High-pressure plate-fin heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and provides a high-pressure plate-fin heat exchanger which comprises a core body, cold channels and hot channels which are overlapped with each other are arranged in the core body, the cold channels at the two ends are connected with process layers, the process layers are arranged in a multi-layer mode, and first partition plates are arranged between the cold channels and the process layers. The first through holes are formed in the two ends of the first partition plate, and under the condition that the overall structure of the heat exchanger is not changed, the first through holes are formed in the first partition plate between the cold channel and the process layer, so that the purpose of setting the process layer is achieved, the first through holes can serve as a guarantee layer of the cold channel, and the heat exchange performance of the heat exchanger is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, and more particularly, to a high-pressure plate-fin heat exchanger. Background Art

[0002] A plate-fin heat exchanger generally consists of fins, partition plates, gaskets, flow guiding plates and end heads. Fins, flow guiding plates and gaskets are placed between two adjacent partition plates to form a sandwich layer, also known as a channel. The sandwich layers are stacked and brazed to form a core body, and the core body is equipped with end heads at both ends to form a plate heat exchanger.

[0003] Process layers are usually provided at both ends of the core body, which do not participate in heat exchange, but play a role in protection and support, and at the same time provide positions for welding the end heads. When the design pressure of the heat exchanger is relatively high, the thickness of the end heads is relatively large. Without affecting the performance of the heat exchanger, in order to meet the welding requirements of the thick end heads, it is usually necessary to increase the number of process layers, thereby increasing the weight and production cost, resulting in waste. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-pressure plate-fin heat exchanger to solve the above technical problems.

[0005] An embodiment of the utility model is realized by the following technical solutions: a high-pressure plate-fin heat exchanger, including a core body, in which cold channels and hot channels overlapping each other are provided. Process layers are connected to both ends of the cold channels, and the process layers are arranged in multiple layers. A first partition plate is provided between the cold channels and the process layers, and first through holes can be opened at both ends of the first partition plate.

[0006] Further, the number of process layers is N, where N is an integer greater than 1, and the first fins are arranged in the N-1 process layers adjacent to the cold channels and in the cold channels.

[0007] Further, second fins are arranged in the hot channels, and the fluid flow directions of the second fins and the first fins are different.

[0008] Further, second partition plates are provided between the process layers, and the number of second partition plates is N-1.

[0009] Further, when the number of process layers N = 2, the second partition plates are hermetically connected between the process layers; or when the number of process layers N>2, the outermost second partition plates are hermetically connected between the process layers, and second through holes for communicating adjacent process layers are opened at both the upper and lower ends of the N-2 second partition plates adjacent to the first partition plate.

[0010] Further, the first through holes are uniformly arranged on the upper and lower parts of the first partition plate.

[0011] The utility model has at least the following advantages and beneficial effects: without changing the overall structure of the heat exchanger, by opening a first through hole in the first partition between the cold channel and the process layer, it not only meets the purpose of setting the process layer, but also can act as a protection layer for the cold channel, ensuring the heat exchange performance of the heat exchanger. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of a high-pressure plate-fin heat exchanger provided by the present utility model;

[0014] Reference numerals: 1 - core body, 11 - cold channel, 12 - hot channel, 13 - process layer, 2 - first partition, 20 - first through hole, 3 - first fin, 4 - second fin, 5 - second partition, 50 - second through hole. Detailed Embodiments

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0017] Embodiment

[0018] As Figure 1As shown, in this embodiment, a high-pressure plate-fin heat exchanger is mainly disclosed. Under the design requirements of high temperature and high pressure, in order not to affect the performance of the heat exchanger and at the same time meet the placement and welding requirements of the thick head, multiple process layers 13 need to be provided at both ends of the core body 1. When the outermost cold channel 11 is blocked and fails, without changing the overall structure of the core body 1, the design margin is increased and the economy is improved. Its main structure includes a core body 1, in which overlapping cold channels 11 and hot channels 12 are provided. Process layers 13 are connected to the cold channels 11 at both the left and right ends of the core body 1. The process layer 13 is a cavity structure formed by a partition and a seal strip, which can play a role in protection and support, preventing the outer channels of the heat exchanger from being damaged by bumping during transportation or hoisting. A first partition 2 is provided between the cold channel 11 and the process layer 13. First through holes 20 can be opened at both ends of the first partition 2. In this way, the first through holes 20 connect the cold channel 11 and the process layer 13. The first through holes 20 are evenly arranged on the upper and lower parts of the first partition 2, which can promote the uniform distribution of fluid in the process layer 13 and avoid local blockage or uneven flow velocity.

[0019] Further, in specific implementation, in the above process layer 13 provided in the embodiment of the present utility model, the number of layers is N, where N is an integer greater than 1. The first fins 3 are arranged in the N - 1 process layers 13 adjacent to the cold channel 11 and in the cold channel 11, providing support for the process layer 13 to act as a protection layer for the cold channel 11. When the cold channel 11 connected to the process layer 13 fails, the N - 1 process layers 13 adjacent to the cold channel 11 can be regarded as the protection layer of the cold channel 11, leaving the outermost layer of the process layer 13 to play a role in protection and support. In this way, it not only meets the purpose of protection and support of the process layer 13, but also can realize the placement and welding of the head, and can also be used as the cold channel 11 when the cold channels 11 at both ends are blocked and fail, avoiding increasing production costs and ensuring the heat exchange performance of the heat exchanger.

[0020] Further, in specific implementation, in the above hot channel 12 provided in the embodiment of the present utility model, second fins 4 are arranged, and the fluid flow directions of the second fins 4 and the first fins 3 are different.

[0021] Further, in specific implementation, in the above process layer 13 provided in the embodiment of the present utility model, a second partition 5 is provided between the process layers 13, and the number of layers of the second partition 5 is N - 1. When the number of layers of the process layer 13 is two, that is, N = 2, the second partition 5 is hermetically connected between the process layers 13. When the number of layers of the process layer 13 is greater than two, that is, N > 2, the outermost second partition 5 is still hermetically connected between the process layers 13. Second through holes 50 for connecting adjacent process layers 13 are opened at both the upper and lower ends of the N - 2 second partitions 5 adjacent to the first partition 2, so that the N - 1 process layers 13 adjacent to the cold channel 11 at both ends of the core body 1 can all be used as the protection layer of the cold channel 11.

[0022] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-pressure plate-fin heat exchanger, comprising a core (1), wherein the core (1) is provided with a cold channel (11) and a hot channel (12) overlapping each other, wherein the cold channels (11) at both ends are connected with a process layer (13), wherein the process layer (13) is a multi-layer arrangement, and wherein: A first partition plate (2) is provided between the cold channel (11) and the process layer (13), and first through holes (20) are provided at both ends of the first partition plate (2).

2. A high pressure plate-fin heat exchanger according to claim 1, characterized in that: The number of the process layers (13) is N, wherein N is an integer greater than 1, and the N-1 process layers (13) adjacent to the cold channel (11) and the cold channel are both provided with first fins (3).

3. A high pressure plate-fin heat exchanger according to claim 2, characterized in that: A second fin (4) is arranged in the heat channel (12), and the fluid flow directions of the second fin (4) and the first fin (3) are different.

4. A high pressure plate-fin heat exchanger according to claim 2, characterized in that: A second partition (5) is provided between the process layers (13), and the number of layers of the second partition (5) is N-1.

5. A high pressure plate-fin heat exchanger according to claim 4, characterized in that: When the number of the process layers (13) is N=2, the second partition plate (5) is sealed and connected between the process layers (13); Alternatively, when the number of process layers (13) is N>2, the outermost second partition plate (5) is sealed and connected between the process layers (13), and the second partition plate (5) of the N-2 layer adjacent to the first partition plate (2) is provided with second through holes (50) at both upper and lower ends thereof, which are connected to adjacent process layers (13).

6. A high pressure plate-fin heat exchanger according to claim 1, characterized in that: The first through holes (20) are evenly arranged at the upper part and the lower part of the first partition plate (2).

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