Heat exchanger

Abstract

The utility model discloses a heat exchanger, include: casing, be equipped with first medium inlet, first medium outlet, second medium inlet and second medium outlet on it, first medium pipeline, set up in the casing, first medium pipeline includes the main pipe, pivot, branch pipe and the rib pipe that communicate in proper order, one end of main pipe communicates first medium inlet, the other end communicates pivot, one end of branch pipe communicates pivot, and the other end connects rib pipe, one end of rib pipe communicates first medium outlet, and the other end is closed and fixed on pivot side wall, is used for fixed pivot, wherein, when first medium flows through main pipe, pivot, branch pipe and rib pipe in proper order, can exchange heat with the second medium in the inside of casing. The utility model discloses through setting up pivot and branch pipe in the inside of casing to reduce the flow resistance of medium, set up the rib pipe of fixed connection with casing and pivot simultaneously to enhance the stability of equipment.

Description

Technical Field

[0001] This utility model relates to heat exchange equipment, and more particularly to a novel heat exchanger. Background Technology

[0002] Heat exchangers, as a general-purpose device for transferring heat between different media, are widely used in petrochemical, energy and power, HVAC, and many industrial production processes. Their core function is to release heat energy from a higher-temperature medium to a lower-temperature medium through a highly efficient heat transfer surface, thereby meeting the requirements of heating, cooling, or heat recovery of materials in the process flow.

[0003] Shell-and-tube heat exchangers, as a common type, are typically designed to achieve a large heat transfer area and high heat transfer efficiency within a limited space, while also having certain requirements for the flow resistance of the medium and the long-term stability of the equipment operation.

[0004] Therefore, it is necessary to reduce the flow resistance of the medium while enhancing the long-term stability of the equipment operation. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this utility model reduces the flow resistance of the medium by setting a hub and branch pipe inside the shell; at the same time, it enhances the stability of the equipment by setting a rib pipe fixedly connected to the shell and hub.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The heat exchanger provided by this utility model includes: The housing has a first medium inlet, a first medium outlet, a second medium inlet, and a second medium outlet. A first medium conduit is disposed within the housing; the first medium conduit includes a main pipe, a hub, a branch pipe, and a rib pipe connected in sequence; one end of the main pipe is connected to the first medium inlet, and the other end is connected to the hub; one end of the branch pipe is connected to the hub, and the other end is connected to the rib pipe; one end of the rib pipe is connected to the first medium outlet, and the other end is closed and fixed to the side wall of the hub for fixing the hub. in, When the first medium flows through the main pipe, hub, branch pipe and rib pipe in sequence, it can exchange heat with the second medium inside the shell.

[0007] Furthermore, it includes multiple outlets for the first medium; Correspondingly, it includes multiple branch pipes and multiple rib pipes; in, Each branch pipe is connected to the hub at one end and to one of the ribs at the other end; each rib is connected to one of the first medium outlets; Furthermore, the plurality of first medium outlets are uniformly distributed along the circumference of the housing; Accordingly, the plurality of branch pipes and the plurality of ribs are evenly distributed circumferentially within the housing.

[0008] Furthermore, it includes four outlets for the first medium; Accordingly, it includes four branch pipes and four rib pipes; in, Each branch pipe is connected to the hub at one end and to one of the ribs at the other end; each rib is connected to one of the first medium outlets; Furthermore, heat dissipation fins are installed on the branch pipe.

[0009] Furthermore, the length of the branch pipe on which the heat dissipation fins are installed is not less than 80% of the total length of the branch pipe.

[0010] Furthermore, it further includes a joint control system, which includes: A temperature sensor is mounted on the inner wall of the housing near the second medium outlet; At least one throttle valve is installed at one end of the branch pipe near the hub to control the connectivity of the branch pipe in which it is located; A controller, which is electrically connected to the temperature sensor and the throttle valve; The joint control system is configured as follows: The opening degree of the throttle valve is controlled based on the outlet temperature of the second medium to regulate the flow distribution of the first medium.

[0011] Furthermore, each of the branch pipes is equipped with a throttle valve electrically connected to the controller at one end near the hub.

[0012] This utility model has at least the following advantages or beneficial effects: This invention employs a hub structure, which distributes the primary medium; it also utilizes branch pipes and finned tubes, which increase the heat exchange area and create a stable flow path; and importantly, it incorporates a structure that fixes one end of the finned tube to the side wall of the hub, providing additional support and stability. Overall, this invention optimizes the medium flow distribution, improves heat exchange efficiency, and enhances structural stability.

[0013] This invention employs a structure in which heat dissipation fins are installed on the branch pipe. The heat dissipation fin structure expands the outer surface area of ​​the branch pipe and enhances external heat exchange. Overall, this invention can further improve the overall heat transfer efficiency of the heat exchanger.

[0014] This invention employs a control system structure including a temperature sensor, which monitors the outlet temperature of the second medium. It also incorporates a throttling valve structure installed on the branch pipe, which adjusts the flow cross-section of the branch. A controller is used to adjust the opening of the throttling valve based on the temperature signal. Overall, this invention dynamically adjusts the flow rate of each branch of the first medium based on feedback from the outlet temperature of the second medium, thereby stabilizing the outlet temperature and improving operational performance. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the internal structure of the heat exchanger disclosed in this utility model; Figure 2 for Figure 1 Sectional view of AA.

[0017] Figure label: 1-Housing; 11-First medium inlet; 12-First medium outlet; 13-Second medium inlet; 14-Second medium outlet; 2-First medium pipeline; 21-Main pipe; 22-Hole; 23-Branch pipe; 24-Rib pipe; 3-Control system; 31-Temperature sensor; 32-Throttle valve Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.

[0022] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0023] The embodiments of this utility model will be described in detail below.

[0024] This utility model discloses a novel heat exchanger.

[0025] This invention, through the provision of a first medium pipeline 2 structure comprising a main pipe 21, a hub 22, branch pipes 23, and ribbed pipes 24, allows the first medium to flow sequentially through the aforementioned components and exchange heat with the second medium within the shell 1. The design of the hub 22 facilitates the distribution of the incoming medium, while the combination of branch pipes 23 and ribbed pipes 24 increases the flow path and heat exchange area of ​​the medium. In particular, the structure of one end of the ribbed pipe 24 being fixed to the side wall of the hub 22 provides a flow channel for the medium and also provides auxiliary support to the hub 22 components, contributing to improved overall structural stability. Details are as follows: Figure 1 This is a schematic diagram of the internal structure of the heat exchanger disclosed in this utility model. Figure 2 for Figure 1 Sectional view of AA.

[0026] This heat exchanger mainly includes a shell 1 and a first medium pipe 2 disposed inside the shell 1. The shell 1 is provided with a first medium inlet 11, a first medium outlet 12, a second medium inlet 13, and a second medium outlet 14. The first medium inlet 11 is used to introduce the first medium, and the first medium outlet 12 is used to discharge the first medium. The second medium inlet 13 is used to introduce the second medium, and the second medium outlet 14 is used to discharge the second medium. The shell 1 is made of rolled and welded steel plate, and its material can be carbon steel, stainless steel, or alloy steel. In this embodiment, the shell 1 is made of 304 stainless steel with a wall thickness of 5mm. In other embodiments, the wall thickness of the shell 1 can be adjusted within the range of 3-8mm, and its shape is usually cylindrical with a diameter range of 500-2000mm. In other embodiments, the shell 1 can also be square or other regular geometric shapes.

[0027] The first medium pipeline 2 is disposed inside the shell 1, and its function is to form a flow channel for the first medium and to exchange heat with the second medium. The first medium pipeline 2 includes a main pipe 21, a hub 22, a branch pipe 23, and a ribbed pipe 24 connected in sequence.

[0028] One end of the main pipe 21 is connected to the first medium inlet 11, and the other end is connected to the hub 22. The function of the main pipe 21 is to transport the medium entering from the first medium inlet 11 to the hub 22, and its pipe diameter ranges from 100 to 300 mm.

[0029] Branch pipe 23 is connected to hub 22 at one end and rib pipe 24 at the other end; the function of branch pipe 23 is to transport the medium distributed from hub 22 to rib pipe 24, during which the first medium and the second medium exchange heat. The diameter of branch pipe 23 is 50-150mm.

[0030] A heat dissipation fin is installed on the branch pipe 23. The function of the heat dissipation fin is to expand the outer surface area of ​​the branch pipe 23 and enhance the heat exchange effect. The material of the heat dissipation fin can be aluminum alloy, copper, or thermally conductive composite material; in this embodiment, aluminum alloy fins are used, with a thickness of 0.5 mm and a height of 20 mm. The length of the branch pipe 23 with the heat dissipation fin is not less than 80% of the total length of the branch pipe 23. In this embodiment, the heat dissipation fin covers 90% of the total length of the branch pipe 23. In other embodiments, this coverage rate can be adjusted between 80% and 100%. The heat dissipation fin can be fixed to the branch pipe 23 by welding, extrusion molding, or mechanical clamping.

[0031] One end of the rib tube 24 is connected to the first medium outlet 12, and the other end is closed and fixed to the side wall of the hub 22. The function of the rib tube 24 is to increase the heat exchange area and provide a flow channel, while its structure of being fixed to the side wall of the hub 22 can provide support and fixation for the hub 22.

[0032] In this embodiment, the rib tube 24 and the hub 22 are fixed by welding; in other embodiments, flange connection or other mechanical connection methods may also be used.

[0033] The heat exchanger may further include a control system 3, which includes a temperature sensor 31, a throttle valve 32, and a controller.

[0034] Temperature sensor 31 is mounted on the inner wall of housing 1 near the second medium outlet 14, and its function is to monitor the outlet temperature of the second medium. Temperature sensor 31 is a PT100 platinum resistance temperature sensor.

[0035] Throttling valve 32 is installed at one end of branch pipe 23 near hub 22 to control the connection status of branch pipe 23. Throttling valve 32 is an electrically adjustable valve with a diameter range of 25-100mm.

[0036] The controller (not shown in the figure) is electrically connected to the temperature sensor 31 and the throttle valve 32. The controller is a PLC controller.

[0037] The control system 3 is configured to control the opening of the throttle valve 32 based on the outlet temperature of the second medium to regulate the flow distribution of the first medium.

[0038] In this embodiment, a throttle valve 32 electrically connected to the controller is installed at the end of each branch pipe 23 near the hub 22, which enables independent flow control of each branch. In other embodiments, throttle valves 32 electrically connected to the controller can be installed only on some of the branch pipes 23, which also enables independent flow control of the corresponding branch.

[0039] In one specific embodiment, the heat exchanger includes four first medium outlets 12; correspondingly, it includes four branch pipes 23 and four finned pipes 24. Each branch pipe 23 is connected at one end to a hub 22 and at the other end to a finned pipe 24; each finned pipe 24 is connected to one first medium outlet 12. The first medium outlets 12 are uniformly distributed circumferentially along the shell 1; correspondingly, the branch pipes 23 and finned pipes 24 are uniformly distributed circumferentially within the shell 1. This arrangement helps to promote a uniform temperature field distribution within the shell and avoids local overheating or undercooling. In other embodiments, the number of first medium outlets 12 may be three, five, or other numbers, the specific number of which can be determined according to the heat exchanger capacity requirements.

[0040] Therefore, when the first medium flows sequentially through the main pipe 21, hub 22, branch pipe 23, and rib pipe 24, it can exchange heat with the second medium inside the shell 1. Due to the distribution structure of the hub 22 and the design of multiple branch pipes 23, the medium flow distribution is more uniform, reducing flow resistance. In this embodiment, the first medium is high-temperature steam with a temperature range of 150-300℃, and the second medium is cooling water; in other embodiments, the temperature relationship of the media can be adjusted according to the actual application scenario, and the first medium can also be hot oil or other high-temperature fluids, and the second medium can also be air or other cooling media.

[0041] Overall, this invention employs a first medium pipeline 2 structure comprising a main pipe 21, a hub 22, branch pipes 23, and ribbed pipes 24. The hub 22 structure distributes the first medium; the branch pipes 23 and ribbed pipes 24 increase the heat exchange area and form a stable flow path. The ribbed pipes 24, fixed to the side wall of the hub 22, provide additional support to the hub 22. Multiple first medium outlets 12 and corresponding branch pipes 23 and ribbed pipes 24 structures are also employed, forming multiple parallel flow paths. Furthermore, a heat dissipation fin structure expands the heat exchange area. In addition, a control system 3 structure including a temperature sensor 31, a throttling valve 32, and a controller is used, which can adjust the flow rate of each branch of the first medium based on feedback from the second medium outlet temperature. The combination of these structures optimizes the medium flow distribution, improves heat exchange efficiency, enhances structural stability, and improves temperature control accuracy, thus having a positive effect on improving the overall performance of the heat exchanger.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A heat exchanger, characterized in that, include: The housing (1) is provided with a first medium inlet (11), a first medium outlet (12), a second medium inlet (13) and a second medium outlet (14). A first medium conduit (2) is disposed within the housing (1); the first medium conduit (2) includes a main pipe (21), a hub (22), a branch pipe (23), and a rib pipe (24) connected in sequence; one end of the main pipe (21) is connected to the first medium inlet (11), and the other end is connected to the hub (22); one end of the branch pipe (23) is connected to the hub (22), and the other end is connected to the rib pipe (24); one end of the rib pipe (24) is connected to the first medium outlet (12), and the other end is closed and fixed to the side wall of the hub (22) for fixing the hub (22). in, When the first medium flows through the main pipe (21), hub (22), branch pipe (23) and rib pipe (24) in sequence, it can exchange heat with the second medium inside the shell (1).

2. The heat exchanger according to claim 1, characterized in that, The heat exchanger includes multiple outlets (12) for the first medium. Accordingly, it includes multiple branch pipes (23) and multiple rib pipes (24); in, Each branch pipe (23) is connected to the hub (22) at one end and to a rib pipe (24) at the other end; each rib pipe (24) is connected to a first medium outlet (12).

3. The heat exchanger according to claim 2, characterized in that: Multiple first medium outlets (12) are evenly distributed circumferentially along the housing (1); Accordingly, the multiple branch pipes (23) and the multiple ribs (24) are evenly distributed circumferentially within the housing (1).

4. The heat exchanger according to claim 2, characterized in that, The heat exchanger includes four outlets for the first medium (12); Accordingly, it includes four of the branch tubes (23) and four of the rib tubes (24); in, Each branch pipe (23) is connected to the hub (22) at one end and to a rib pipe (24) at the other end; each rib pipe (24) is connected to a first medium outlet (12).

5. The heat exchanger according to claim 1, characterized in that, The branch pipe (23) is equipped with heat dissipation fins.

6. The heat exchanger according to claim 5, characterized in that, The length of the branch pipe (23) on which the heat dissipation fins are installed is not less than 80% of the total length of the branch pipe (23).

7. The heat exchanger according to claim 1, characterized in that, Further including a joint control system (3), which includes: Temperature sensor (31) is mounted on the inner wall of the housing (1) near the second medium outlet (14); At least one throttle valve (32) is installed at one end of the branch pipe (23) near the hub (22) for controlling the connection state of the branch pipe (23); The controller is electrically connected to the temperature sensor (31) and the throttle valve (32); The joint control system (3) is configured as follows: Based on the outlet temperature of the second medium, the opening degree of the throttle valve (32) is controlled to adjust the flow distribution of the first medium.

8. The heat exchanger according to claim 7, characterized in that, Each of the branch pipes (23) is equipped with a throttle valve (32) that is electrically connected to the controller at one end near the hub (22).

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