An impact-resistant closure

Abstract

The utility model discloses a kind of anti-impact end, it is related to plate-fin heat exchanger technical field, including shell and baffle;Shell is equipped with the liquid inlet and liquid outlet of inside communication;Liquid inlet is opened in the side of shell towards core, and liquid inlet is sealed and communicated in the corresponding flow channel of core;Liquid outlet is set to the top of shell, and liquid outlet is sealed and communicated in the rear channel;Baffle is set on the inner wall of shell close to liquid inlet, and baffle is continuously set along the mouth part edge of liquid inlet;Baffle is extended to the center of liquid inlet towards, and it is inclined to inflow direction.The utility model provides a kind of anti-impact end by setting inclined baffle in the inner wall of liquid outlet, fluid is guided to the center area of liquid outlet, avoids high-pressure fluid impact weld between liquid outlet and core, improves the working stability of end.

Description

Technical Field

[0001] This utility model relates to the field of plate-fin heat exchanger technology, and in particular to an impact-resistant end cap. Background Technology

[0002] A plate-fin heat exchanger is a highly efficient and compact heat exchange device that enhances heat transfer through fins and separates fluid channels with baffles. A plate-fin heat exchanger consists of a core and end caps, with the end caps located at both ends of the core's flow channels. During operation, fluid enters the core from one end cap and, after heat exchange, flows into the other end cap. The end caps used for liquid outlet have multiple welds with the core and its internal structure. If the weld positions or internal curvature design are unreasonable, it will increase the local resistance to fluid outflow, leading to uneven stress on the structure and reducing the pressure-bearing capacity of the outlet end caps. If subjected to excessively high fluid pressure for extended periods, cracks and failures are likely to occur at the welds and other connection points.

[0003] Chinese patent application number 202223391530.2 discloses a plate-fin heat exchanger head that can uniformly distribute two-phase fluids. The head has a multi-layer structure and multiple movable connections, which are prone to cracking and failure under long-term high-pressure fluid. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention provides an impact-resistant end cap by setting an inclined baffle on the inner wall of the liquid outlet to guide the fluid to the central area of ​​the liquid outlet, thereby avoiding the impact of high-pressure fluid on the weld between the liquid outlet and the core and improving the working stability of the end cap.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides an impact-resistant end cap, comprising a shell and a baffle; the shell is provided with an inlet and an outlet communicating with the interior; the inlet is opened on the side of the shell facing the core, and the inlet is sealed and connected to the corresponding flow channel of the core; the outlet is located on the top of the shell, and the outlet is sealed and connected to the rear channel; the baffle is provided on the inner wall of the shell near the inlet, and the baffle is continuously arranged along the edge of the inlet; the baffle extends toward the center of the inlet and is inclined toward the flow direction.

[0006] The impact-resistant end cap provided by this utility model preferably has a cuboid shell structure; the inlet has a square cross-section in the flow direction; baffles are continuously arranged in segments along the edge of the square; the side of the baffle facing the flow direction is a flow-blocking surface; the flow-blocking surface is provided with a plurality of flow-slowing grooves; the flow-slowing grooves are opened along the flow-guiding direction of the flow-blocking surface; the plurality of flow-slowing grooves are arranged sequentially along the continuous setting direction of the baffles.

[0007] The impact-resistant end cap provided by this utility model preferably has a first surface on the side of the inlet facing the inner wall of the shell in the flow direction; the first surface is provided with a plurality of flow-slowing columns; one end of the flow-slowing column is connected to the first surface, the other end of the flow-slowing column extends toward the outlet, and the extension range of the flow-slowing column does not exceed the baffle; the axis of the flow-slowing column is parallel to the flow direction.

[0008] The impact-resistant end cap provided by this utility model preferably comprises a plurality of first columns and a plurality of second columns; the diameter of the first column is larger than the diameter of the second column; all the second columns are arranged in a matrix in the central area of ​​the first surface; and all the first columns are arranged sequentially around the periphery of all the second columns.

[0009] The impact-resistant end cap provided by this utility model preferably has a cavity inside the first column, and an opening communicating with the cavity is provided at the end of the first column facing the liquid outlet.

[0010] The above technical solution has the following advantages or beneficial effects: This utility model provides an impact-resistant end cap, relating to the field of plate-fin heat exchanger technology, comprising a shell and a baffle; the shell is provided with an inlet and an outlet communicating with the interior; the inlet is located on the side of the shell facing the core, and is sealed and connected to the corresponding flow channel of the core; the outlet is located at the top of the shell, and is sealed and connected to the downstream channel; the baffle is located on the inner wall of the shell near the inlet, and is continuously arranged along the edge of the inlet; the baffle extends towards the center of the inlet and is inclined towards the flow direction. This utility model provides an impact-resistant end cap by providing an inclined baffle on the inner wall of the outlet, guiding the fluid to the central area of ​​the outlet, avoiding high-pressure fluid impacting the weld between the outlet and the core, and improving the working stability of the end cap. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] Figure 1 A three-dimensional structural diagram of an impact-resistant end cap facing the flow channel side, provided in Embodiment 1 of this utility model; Figure 2 This is a structural diagram showing the distribution of the first and second columns of an impact-resistant end cap provided in Embodiment 1 of the present invention. Figure 1-2 It includes: 1. shell; 11. liquid inlet; 12. liquid outlet; 2. baffle; 21. slow flow channel; 3. first surface; 4. first column; 41. opening; 5. second column. Detailed Implementation

[0013] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0014] Example 1: like Figure 1-2 As shown: This utility model provides an impact-resistant end cap, including a housing 1 and a baffle 2; the housing 1 is provided with an inlet 11 and an outlet 12 communicating with the interior; the inlet 11 is opened on the side of the housing 1 facing the core, and the inlet 11 is sealed and connected to the corresponding flow channel of the core; the outlet 12 is disposed on the top of the housing 1, and the outlet 12 is sealed and connected to the rear channel; the baffle 2 is disposed on the inner wall of the housing 1 near the inlet 11, and the baffle 2 is continuously disposed along the edge of the opening of the inlet 11; the baffle 2 extends toward the center of the inlet 11 and is inclined toward the flow direction.

[0015] The impact-resistant end cap provided by this utility model is used as an outflow end cap and is sealed and installed at the outlet of the corresponding flow channel of the core. After flowing out of the flow channel, the fluid enters the interior of the shell 1 through the inlet 11. In the prior art, the end cap surrounds one end of the core and is sealed and connected. The fluid entering from the edge of the inlet 11 will directly impact the weld seam of the end cap on the opposite side along the flow direction. In this solution, due to the baffle 2, the fluid entering from the edge of the inlet 11 is first oriented and guided by the inclined baffle 2 to the center of the inlet 11, thereby avoiding the fluid directly impacting the weld seam at the edge of the opposite end cap.

[0016] The present invention provides an impact-resistant end cap by setting an inwardly inclined baffle 2 on the inner side of the inlet 11 edge, which guides the fluid to the center of the inlet 11, thereby avoiding the fluid directly impacting the weld seam at the edge of the end cap.

[0017] To further reduce the flow velocity of the edge fluid, in a preferred embodiment, the shell 1 is a cuboid structure; the inlet 11 has a square cross-section in the flow direction; the baffle 2 is continuously arranged in segments along the square edge; the side of the baffle 2 facing the flow direction is a flow-blocking surface; the flow-blocking surface has several flow-slowing grooves 21; the flow-slowing grooves 21 are opened along the flow-guiding direction of the flow-blocking surface; the several flow-slowing grooves 21 are arranged sequentially along the continuous arrangement direction of the baffle 2. When the end cap is working, its interior is constantly filled with flowing fluid. Therefore, the flow-slowing grooves 21 are also filled with fluid, forming a low-velocity viscous sublayer. When high-speed fluid flows through the flow-slowing grooves 21, they interact to generate small-scale turbulence, thereby offsetting part of the fluid velocity and not significantly disrupting the overall flow direction of the fluid.

[0018] To improve the uniformity of fluid flow to the outlet 12 and reduce the impact pressure on the housing 1, in a preferred embodiment, the side of the inlet 11 facing the inner wall of the housing 1 in the flow direction is a first surface 3. The first surface 3 is provided with several flow-slowing columns. One end of each flow-slowing column is connected to the first surface 3, and the other end extends towards the outlet 12, with the extension range not exceeding that of the baffle 2. The axis of the flow-slowing column is parallel to the flow direction. The fluid directed by the baffle 2 converges with the fluid that originally entered from the center and impacts the first surface 3 of the inner wall of the housing 1. The flow-slowing columns on the first surface 3 disperse the fluid after collision with the first surface 3. The dispersed fluid continues to collide with and disperse from adjacent flow-slowing columns. This process decomposes the originally concentrated impact fluid into multiple smaller impact fluids, effectively slowing down and reducing the pressure on the inner wall of the housing 1, preventing weld cracking due to localized high-pressure impact.

[0019] Since the fluid flowing through the baffle 2 still has a high velocity, a gradient diversion is necessary. In a preferred embodiment, all the slow-flow columns include several first columns 4 and several second columns 5; the diameter of the first columns 4 is larger than the diameter of the second columns 5; all the second columns 5 are arranged in a matrix in the central region of the first surface 3; all the first columns 4 are arranged sequentially around the periphery of all the second columns 5. The fluid passing through the baffle 2 first contacts the first columns 4 located on the periphery. Because the diameter of the first columns 4 is larger, it has a stronger blocking effect, which can effectively reduce the kinetic energy of the fluid. The fluid originally located at the center of the inlet 11 can directly contact the second columns 5 in the central region of the first surface 3 for dispersion. Finally, all the fluid inside the shell 1 moves upward after being acted upon by the first columns 4 and the second columns 5 and flows into the downstream channel from the outlet 12.

[0020] To reduce the overall mass of the end cap, in a preferred embodiment, the first column 4 has an internal cavity, and an opening 41 communicating with the cavity is provided at the end of the first column 4 facing the liquid outlet 12. Making the first column 4 a hollow structure effectively reduces its mass. Furthermore, fluid can flow into the internal cavity of the first column 4 through the opening 41, and since the opening 41 faces the flow direction, when the impacting fluid contacts the first column 4, the fluid inside the first column 4 collides with the impacting fluid, thus still providing a buffering effect against the impacting fluid.

[0021] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application filed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

[0022] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An impact-resistant end cap, characterized in that, The device includes a housing and a baffle. The housing has an inlet and an outlet that communicate with the interior. The inlet is located on the side of the housing facing the core and is sealed and connected to the corresponding flow channel of the core. The outlet is located at the top of the housing and is sealed and connected to the rear channel. The baffle is located on the inner wall of the housing near the inlet and is continuously arranged along the edge of the inlet. The baffle extends toward the center of the inlet and is inclined toward the flow direction.

2. The impact-resistant end cap according to claim 1, characterized in that, The shell is a cuboid structure; the inlet has a square cross-section in the flow direction; the baffle is continuously segmented along the edge of the square; the side of the baffle facing the flow direction is a flow-blocking surface; the flow-blocking surface has a plurality of flow-slowing grooves; the flow-slowing grooves are opened along the flow-guiding direction of the flow-blocking surface; the plurality of flow-slowing grooves are arranged sequentially along the continuous setting direction of the baffle.

3. The impact-resistant end cap according to claim 1 or 2, characterized in that, The side of the inlet facing the inner wall of the housing in the flow direction is the first surface; the first surface is provided with a plurality of flow-slowing columns; one end of the flow-slowing column is connected to the first surface, the other end of the flow-slowing column extends toward the outlet, and the extension range of the flow-slowing column does not exceed the baffle. The axis of the slow-flow column is parallel to the inflow direction.

4. The impact-resistant end cap according to claim 3, characterized in that, All the slow-flow columns include a plurality of first columns and a plurality of second columns; the diameter of the first column is larger than the diameter of the second column; all the second columns are arranged in a matrix in the central region of the first surface; all the first columns are arranged sequentially around the periphery of all the second columns.

5. The impact-resistant end cap according to claim 4, characterized in that, The first column has a cavity inside, and the end of the first column facing the liquid outlet has an opening that communicates with the cavity.

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