Leak-proof and anti-vibration single-flow wound tube type heat exchanger

Abstract

The utility model discloses a leakproof anti-vibration single-flow wound tube type heat exchanger which comprises an outer shell and a shell end socket, a winding tube is arranged in the outer shell, the winding tube is of a multi-layer structure, an anti-vibration assembly is arranged on a leading-out section of the winding tube, a double-tube-plate assembly is arranged between the outer shell and the shell end socket, and the double-tube-plate assembly is connected with the winding tube. The anti-vibration assembly is arranged, the multiple layers of winding pipes are separated and fixed in a layered mode through the annular metal belt and the annular saddle-shaped pipe support, the multiple layers of winding pipes are separated and fixed in a layered mode through the annular saddle-shaped pipe support, the multiple layers of winding pipes are separated and fixed in a layered mode through the annular saddle-shaped pipe support, and the multiple layers of winding pipes are separated and fixed in a layered mode through the double-pipe-plate assembly. The problem that the winding pipe is damaged under the working condition of strenuous vibration is effectively prevented, and the anti-vibration performance of the heat exchanger is improved; the outer shell and the shell sealing head are separated through the two tube plates, the leakage problem between the outer shell and the shell sealing head is avoided, then tube pass media and shell pass media are prevented from being mixed in a crossed mode, and the safety and reliability of the heat exchanger are remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a single - strand flow wound - tube heat exchanger with leak prevention and vibration resistance. Background Technique

[0002] The wound - tube heat exchanger is a heat - exchange device widely used in industrial production. The application prospect of the wound - tube heat exchanger is very broad. First of all, with the country's high attention to environmental protection and energy conservation, as an efficient and energy - saving heat - exchange device, the wound - tube heat exchanger is increasingly recognized and favored by the market. Especially in industrial fields such as petroleum, chemical industry, and metallurgy, its application has become one of the main means to promote the adjustment of the energy structure and the green transformation and upgrading. Secondly, the wound - tube heat exchanger can be applied to heat exchange between various media, such as steam - water, water - oil, air - water, air - gas, etc., and has a wide application prospect in different industrial fields. In addition, the wound - tube heat exchanger has a long service life, a simple structure, convenient maintenance, and a lower use cost than other heat - exchange devices, so it also has more advantages in the market.

[0003] The working principle of the wound - tube heat exchanger is mainly based on the heat transfer between the fluid inside the pipe and the fluid outside the pipe. Specifically, it directly exchanges heat between the internal fluid and the external fluid through a spiral tube with a smaller inner diameter of the pipe and a fixed tube with a larger outer diameter of the pipe. The internal fluid is generally liquid or gas, and the external fluid is cooling water or steam. When the internal fluid flows in the spiral tube, the heat it carries will be conducted through the pipe wall to the outer surface of the fixed tube, and then dissipated through the absorption of the external fluid, thus realizing heat exchange.

[0004] The lead - out end of the winding tube in the single - strand flow wound - tube heat exchanger will vibrate due to the working condition environment of the single - strand flow wound - tube heat exchanger, which may cause problems of damage to the single - strand flow wound - tube heat exchanger. And at present, the tube - sheet structure in the single - strand flow wound - tube heat exchanger is a single - layer structure, which will cause problems of leakage and mixing of the tube - side medium and the shell - side medium, resulting in cross - contamination of different media. Therefore, we propose a single - strand flow wound - tube heat exchanger with leak prevention and vibration resistance. Content of the Utility Model

[0005] The purpose of the utility model is to provide a single - strand flow wound - tube heat exchanger with leak prevention and vibration resistance to solve the problems raised in the above - mentioned background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A single - strand flow wound - tube heat exchanger with leak prevention and vibration resistance, including an outer shell and a shell head, and a winding tube is arranged inside the outer shell;

[0007] The winding tube is of a multi - layer structure, and an anti - vibration component is arranged at the lead - out section of the winding tube, and the anti - vibration component is used to separate and fix the winding tube in layers;

[0008] A double-tube sheet assembly is provided between the outer casing and the casing head. The inlet end and the outlet end of the wound tube are symmetrically arranged on the double-tube sheet assembly. A partition plate is arranged in the casing head, and the partition plate is used to separate the inlet end and the outlet end of the corresponding wound tube in the casing head to form a tube-side medium inlet cavity and a tube-side medium outlet cavity.

[0009] Preferably, a central cylinder is arranged in the outer casing, and multiple layers of the wound tubes are alternately wound on the central cylinder in a U-shaped structure.

[0010] Preferably, a gasket strip is arranged between the innermost layer of the wound tube and the central cylinder.

[0011] Preferably, the anti-vibration assembly includes an annular metal strip and an annular saddle-shaped pipe support;

[0012] A plurality of the annular saddle-shaped pipe supports are provided, and multiple layers of the wound tubes are separated and fixed by the plurality of annular saddle-shaped pipe supports. The annular metal strip is arranged outside the outermost layer of the wound tube.

[0013] Preferably, the annular saddle-shaped pipe support is provided with saddle-shaped grooves distributed at equal intervals, and the wound tube is fixed at equal intervals through the saddle-shaped grooves on the annular saddle-shaped pipe support.

[0014] Preferably, the double-tube sheet assembly includes two tube sheets, and the two tube sheets are arranged in parallel between the outer casing and the casing head.

[0015] Preferably, a tube-side medium inlet end and a tube-side medium outlet end are respectively arranged on the outer side of the casing head corresponding to the tube-side medium inlet cavity and the tube-side medium outlet cavity.

[0016] Preferably, a shell-side medium inlet end is arranged at the upper part of the outer casing, and a shell-side medium outlet end is arranged at the bottom of the outer casing.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model is provided with an anti-vibration assembly. The multi-layer wound tubes are separated and fixed by the annular metal strip and the annular saddle-shaped pipe support, effectively preventing the problem of damage to the wound tubes caused by severe vibration conditions, reducing the risk of damage to the heat exchanger equipment caused by vibration of the lead-out section of the wound tubes, and improving the anti-vibration performance of the heat exchanger;

[0019] 2. The utility model is provided with a double tube sheet assembly. The outer shell and the shell head are separated by two tube sheets, avoiding leakage problems between the outer shell and the shell head, thereby preventing the cross - mixing of the tube - side medium and the shell - side medium, and significantly improving the safety and reliability of the heat exchanger;

[0020] 3. The utility model is provided with a partition baffle. On the basis of the double tube sheet assembly, the inlet end and the outlet end of the corresponding wound tube in the shell head are separated by the partition baffle to form a tube - side medium inlet cavity and a tube - side medium outlet cavity. By separating different fluid channels, direct contact between different media is avoided, reducing the risk of cross - contamination;

[0021] 4. In the utility model, the multi - layer wound tubes are alternately wound on the central cylinder in a U - shaped structure, enabling the wound tubes to be disassembled layer by layer, realizing the unilateral disassembly of the wound tubes, meeting the working conditions where it is difficult to fully disassemble the equipment, and being able to comprehensively disassemble and clean the wound tube part of the wound - tube heat exchanger, reducing the maintenance and cleaning difficulty of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall sectional structure schematic diagram of the utility model;

[0023] Figure 2 is the sectional structure schematic diagram of the shell head of the utility model;

[0024] Figure 3 is the sectional structure schematic diagram of the anti - vibration assembly of the utility model;

[0025] Figure 4 is the sectional structure schematic diagram of the wound tube and the central cylinder of the utility model;

[0026] Figure 5 is the distribution schematic diagram of the wound tubes of the utility model.

[0027] In the figure: 1. Outer shell; 2. Shell head; 3. Wound tube; 4. Anti - vibration assembly; 401. Ring - shaped metal strip; 402. Ring - shaped saddle - shaped tube support; 403. Saddle - shaped groove; 5. Double tube sheet assembly; 501. Tube sheet; 6. Partition baffle; 7. Central cylinder; 8. Gasket strip; 9. Tube - side medium inlet end; 10. Tube - side medium outlet end; 11. Shell - side medium inlet end; 12. Shell - side medium outlet end. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1 - 5 , the single-strand flow wound tube heat exchanger with anti-leakage and anti-vibration provided by the present utility model includes an outer shell 1 and a shell head 2. A wound tube 3 is arranged inside the outer shell 1. The wound tube 3 is of a multi-layer structure. A central cylinder 7 is arranged inside the outer shell 1. The multi-layer wound tubes 3 are alternately wound on the central cylinder 7 in a U-shaped structure. A gasket 8 is arranged between the innermost wound tube 3 and the central cylinder 7;

[0030] In the present utility model, the multi-layer wound tubes 3 are alternately wound on the central cylinder 7 in a U-shaped structure, which can disassemble the wound tubes 3 layer by layer, realize the unilateral disassembly of the wound tubes 3, meet the working conditions where it is difficult to completely remove the equipment, and can comprehensively disassemble and clean the wound tube part of the wound tube heat exchanger, reducing the maintenance and cleaning difficulty of the heat exchanger;

[0031] An anti-vibration assembly 4 is arranged at the lead-out section of the wound tube 3. The anti-vibration assembly 4 is used to separate and fix the multi-layer wound tubes 3 layer by layer. The anti-vibration assembly 4 includes an annular metal belt 401 and an annular saddle-shaped tube support 402; a plurality of annular saddle-shaped tube supports 402 are arranged. The multi-layer wound tubes 3 are separated and fixed by a plurality of annular saddle-shaped tube supports 402. The annular metal belt 401 is arranged outside the outermost wound tube 3. Equally spaced saddle-shaped grooves 403 are arranged on the annular saddle-shaped tube support 402. The wound tubes 3 are equally spaced and fixed through the saddle-shaped grooves 403 on the annular saddle-shaped tube support 402;

[0032] The present utility model is provided with an anti-vibration assembly 4, which separates and fixes the multi-layer wound tubes 3 layer by layer through the annular metal belt 401 and the annular saddle-shaped tube support 402, effectively preventing the problem of damage to the wound tubes caused by severe vibration conditions, reducing the risk of damage to the heat exchanger equipment caused by vibration at the lead-out section of the wound tubes, and improving the anti-vibration performance of the heat exchanger;

[0033] A double tube sheet assembly 5 is arranged between the outer shell 1 and the shell head 2. The inlet end and the outlet end of the wound tube 3 are symmetrically arranged on the double tube sheet assembly 5. The double tube sheet assembly 5 includes two tube sheets 501. The two tube sheets 501 are arranged in parallel between the outer shell 1 and the shell head 2;

[0034] The utility model is provided with a double tube sheet assembly 5. The outer shell 1 and the shell head 2 are separated by two tube sheets 501, avoiding leakage problems between the outer shell 1 and the shell head 2, thereby preventing the cross - mixing of the tube - side medium and the shell - side medium, and significantly improving the safety and reliability of the heat exchanger;

[0035] A partition plate 6 is arranged in the shell head 2. The partition plate 6 is used to separate the inlet end and the outlet end of the corresponding wound tube 3 in the shell head 2 to form a tube - side medium inlet cavity and a tube - side medium outlet cavity. A tube - side medium inlet end 9 and a tube - side medium outlet end 10 are respectively arranged on the outer sides of the shell head 2 corresponding to the tube - side medium inlet cavity and the tube - side medium outlet cavity. A shell - side medium inlet end 11 is arranged at the upper part of the outer shell 1, and a shell - side medium outlet end 12 is arranged at the bottom of the outer shell 1;

[0036] The utility model is provided with a partition plate 6. On the basis of the double tube sheet assembly 5, the inlet end and the outlet end of the corresponding wound tube 3 in the shell head 2 are separated by the partition plate 6 to form a tube - side medium inlet cavity and a tube - side medium outlet cavity. By separating different fluid channels, the direct contact between different media is avoided, and the risk of cross - contamination is reduced.

[0037] In summary, the usage method of the anti - leakage and anti - vibration single - pass wound - tube heat exchanger provided in this embodiment: The tube - side medium enters the tube - side medium inlet cavity in the shell head 2 through the tube - side medium inlet end 9, and then enters the wound tube 3 through the inlet end of the wound tube 3. The shell - side medium enters the outer shell 1 through the shell - side medium inlet end 11. The tube - side medium and the shell - side medium complete heat exchange through the wound tube 3. The tube - side medium enters the tube - side medium outlet cavity through the outlet end of the wound tube 3, and then is discharged through the tube - side medium outlet end 10. The shell - side medium is discharged through the shell - side medium outlet end 12.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A single-stream tube-wound heat exchanger that is leak-proof and vibration-resistant, characterized in that: It comprises an outer shell (1) and a shell head (2), wherein a winding tube (3) is arranged inside the outer shell (1); The winding tube (3) is of a multi-layer structure, and the lead-out section of the winding tube (3) is provided with an anti-vibration component (4), and the anti-vibration component (4) is used to separate and fix the winding tube (3) in layers; A double tube sheet assembly (5) is arranged between the outer shell (1) and the shell head (2); the inlet end and the outlet end of the winding tube (3) are symmetrically arranged on the double tube sheet assembly (5); a partition plate (6) is arranged in the shell head (2); the partition plate (6) is used to separate the corresponding inlet end and outlet end of the winding tube (3) in the shell head (2) to form a tube-side medium inlet cavity and a tube-side medium outlet cavity.

2. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 1, characterized in that: A central cylinder (7) is arranged inside the outer shell (1), and multiple layers of the winding tubes (3) are alternately wound around the central cylinder (7) in a U-shaped structure.

3. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 2, characterized in that: A cushion strip (8) is provided between the innermost winding tube (3) and the central cylinder (7).

4. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 1, characterized in that: The anti-vibration assembly (4) comprises an annular metal belt (401) and an annular saddle-shaped pipe support (402); A plurality of the annular saddle-shaped tube supports (402) are provided, and the multiple layers of the winding tubes (3) are separated and fixed by the plurality of the annular saddle-shaped tube supports (402), and the annular metal belt (401) is provided on the outside of the outermost layer of the winding tubes (3).

5. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 4, characterized in that: The annular saddle-shaped tube support (402) is provided with saddle-shaped grooves (403) distributed at equal intervals, and the winding tube (3) is fixed at equal intervals by the saddle-shaped grooves (403) on the annular saddle-shaped tube support (402).

6. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 1, characterized in that: The double tube sheet assembly (5) comprises two tube sheets (501), and the two tube sheets (501) are arranged in parallel between the outer shell (1) and the shell head (2).

7. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 1, characterized in that: A tube-side medium inlet end (9) and a tube-side medium outlet end (10) are respectively arranged on the shell cover (2) on the outer sides corresponding to the tube-side medium inlet cavity and the tube-side medium outlet cavity.

8. The leakage-proof and vibration-resistant single-stream coil-wound heat exchanger according to claim 1, characterized in that: The upper portion of the outer shell (1) is provided with a shell-side medium inlet end (11), and the bottom portion of the outer shell (1) is provided with a shell-side medium outlet end (12).

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