A fixing structure of a double-pipe heat exchanger

Abstract

The utility model discloses a fixed structure of double pipe heat exchanger belongs to heat exchanger technical field, including sleeve body, fastening portion, sleeve body presents spiral shape setting, and fastening portion can fix sleeve body, and fastening portion includes fixed portion, fastener, and the one end of fixed portion is connected with fastener, and the other end of fixed portion is provided with the screw hole, and can fix fastening portion through the screw hole, fastener can be around setting in the surface of sleeve body, and fastener includes annular portion, buckle, and the one end of buckle is set up in annular portion, and the other end of annular portion is provided with the hook portion, and buckle is connected with hook portion. Through the utility model, fastening portion adopts fixed portion, fastener, and fastening portion is connected with sleeve body through fastener, and is fixed through fixed portion, and fastener will not be directly welded on sleeve body, and the risk of damaging sleeve body in the welding process is less, and the structural integrity of sleeve body and the stability of long -term use are ensured.

Description

Technical Field

[0001] This utility model relates to a fixing structure for a shell-and-tube heat exchanger, belonging to the field of heat exchanger technology. Background Technology

[0002] A shell-and-tube heat exchanger is a widely used device in heat exchange processes, primarily for heat transfer between liquids and gases.

[0003] In existing technologies, the fixing structure of shell-and-tube heat exchangers typically employs welding to directly weld the fasteners to the shell body, followed by bolts or other fixing methods. While welding, as a traditional fixing method, can achieve a relatively stable connection, the high temperatures involved in the welding process can easily create a heat-affected zone on the shell body, potentially leading to deformation, damage, or degradation of the shell body's material properties. Furthermore, the installation of the fasteners is usually quite complex, requiring reliance on welding or other mechanical connection methods.

[0004] During welding, the main body of the casing is prone to developing a heat-affected zone due to heat treatment, leading to a decline in the structural performance of the casing and even cracks or deformation, affecting the long-term stability of the heat exchanger. Secondly, while welding provides a robust connection between the casing and the fasteners, it also means greater costs and more complex procedures during equipment maintenance or disassembly. Therefore, after prolonged use, the casing becomes difficult to inspect, replace, or adjust, increasing the difficulty of equipment maintenance and operational risks. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a fixing structure for a shell-and-tube heat exchanger, which solves the problems of easy damage to the shell-and-tube body when the fastener is welded to the shell-and-tube body and difficulty in maintenance after fixing.

[0006] The technical problem to be solved by this utility model is achieved by the following technical solution: a fixing structure for a shell-and-tube heat exchanger, comprising... The casing body and fastening parts are as follows: The sleeve body is spirally shaped, and the fastening part can fix the sleeve body. The fastening part includes a fixing part and a fastener. One end of the fixing part is connected to the fastener, and the other end of the fixing part is provided with a screw hole, through which the fastening part can be fixed. The fastener is capable of being disposed around the surface of the sleeve body. The fastener includes an annular portion and a buckle. The buckle is disposed at one end of the annular portion, and a hook is disposed at the other end of the annular portion. The buckle is connected to the hook.

[0007] Preferably, at least one of the fastening parts is provided on the sleeve body.

[0008] Preferably, the fastening part is provided in three or four parts.

[0009] Preferably, the fixing part is welded to the annular part.

[0010] Preferably, the fixing part is detachably fixed to the annular part.

[0011] Preferably, the fastener is made of metal.

[0012] Preferably, the sleeve body and the fastening part are separately powder-coated.

[0013] The beneficial effects of this utility model are: (1) In this utility model, the fastening part adopts a fixing part and a fastener. The fastening part is connected to the sleeve body through the fastener and fixed by the fixing part. The fastener will not be directly welded to the sleeve body, which reduces the risk of damaging the sleeve body during the welding process and ensures the structural integrity and long-term stability of the sleeve body.

[0014] (2) With this utility model, the annular part is connected by a snap fastener. When the main body of the sleeve needs to be disassembled, replaced or maintained, only the bolts need to be loosened or the snap fastener needs to be removed, without welding the main body of the sleeve. This structure greatly reduces the complexity and cost of maintenance.

[0015] (3) Through this utility model, multiple fastening parts are provided on the main body of the casing, and the support of the main body of the casing is more uniform, thereby avoiding local stress concentration and reducing the risk of deformation or damage caused by pressure fluctuations, vibration or temperature changes. This ensures the high efficiency and reliability of the casing heat exchanger during long-term use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a diagram showing the buckle of this utility model in an unengaged state.

[0018] In the diagram: 1-Sleeve body, 2-Fastening part, 21-Fixing part, 211-Screw hole, 22-Fastener, 221-Bent section, 222-Connecting section, 223-Snap fastener. Detailed Implementation

[0019] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] Example 1 like Figures 1-2As shown, a fixing structure for a shell-and-tube heat exchanger includes a shell body 1 and a fastening part 2. The shell body 1 is spirally arranged and serves as the core part of the heat exchanger. The fastening part 2 is used to support and fix the shell body 1, ensuring the stability and safety of the shell body 1 during use.

[0021] Reference Figure 1 , Figure 2 In this embodiment, the fastening part 2 includes a fixing part 21 and a fastener 22. The top of the fixing part 21 is connected to the fastener 22. The bottom of the fixing part 21 is bent, and a screw hole 211 is provided at the bend. The screw hole 211 can connect and fix the fastening part 2 to other components, and the fastening part 2 is placed in a suitable position to enhance stability.

[0022] The fastener 22 includes an annular portion and a snap fastener 223. In this embodiment, the annular portion consists of two bent sections 221 and a connecting section 222. Bent sections 221 are provided on both sides of the connecting section 22. A snap fastener 223 is provided on the outer side of one of the bent sections 221, connecting the two bent sections 221. In this embodiment, the two bent sections 221 can contact the top and bottom of the sleeve body 1, fixing it in place. The connecting section 222 connects the two bent sections 221, forming a surrounding structure, ensuring that the fastening part 2 can be arranged around the surface of the sleeve body 1. The fastener 22 is generally strip-shaped.

[0023] When the two bent sections 221 are not connected by the buckle 221, the bent sections 221 can move within a certain range without affecting the use of the bent sections 221.

[0024] In this embodiment, the bottom of the bent section 221 without the buckle 223 is provided with a hook, and the buckle 223 can fix the two bent sections 221 through the hook at the bottom of the bent section 221. When the sleeve body 1 needs to be disconnected after being installed in the fastening part 2, or when the sleeve body 1 needs to be fixed by the fastening part 2, the buckle 223 can be released. At this time, the sleeve body 1 can enter or leave the fastener 22 through the gap between the two bent sections 221.

[0025] In this embodiment, the top of the fixing part 21 is connected and fixed to the bottom of the fastener 22 by welding.

[0026] In another embodiment, the top of the fixing part 21 is connected to the fastener 22 by a snap-fit. When it is necessary to adjust the fastener or the sleeve body 1, the snap-fit ​​can be removed for quick disassembly and assembly. The sleeve body 1 can be removed from the fastener 21 without adjusting the bolts on the fixing part 21, reducing the amount of operation.

[0027] The fastening part 2 fixes the spiral sleeve body 1, ensuring that the sleeve body 1 maintains a stable shape during operation and preventing the sleeve from moving or deforming due to external factors such as vibration and pressure changes; it also plays a supporting role, ensuring that the sleeve is not tilted or loosened by external forces during long-term use.

[0028] In the fastening part 2, the connecting section 222 has bent sections 221 at both ends to ensure that it will not loosen or fall off when subjected to external stress; the two bent sections 221 are connected by the buckle 223 to ensure that the fastening part 2 bracket can stably wrap around the sleeve body. The fastening part 2 can be firmly connected to the external support structure by the bottom bolt of the fixing part 21.

[0029] The casing body 1 is provided with at least one fastening part 2 for fixation; in this embodiment, three fastening parts 2 are provided. By providing multiple fastening parts 2, the uniform distribution and stability of the casing body 1 are ensured, improving its durability and reliability. This effectively reduces the risk of casing displacement and deformation, and increases the service life of the heat exchanger.

[0030] In this embodiment, the fastener 22 is made of metal.

[0031] In this embodiment, the sleeve body 1 and the fastening part 2 are powder coated separately. In the traditional process, the sleeve body 1 is first pressed and spot welded for fixation, and then powder coated. The part where the sleeve body 1 and the fastening part 2 come into contact cannot be powder coated, resulting in poor rust prevention at the contact part. In this embodiment, the sleeve body 1 and the fastening part 2 are powder coated separately, which ensures that all outer surfaces of each device are powder coated, thus ensuring rust prevention.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a shell-and-tube heat exchanger, comprising: The casing body and fastening parts are as follows: The sleeve body is spirally shaped, and the fastening part can fix the sleeve body. Its features are: The fastening part includes a fixing part and a fastener. One end of the fixing part is connected to the fastener, and the other end of the fixing part is provided with a screw hole. The fastening part can be fixed through the screw hole; The fastener is capable of being disposed around the surface of the sleeve body. The fastener includes an annular portion and a buckle. The buckle is disposed at one end of the annular portion, and a hook is disposed at the other end of the annular portion. The buckle is connected to the hook.

2. The fixing structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: At least one fastening part is provided on the main body of the sleeve.

3. The fixing structure of a shell-and-tube heat exchanger according to claim 2, characterized in that: The fastening parts are provided in three or four parts.

4. The fixing structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The fixing part is welded to the annular part.

5. The fixing structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The fixing part is detachably fixed to the annular part.

6. The fixing structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The fastener is made of metal.

7. The fixing structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The sleeve body and the fastening part are separated and powder-sprayed.

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