Switching section

Abstract

The invention relates to the technical field of aerodynamic test devices, in particular to a switching section, which comprises a switching section body, a first flow channel, a second flow channel, a first flow channel and a second flow channel, and the cooling part is arranged on the switching section body and is used for cooling the gas in the first flow channel. Through the arrangement, under the condition that the test airflow is high-temperature airflow, heat exchange can be carried out through the cooling part and the high-temperature airflow to reduce the temperature of the test airflow, so that thermal deformation of the switching section under scouring of the high-temperature airflow is avoided, the pneumatic contour precision is prevented from being influenced, the stability and the reliability are improved, and the service life of the switching section is prolonged.

Description

Technical Field

[0001] This disclosure relates to the technical field of aerodynamic testing apparatus, and more particularly to a transition section. Background Technology

[0002] Currently, in aerodynamic testing, it is common to encounter situations where drive equipment needs to be connected to the test section via an adapter section. However, when the test airflow temperature is too high, existing adapter sections are difficult to adapt to high-temperature conditions, easily leading to structural deformation and reduced service life.

[0003] Therefore, it is necessary to propose a transition segment to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] This disclosure aims to address at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, this disclosure proposes a transition segment.

[0006] In view of this, a transition segment is proposed according to an embodiment of the present disclosure, comprising: The transition section body has a first flow channel formed inside it; A cooling section is provided on the aforementioned transition section body for cooling the gas within the aforementioned flow channel.

[0007] In one feasible implementation, the aforementioned transition section body includes: A first housing, wherein the first flow channel is formed inside the first housing; The second housing is fitted onto the first housing, and a cavity is formed between the first housing and the second housing, and the cooling unit is disposed in the cavity; A first adapter flange is disposed at the first end of the second housing, and a second flow channel is formed inside the first adapter flange, which is connected to the first flow channel. A second transition flange is disposed at the second end of the second housing. A third flow channel is formed inside the second transition flange, and the third flow channel is connected to the first flow channel.

[0008] In one feasible implementation, the cross-sections of the first housing and the second housing are both square, the outer contour of the first adapter flange is circular, and along the direction from the first adapter flange to the second adapter flange, the inner contour of the first adapter flange transitions from circular to square through a transition section; the outer and inner contours of the second adapter flange are both square.

[0009] In one feasible implementation, the transition section is formed by splicing multiple arc-shaped plates, and the curvature of the arc-shaped plates gradually decreases along the direction from the first transition flange to the second transition flange.

[0010] In one feasible implementation, the cooling unit includes: The liquid inlet is located at the aforementioned first adapter flange; The liquid outlet is located at the aforementioned second adapter flange; A partition bar is provided in the cavity to separate the cavity into a liquid channel. The inlet end of the liquid channel is connected to the inlet port, and the outlet end of the liquid channel is connected to the outlet port. Coolant enters the liquid channel through the inlet port and flows out from the outlet port.

[0011] In one feasible implementation, multiple spacers are provided, and the multiple spacers are arranged at equal intervals in the cavity.

[0012] In one feasible implementation, multiple liquid inlets are provided and are evenly spaced around the periphery of the first transition flange; and / or multiple liquid outlets are provided and are spaced around the periphery of the second transition flange.

[0013] In one feasible implementation, the aforementioned transition section further includes: A reinforcing structure is provided on the outside of the aforementioned second housing.

[0014] In one feasible implementation, the above-mentioned reinforcing structure includes: A first reinforcing rib is disposed on the periphery of the second housing, and one end of the first reinforcing rib abuts against the first transition flange and the other end abuts against the second transition flange. The second reinforcing rib is sleeved on the second shell along the extending direction of the first reinforcing rib.

[0015] In one feasible implementation, the overall outline of the aforementioned transition section body is a frustum structure, and the aforementioned first transition flange is disposed at the tip of the aforementioned frustum structure.

[0016] Compared to existing technologies, this disclosure offers at least the following advantages: The adapter section provided in the embodiments of this disclosure includes an adapter section body and a cooling section. One end of the adapter section body is used to connect to a driving device, such as a compressor or heater, and the other end is used to connect to a test section, such as an optical viewing section or a measurement section. The adapter section body may have a first flow channel, allowing test airflow to be transported from the driving device to the test section through the first flow channel. The cooling section is located in the adapter section body. When the test airflow is high-temperature, heat exchange can occur between the cooling section and the high-temperature airflow, reducing the temperature of the test airflow. This prevents thermal deformation of the adapter section under the scouring of the high-temperature airflow, avoids affecting the aerodynamic profile accuracy, improves stability and reliability, and extends the service life of the adapter section. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of exemplary embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this disclosure. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic structural diagram of a transition section according to an embodiment of this disclosure; Figure 2 A schematic cross-sectional view of a transition section according to an embodiment of this disclosure; Figure 3 This is a schematic assembly diagram of a first housing and a cooling section according to one embodiment of the present disclosure.

[0018] in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100 Adapter section, 110 Adapter section body, 111 First housing, 112 Second housing, 113 First adapter flange, 1131 First liquid collection chamber, 1132 Arc plate, 114 Second adapter flange, 1141 Second liquid collection chamber, 120 Cooling section, 121 Liquid inlet, 122 Liquid outlet, 123 Spacer bar, 130 Reinforcing structure, 131 First reinforcing rib, 132 Second reinforcing rib. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is intended to aid in understanding the invention, but does not constitute a limitation thereof. The specific structural and functional details disclosed herein are merely for describing exemplary embodiments of the invention. However, the invention can be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0020] like Figures 1 to 3 As shown, according to an embodiment of the present disclosure, a transition section 100 is provided, including: a transition section body 110, wherein a first flow channel is formed inside the transition section 100; and a cooling section 120 disposed in the transition section body 110 for cooling the gas in the first flow channel.

[0021] It is understood that the adapter section 100 provided in this embodiment includes an adapter section body 110 and a cooling section 120. One end of the adapter section body 110 is used to connect to a drive device, such as a compressor or heater, and the other end is used to connect to a test section, such as an optical viewing section or a measurement section. The adapter section body 110 may have a first flow channel to allow test airflow to be transported from the drive device to the test section. The cooling section 120 is disposed on the adapter section body 110. When the test airflow is a high-temperature airflow, heat exchange can occur between the cooling section 120 and the high-temperature airflow to reduce the temperature of the test airflow. This prevents the adapter section 100 from undergoing thermal deformation under the scouring of the high-temperature airflow, avoids affecting the aerodynamic profile accuracy, improves stability and reliability, and extends the service life of the adapter section 100.

[0022] In some examples, such as Figures 1 to 3 As shown, the aforementioned transition section body 110 includes: a first housing 111, the interior of which a first flow channel is formed; a second housing 112, fitted onto the first housing 111, a cavity being formed between the first housing 111 and the second housing 112, the cooling section 120 being disposed in the cavity; a first transition flange 113, disposed at the first end of the second housing 112, the interior of which a second flow channel is formed, the second flow channel being connected to the first flow channel; and a second transition flange 114, disposed at the second end of the second housing 112, the interior of which a third flow channel is formed, the third flow channel being connected to the first flow channel.

[0023] It is understood that the transition section body 110 may be provided with a first housing 111, a second housing 112, a first transition flange 113, and a second transition flange 114. The second housing 112 is fitted onto the first housing 111 to form a cavity between the first housing 111 and the second housing 112, within which the cooling unit 120 can be installed. This improves the overall integration of the transition section 100, eliminates the need for external cooling equipment, reduces space occupation, and ensures that the cooling unit 120 and the high-temperature airflow are separated only by the first housing 111, improving heat exchange efficiency. The first transition flange 113 is located at the first end of the second housing 112. The transition section body 110 can be connected to the drive device through the first transition flange 113. A second flow channel is formed inside the first transition flange 113, communicating with the first flow channel, allowing the test airflow from the drive device to flow into the first flow channel through the second flow channel. The second transition flange 114 is located at the second end of the second housing 112. The transition section body 110 can be connected to the test section through the second transition flange 114. A third flow channel is formed inside the second transition flange 114. The third flow channel is connected to the first flow channel so that the test airflow flowing into the first flow channel flows into the test section through the third flow channel.

[0024] It should be noted that the first transition flange 113 and the second transition flange 114 can be selected according to the shape of the transition interface of the drive equipment and the test section. For example, both can be round flanges, or both can be square flanges, or one can be a round flange and the other can be a square flange, etc. The selection can be made according to specific requirements to improve applicability.

[0025] It should be noted that the cross-section of the first housing 111 can be adjusted according to the requirements of the aerodynamic test.

[0026] In some examples, such as Figures 1 to 3 As shown, the cross-section of the first housing 111 and the cross-section of the second housing 112 are both square. The outer contour of the first transition flange 113 is circular, and along the direction from the first transition flange 113 to the second transition flange 114, the inner contour of the first transition flange 113 transitions from circular to square through a transition section. The outer and inner contours of the second transition flange 114 are both square.

[0027] It is understood that the cross-sections of the first housing 111 and the second housing 112 can be of the same shape, both being square, and the first transition flange 113 can be a circular flange to make its outer contour circular. Furthermore, along the direction from the first transition flange 113 to the second transition flange 114, the inner contour of the first transition flange 113 can transition from circular to square via a transition section to adapt to the square structure of the second housing 112. This ensures that the test airflow delivered from the drive equipment to the first flow channel is smoothly and unimpeded when passing through the first transition flange 113, avoiding the generation of eddies that could affect the aerodynamic test and improving stability. The second transition flange 114 can be a square flange, with both its outer and inner contours being square to adapt to the square structure of the second housing 112.

[0028] In some examples, such as Figure 2 As shown, the transition section is formed by splicing multiple arc-shaped plates 1132, and the curvature of the arc-shaped plates 1132 gradually decreases along the direction from the first transition flange 113 to the second transition flange 114.

[0029] Understandably, the transition section can be provided with multiple arc-shaped plates 1132. The sides of the arc-shaped plates 1132 are arc-shaped surfaces, and the curvature of the arc-shaped plates 1132 gradually decreases along the direction from the first transition flange 113 to the second transition flange 114, so as to gradually change from an arc shape to a triangle. Thus, by welding multiple arc-shaped plates 1132 together, a transition structure that gradually changes from a circle to a square is formed to adapt to the square structure of the second housing 112. This ensures that the test airflow delivered from the drive equipment to the first flow channel is delivered smoothly and unimpeded when passing through the first transition flange 113, avoiding the generation of eddies, effectively reducing airflow channel losses, avoiding affecting the aerodynamic test, ensuring the quality of the test airflow entering the test section, and improving stability.

[0030] In some examples, such as Figure 1 and Figure 3 As shown, the cooling section 120 includes: a liquid inlet 121 disposed on the first transition flange 113; a liquid outlet 122 disposed on the second transition flange 114; and a spacer 123 disposed in the cavity to partition the cavity into a liquid channel. The liquid inlet end of the liquid channel is connected to the liquid inlet 121, and the liquid outlet end of the liquid channel is connected to the liquid outlet 122. Coolant enters the liquid channel through the liquid inlet 121 and flows out from the liquid outlet 122.

[0031] It is understood that the cooling section 120 may be provided with a liquid inlet 121, a liquid outlet 122, and a spacer 123. The spacer 123 is disposed within the cavity, and its extending direction is consistent with the extending direction of the first housing 111, dividing the cavity into multiple liquid channels. The liquid inlet 121 may be disposed on the first transition flange 113, and a first liquid collecting chamber 1131 is formed within the first transition flange 113. The liquid inlet 121 is connected to the liquid inlet end of the liquid channel through the first liquid collecting chamber 1131. The liquid outlet 122 may be disposed on the second transition flange 114, and a second liquid collecting chamber 1141 is formed within the second transition flange 114. The liquid outlet 122 is connected to the liquid outlet end of the liquid channel through the second liquid collecting chamber 1141. With this configuration, the cryogenic coolant can enter the cavity through the inlet 121 and, under the obstruction of the baffle, flow into each liquid channel to exchange heat with the high-temperature test gas. The cooled coolant, now at a higher temperature, flows out from the outlet 122, forming a cooling circuit. By placing the cooling unit 120 inside the cavity, it is easier to exchange heat with the test gas inside the first housing 111, and it eliminates the need for external cooling equipment, reducing space requirements.

[0032] It should be noted that one side of the spacer 123 can be connected to the first housing 111 and the other side can be connected to the second housing 112. Thus, the spacer 123 can support the second housing 112 and improve the overall structural strength of the transition section 100, so as to ensure that the transition section 100 can withstand the high internal pressure and thermal stress caused by the temperature gradient, and ensure the reliability and shape stability of the transition section 100 in long-term operation.

[0033] In some examples, such as Figure 2 As shown, multiple spacers 123 are provided, and the multiple spacers 123 are arranged at equal intervals in the cavity.

[0034] It is understandable that multiple spacers 123 can be provided, and multiple spacers 123 can be arranged at equal intervals in the cavity to separate multiple liquid channels. Coolant can enter each liquid channel to cool the test gas in all directions, ensure the uniformity of the coolant flow field, avoid local overheating, improve cooling efficiency, thereby protecting the overall structure of the transition section 100 and extending its service life.

[0035] In some examples, such as Figure 1 As shown, multiple liquid inlets 121 are provided and are evenly spaced around the periphery of the first transition flange 113; and / or multiple liquid outlets 122 are provided and are spaced around the periphery of the second transition flange 114.

[0036] Understandably, multiple inlets 121 can be provided, and these inlets 121 can be evenly spaced around the periphery of the first transition flange 113. This arrangement allows coolant to be simultaneously supplied to the cavity from multiple inlets 121, enabling the coolant to quickly enter all liquid channels, ensuring comprehensive cooling of the test gas within the first housing 111, increasing the inlet flow rate, improving cooling efficiency, and preventing localized overheating. Simultaneously, multiple outlets 122 can be provided, spaced around the periphery of the second transition flange 114, so that the outlet flow rate matches the inlet flow rate, thereby improving the liquid circulation efficiency of the entire cooling circuit.

[0037] It should be noted that when the first transition flange 113 is a circular flange, multiple liquid inlets 121 are arranged around the periphery of the circular flange, and the included angles of adjacent liquid inlets 121 are equal. For example, four liquid inlets 121 are provided, evenly distributed around the periphery of the circular flange. When the second transition flange 114 is a square flange, multiple liquid outlets 122 can be provided around the periphery of the square flange. For example, four liquid outlets 122 can be provided, with three liquid outlets 122 equally spaced on one side of the square flange, and the other liquid outlet 122 located in the middle of the other side of the square flange.

[0038] It should be noted that during aerodynamic testing, the flow rate and pressure of the coolant can be adjusted according to the temperature and pressure of the test airflow to improve the cooling effect and temperature control of the transition section 100, thereby ensuring test stability.

[0039] In some examples, such as Figure 1 As shown, the aforementioned transition section 100 further includes a reinforcing structure 130, which is disposed on the outside of the aforementioned second housing 112.

[0040] It is understandable that the transition section 100 may also be provided with a reinforcing structure 130 to improve the overall structural strength of the transition section 100. Specifically, the reinforcing structure 130 may be provided on the outer wall of the second housing 112. The reinforcing structure 130 enables the transition section body 110 to withstand higher internal pressure and thermal stress caused by temperature gradient, ensuring long-term stable operation of the transition section 100, as well as shape stability and improving reliability.

[0041] In some examples, such as Figure 1 As shown, the reinforcing structure 130 includes: a first reinforcing rib 131, disposed on the periphery of the second housing 112, with one end of the first reinforcing rib 131 abutting against the first transition flange 113 and the other end abutting against the second transition flange 114; and a second reinforcing rib 132, sleeved on the second housing 112 along the extending direction of the first reinforcing rib 131.

[0042] Understandably, the reinforcing structure 130 may be provided with a first reinforcing rib 131 and a second reinforcing rib 132. Specifically, the first reinforcing rib 131 may be provided on the periphery of the second housing 112, and the first reinforcing rib 131 may extend to the first end and the second end of the transition section body 110, so that it can abut and press against the first transition flange 113 when the first transition flange 113 is installed, and abut and press against the second transition flange 114 when the second transition flange 114 is installed, thereby improving the support for the first transition flange 113 and the second transition flange 114, and improving the overall structural strength of the transition section 100 in the length direction. The inner contour of the second reinforcing rib 132 may match the outer contour of the second housing 112 to fit onto the second housing 112, and the second reinforcing rib 132 may be parallel to the first transition flange 113 and the second transition flange 114, thereby improving the overall structural strength of the transition section 100 in the width direction. Furthermore, multiple first reinforcing ribs 131 and second reinforcing ribs 132 can be provided to further improve the overall structural strength of the transition section 100. By providing the first reinforcing ribs 131 and second reinforcing ribs 132, the transition section 100 can withstand higher internal pressure and thermal stress caused by temperature gradients, ensuring long-term stable operation of the transition section 100, as well as shape stability and improving reliability.

[0043] In some examples, such as Figures 1 to 3 As shown, the overall outline of the aforementioned transition section body 110 is a frustum structure, and the aforementioned first transition flange 113 is disposed at the tip of the aforementioned frustum structure.

[0044] It is understandable that the overall outline of the transition section body 110 can be a frustum structure to meet some aerodynamic test conditions, and the first transition flange 113 is located at the tip of the frustum structure to transition to the drive equipment, and the second transition flange 114 is located at the large end of the frustum structure to transition to the test section.

[0045] It should be understood that the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Although the terms "first," "second," etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0046] It should be understood that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0047] It should be understood that in the description of this invention, the terms "upper," "vertical," "inner," "outer," etc., indicate the orientation or positional relationship as commonly placed when the disclosed product is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments of the invention. As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” “containing,” and / or “including” as used herein specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not exclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0050] Specific details are provided in the following description to provide a complete understanding of the exemplary embodiments. However, those skilled in the art will understand that the exemplary embodiments can be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may be omitted in the depiction of non-essential details to avoid obscuring the exemplary embodiments.

[0051] The above are merely specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

[0052] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art.

Claims

1. A transition section, characterized in that, include: The transition section body has a first flow channel formed inside it; A cooling section is provided on the main body of the transition section for cooling the gas in the first flow channel.

2. The transition section according to claim 1, characterized in that, The transition section body includes: A first housing, wherein the first flow channel is formed inside the first housing; A second housing is fitted onto the first housing, and a cavity is formed between the first housing and the second housing, with the cooling unit disposed in the cavity; A first adapter flange is disposed at the first end of the second housing, and a second flow channel is formed inside the first adapter flange, which is connected to the first flow channel; A second adapter flange is disposed at the second end of the second housing, and a third flow channel is formed inside the second adapter flange, which is connected to the first flow channel.

3. The transition section according to claim 2, characterized in that, The cross-sections of the first housing and the second housing are both square. The outer contour of the first adapter flange is circular, and along the direction from the first adapter flange to the second adapter flange, the inner contour of the first adapter flange transitions from circular to square through a transition section. The outer and inner contours of the second adapter flange are both square.

4. The transition section according to claim 3, characterized in that, The transition section is formed by splicing multiple arc-shaped plates, and the curvature of the arc-shaped plates gradually decreases along the direction from the first transition flange to the second transition flange.

5. The transition section according to claim 2, characterized in that, The cooling unit includes: The liquid inlet is located on the first adapter flange; The liquid outlet is located on the second adapter flange; A partition bar is disposed in the cavity to divide the cavity into a liquid channel. The inlet end of the liquid channel is connected to the inlet port, and the outlet end of the liquid channel is connected to the outlet port. Coolant enters the liquid channel through the inlet port and flows out from the outlet port.

6. The transition section according to claim 5, characterized in that, Multiple spacers are provided, and the multiple spacers are arranged at equal intervals in the cavity.

7. The transition section according to claim 5, characterized in that, The liquid inlet is provided in multiple locations, evenly spaced around the periphery of the first adapter flange; and / or the liquid outlet is provided in multiple locations, spaced around the periphery of the second adapter flange.

8. The transition section according to any one of claims 2 to 7, characterized in that, Also includes: A reinforcing structure is provided on the outside of the second housing.

9. The transition section according to claim 8, characterized in that, The reinforcing structure includes: A first reinforcing rib is disposed on the periphery of the second housing, with one end of the first reinforcing rib abutting against the first transition flange and the other end abutting against the second transition flange; The second reinforcing rib is fitted onto the second housing along the extending direction of the first reinforcing rib.

10. The transition section according to claim 3, characterized in that, The overall outline of the transition section body is a frustum structure, and the first transition flange is located at the tip of the frustum structure.

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