of the base. The overall base structure is formed by 3D printing integration, and the original two inlet and outlet first-level annular pipes are changed into an integrated part, which reduces the difficulty of processing and reduces the risk of defects at the connection position; the concave design of the outer ring of the overall base optimizes the structure and reduces the weight; the total inlet and outlet integrated port on the overall base is designed as a standard interface, which is convenient for the strong precooler to be connected with other components in the power system.

Description

Technical Field

[0001] The present invention provides an integrated functional base for carrying heat exchange pipes, which is suitable for the integrated assembly of high-temperature alloy thin-wall capillaries, and its main function is to connect all thin-wall capillaries on the heat exchanger. It belongs to the field of aerospace science and technology. Background Art

[0002] As the core component of the hypersonic flight power system, the strong precooler has always been a hot topic of research at home and abroad. The core heat exchange structure of the strong precooler is mainly composed of a thin-walled capillary array arrangement. According to the structural characteristics of the power system, it is mostly a ring structure of the array, and many thin-walled capillary arrays are arranged and connected with the inlet and outlet diodes (the pipe connecting the thin-walled capillary is defined as a diode; the pipe connecting all diodes is defined as a primary tube). In order to meet the heat exchange efficiency, the number of inlet and outlet diodes is usually multiple groups. Therefore, it is necessary to design a special structure to connect multiple groups of inlet and outlet diodes in series, so that the cooling medium in the thin-walled capillary can flow through the inlet and outlet diodes, thereby realizing the heat exchange of the heat exchange unit. This has become the top priority of the research and development of the entire strong precooling hypersonic flight power technology.

[0003] According to the complexity of the assembly of the inlet and outlet diode structure of the precooler in the strong precooling hypersonic flight power system, it is necessary to design a special integrated functional base for fixedly connecting all the inlet and outlet diodes, thereby connecting the capillary heat exchange unit to ensure the precise positioning of the thin-walled capillary and the efficient circulation of the cooling medium. Currently, no device can meet this requirement. The present invention provides an integrated functional base for carrying the heat exchange pipe to solve the existing problem. Summary of the invention

[0004] (1) Purpose

[0005] In order to ensure that the thin-walled capillary tube and the inlet and outlet diode components of the strong precooler can be accurately installed on the precooler, and to ensure that the inlet and outlet diodes are connected, and to improve the heat exchange efficiency, it is necessary to design a special integrated functional base for fixing the thin-walled capillary tube and the inlet and outlet diode components to ensure that the thin-walled capillary tube is accurately positioned and can efficiently circulate the cooling medium. The present invention provides an integrated functional base for carrying heat exchange pipes.

[0006] (2) Technical solution

[0007] The present invention provides an integrated functional base for carrying heat exchange pipes, and its technical solution is as follows:

[0008] Figure 1 to Figure 6It is a structural diagram of different orientations of an integrated functional base for carrying heat exchange exhaust pipes. The main structure is annular, and the upper and lower end faces of the base are flat; the inner circle of the base is a circular channel structure, and 4 lifting ears and 11 support rod fixed blocks are distributed at the bottom; the outer circle of the base is a waist-shaped curved surface structure with a depression in the middle, and 11 2mm thick reinforcing ribs and inlet and outlet main pipes are evenly distributed in the depression. The inlet and outlet main pipes are also connected to the two annular flow channels inside the base, and each of the annular flow channels has 11 small holes connected to the lower end face of the base.

[0009] The base has a structural form such as Figure 1 As shown, it is made by 3D printing, made of high-temperature alloy, with an overall base height of 56mm, an inner channel diameter of 206mm, and a main body outer contour size of 386mm. Figure 2 This is a schematic diagram of the side structure of the base. It can be seen from the figure that there is a symmetrical chamfer of 8mm on the outer circle of the upper end surface of the base. The lifting ears and support rod fixing blocks on the outer periphery of the base are located on the lower side of the base. The number of lifting ears and support rod fixing blocks can be adjusted according to the size of the base. The sizes of the inlet and outlet main pipes are respectively and They are located at different heights and at a certain angle in the middle of both sides of the base. The specific position can be adjusted according to the inlet and outlet direction of the external cooling medium. The outer ring structure of the base is a reinforcing rib plus a waist-shaped curved surface structure. This optimized structure reduces the weight of the entire base. Figure 3 This is a schematic diagram of the front structure of the base, from which the specific positions of the support rod fixing blocks, lifting ears and inlet and outlet main pipes on the lower end of the base can be seen. The 11 support rod fixing blocks are evenly distributed, the 4 lifting ears are roughly distributed in four positions to avoid interference, and the inlet and outlet main pipes are distributed at obtuse angles. Figure 4 This is a schematic diagram of the back structure of the base. It can be seen that the lower end surface of the base has 11 countersunk holes in the inner and outer layers with diameters of 228mm and 339mm, respectively. The inner circular hole has a diameter of 8.4mm and is connected to the annular flow channel inside the base; the countersunk diameter is 11mm and the depth is 2mm, which is mainly connected to the inlet diode; the outer circular hole has a diameter of 18mm and is connected to the annular flow channel inside the base; the countersunk diameter is 21mm and the depth is 2mm, which is mainly connected to the outlet diode. The inner and outer countersunk holes are mainly used to place sealing gaskets to facilitate sealing when connecting diodes. There are 11 support rod fixing blocks evenly distributed on the base. The support rod block thickness is 8mm. A threaded blind hole with a diameter of 10mm and a depth of 4mm is processed in the middle of the bottom of the support rod fixing block for connecting the support rod of the precooler outer frame. Figure 5 and Figure 6The cross-sectional view of the base at different heights shows that there are two annular flow channels inside the base, and the two annular flow channels are not at the same height. The center plane of the inner annular flow channel is 37mm higher than the bottom surface of the base, and the flow channel diameter is 14mm. The center plane of the outer annular flow channel is 17mm higher than the bottom surface of the base, and the flow channel diameter is 22mm. The annular flow channel with a diameter of 14mm is connected to the inlet manifold, and the annular flow channel with a diameter of 22mm is connected to the outlet manifold. Eleven circular holes are evenly distributed below the two annular flow channels, each connected to the countersunk hole on the lower end face of the base. The integrated structure of the annular flow channel, the inlet and outlet manifolds, and the countersunk hole on the lower end face of the base reduces the number of parts of the overall structure on the one hand, and reduces the problem of primary pipe connection on the other hand, reducing the failure risk of primary pipe connection.

[0010] 3) Advantages and effects

[0011] According to the complexity of the assembly of the inlet and outlet diode structure of the precooler in the strong precooling hypersonic flight power system, the present invention provides an integrated functional base for carrying the heat exchange pipe. The advantages are mainly reflected in: 1. The overall base structure is formed by 3D printing, and the original two inlet and outlet first-level circular ring pipes are changed into an integrated piece, which reduces the difficulty of processing and reduces the risk of defects at the connection position; 2. The outer ring of the overall base is concave, so that the structure is optimized and the weight is reduced; 3. The total inlet and outlet integrated port on the overall base is designed as a standard interface, which is convenient for the strong precooler to be connected with other components in the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the isometric structure of the base of the present invention.

[0013] Figure 2 It is a schematic diagram of the side structure of the base of the present invention.

[0014] Figure 3 It is a schematic diagram of the front structure of the base of the present invention.

[0015] Figure 4 It is a schematic diagram of the back structure of the base of the present invention.

[0016] Figure 5 It is a schematic diagram of the cross-sectional structure of the base of the present invention.

[0017] Figure 6 It is a schematic diagram of the lower cross-sectional structure of the base of the present invention. DETAILED DESCRIPTION

[0018] See also Figure 1-6As shown, the present invention is an integrated functional base for carrying heat exchange exhaust pipes, the main structure of which is annular, and the upper and lower end faces of the base are flat; the inner circle of the base is a circular channel structure, and 4 lifting ears and 11 support rod fixing blocks are distributed at the bottom; the outer circle contour of the base is a waist-shaped curved surface structure, and the middle position is concave, and 11 2mm thick reinforcing ribs and inlet and outlet main pipes are evenly distributed in the concave position, and the inlet and outlet main pipes are also respectively connected to the two annular flow channels inside the base, and each of the annular flow channels has 11 small holes connected to the lower end face of the base.

[0019] The base has a structural form such as Figure 1 As shown, it is made by 3D printing and is made of high-temperature alloy. The overall height of the base is 56mm, the inner channel diameter is 206mm, and the outer contour size of the main body is 386mm.

[0020] Figure 2 This is a schematic diagram of the side structure of the base. It can be seen from the figure that there is a symmetrical chamfer of 8mm on the outer circle of the upper end surface of the base. The lifting ears and support rod fixing blocks on the outer periphery of the base are located on the lower side of the base. The number of lifting ears and support rod fixing blocks can be adjusted according to the size of the base. The sizes of the inlet and outlet main pipes are respectively and They are located at different heights and at a certain angle in the middle of both sides of the base. The specific position can be adjusted according to the inlet and outlet direction of the external cooling medium. The outer ring structure of the base is a reinforcing rib plus a waist-shaped curved surface structure. This optimized structure reduces the weight of the entire base.

[0021] Figure 3 This is a schematic diagram of the front structure of the base, from which the specific positions of the support rod fixing blocks, lifting ears and inlet and outlet main pipes on the lower end of the base can be seen. The 11 support rod fixing blocks are evenly distributed, the 4 lifting ears are roughly distributed in four positions to avoid interference, and the inlet and outlet main pipes are distributed at obtuse angles.

[0022] Figure 4 This is a schematic diagram of the back structure of the base. It can be seen that the lower end surface of the base has 11 countersunk holes in the inner and outer layers with diameters of 228mm and 339mm, respectively. The inner circular hole has a diameter of 8.4mm and is connected to the annular flow channel inside the base; the countersunk diameter is 11mm and the depth is 2mm, which is mainly connected to the inlet diode; the outer circular hole has a diameter of 18mm and is connected to the annular flow channel inside the base; the countersunk diameter is 21mm and the depth is 2mm, which is mainly connected to the outlet diode. The inner and outer countersunk holes are mainly used to place sealing gaskets to facilitate sealing when connecting diodes. There are 11 support rod fixing blocks evenly distributed on the base. The support rod block thickness is 8mm. A threaded blind hole with a diameter of 10mm and a depth of 4mm is processed in the middle of the bottom of the support rod fixing block for connecting the support rod of the precooler outer frame.

[0023] Figure 5 and Figure 6The cross-sectional view of the base at different heights shows that there are two annular flow channels inside the base, and the two annular flow channels are not at the same height. The center plane of the inner annular flow channel is 37mm higher than the bottom surface of the base, and the flow channel diameter is 14mm. The center plane of the outer annular flow channel is 17mm higher than the bottom surface of the base, and the flow channel diameter is 22mm. The annular flow channel with a diameter of 14mm is connected to the inlet manifold, and the annular flow channel with a diameter of 22mm is connected to the outlet manifold. Eleven circular holes are evenly distributed below the two annular flow channels, each connected to the countersunk hole on the lower end face of the base. The integrated structure of the annular flow channel, the inlet and outlet manifolds, and the countersunk hole on the lower end face of the base reduces the number of parts of the overall structure on the one hand, and reduces the problem of primary pipe connection on the other hand, reducing the failure risk of primary pipe connection.

[0024] After the base is processed, matching sealing gaskets are placed at the inner and outer countersunk holes of the base, and then the inner and outer inlet and outlet diodes of the precooler heat exchange module are installed at the countersunk holes. The inlet and outlet diodes are sealed and connected to the base through the action of the pull rod and the support rod fixing block; the inlet and outlet main pipes of the outer ring of the base are externally connected to the cooling medium inlet and outlet pipes. The working state of the entire base is: the cooling medium enters the annular flow channel with a diameter of 14mm inside the base through the inlet pipe assembly and the inlet main pipe, then flows through the inlet diode, and then flows into all the thin-walled capillaries through 11 inlet diodes, and finally flows back to the annular flow channel with a diameter of 22mm inside the base through 11 outlet diodes, and flows out from the outlet main pipe, thereby realizing the function of strong precooler heat exchange.

Claims

1. An integrated functional base for carrying heat exchange pipes, characterized in that: The main structure of the base is annular, and the upper and lower end surfaces of the base are flat; the inner circle of the base is a circular channel structure, with 4 lifting ears and 11 support rod fixed blocks distributed at the bottom; the outer circle of the base is a waist-shaped curved surface structure, with a concave position in the middle, and 11 thick reinforcing ribs and inlet and outlet main pipes are evenly distributed in the concave position. The inlet and outlet main pipes are also connected to the two annular flow channels inside the base, the two annular flow channels are the inner annular flow channel and the outer annular flow channel, and the two annular flow channels are not at the same height, the inner annular flow channel is connected to the inlet main pipe, and the outer annular flow channel is connected to the outlet main pipe; 11 circular holes are evenly distributed below the two annular flow channels and are connected to the countersunk holes on the lower end surface of the base; The bottom surface of the base has 11 countersunk holes on both the inner and outer layers, wherein the inner countersunk holes are connected to the inner ring flow channel inside the base; the inner countersunk holes are connected to the inlet diode; the outer countersunk holes are connected to the outer ring flow channel inside the base; the outer countersunk holes are connected to the outlet diode; the inner and outer countersunk holes are used to place sealing gaskets to facilitate sealing when connecting the diode; Among them, after the base is processed, matching sealing gaskets are placed at the inner and outer countersunk holes of the base, and then the inner inlet diode and the outer outlet diode of the precooler heat exchange module are respectively installed at the countersunk holes, and the inlet and outlet diodes are sealed and connected to the base through the support rod and the support rod fixed block; the inlet and outlet main pipes of the outer circle of the base are externally connected to the cooling medium inlet and outlet pipes; the inlet and outlet main pipes are respectively located at different heights in the middle of both sides of the base and at a certain angle.

2. The integrated functional base for carrying heat exchange pipes according to claim 1, characterized in that: The overall height of the base is 56mm, the diameter of the inner circular channel is 206mm, and the outer contour size of the main body is 386mm.

3. The integrated functional base for carrying heat exchange pipes according to claim 1, characterized in that: The outer circle of the upper end surface of the base has symmetrical chamfers; the lifting ears and the support rod fixing blocks on the outer periphery of the base are located on the lower side of the base.

4. An integrated functional base for carrying heat exchange pipes according to claim 1 or 3, characterized in that: The 11 support rod fixing blocks are distributed at equal distances, the 4 lifting ears are distributed in four directions to avoid interference, and the inlet and outlet main pipes are distributed at obtuse angles.

5. The integrated functional base for carrying heat exchange pipes according to claim 4, characterized in that: A threaded blind hole is processed in the middle of the bottom of the support rod fixing block for connecting the support rod of the precooler outer frame.

6. An integrated functional base for carrying heat exchange pipes according to claim 1 or 2, characterized in that: The base is made by 3D printing and is made of high-temperature alloy.

Images