Anti-scale shell-and-tube heat exchanger
By introducing movable plates and rods into the shell-and-tube heat exchanger to drive scrapers or scrapers to remove scale, the problem of scale buildup on heat exchange tubes is solved, achieving a highly efficient self-cleaning function, simplifying the maintenance process, and improving the heat exchange effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-03-17
AI Technical Summary
Existing shell-and-tube heat exchangers lack cleaning functions during use, resulting in a large amount of scale buildup on the heat exchange tubes, which affects heat transfer efficiency and requires regular disassembly and cleaning, a cumbersome and time-consuming process.
A scale-resistant shell-and-tube heat exchanger was designed, which uses a movable plate and a movable rod to drive a scraper or scraper to move inside and outside the heat exchange tubes to scrape off scale, which is then periodically discharged through the scale outlet, simplifying the cleaning process.
It effectively removes scale from inside and outside the heat exchange tubes, ensuring heat conduction, improving heat exchange efficiency, simplifying the cleaning and maintenance process, and increasing the efficiency of equipment use.
Smart Images
Figure CN224004263U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat exchanger technology, and in particular to an anti-scaling shell-and-tube heat exchanger. Background Technology
[0002] Shell-and-tube heat exchangers are a traditional type of heat exchange equipment that can operate under high temperature and high pressure. They can adapt to the heat exchange needs of various media and operating conditions and are widely used in many fields such as chemical, petroleum, power, metallurgy, shipbuilding, refrigeration, and pharmaceutical. As an important heat exchange device, shell-and-tube heat exchangers play a vital role in industrial production and have broad application prospects and development potential.
[0003] Existing shell-and-tube heat exchangers lack self-cleaning capabilities during application. After a period of use, a large amount of scale will accumulate on the heat exchange tubes, severely affecting their heat transfer efficiency. Therefore, it is necessary to periodically disassemble the shell-and-tube heat exchanger and clean the inside and outside of the heat exchange tubes, a process that is rather cumbersome and time-consuming. Utility Model Content
[0004] This utility model relates to an anti-scaling shell-and-tube heat exchanger, which solves the problem that existing shell-and-tube heat exchangers lack self-cleaning functions during application. After a period of use, a large amount of scale will adhere to the heat exchange tubes, which seriously affects the heat transfer effect of the heat exchange tubes. Therefore, it is necessary to disassemble the shell-and-tube heat exchanger regularly to clean the inside and outside of the heat exchange tubes, which is a cumbersome and time-consuming process.
[0005] In a first aspect, this utility model provides a scale-resistant shell-and-tube heat exchanger, specifically comprising: a multi-tube assembly, an inlet heat shield, an outlet heat shield, a shell, a sealing cover A, a sealing cover B, a movable plate, and a movable rod; heat exchange tubes are arranged in an array inside the multi-tube assembly, one end of the multi-tube assembly is fixedly connected to the inlet heat shield, and the other end of the multi-tube assembly is connected to the outlet heat shield; the shell is connected to the outside of the multi-tube assembly, and the sealing cover B is connected to the bottom of the shell; the sealing cover A is connected to the bottom of the outlet heat shield, and the movable plate is connected to the outside of the outlet heat shield, and the movable plate is connected to the multi-tube assembly; a movable rod is connected inside the outlet heat shield, and the movable rod is connected to the multi-tube assembly.
[0006] Furthermore, the bottom of the heat inlet shroud is provided with a heat inlet, one end of the heat exchange tube is connected to the heat inlet shroud, the top of the heat outlet shroud is provided with a heat outlet, and the other end of the heat exchange tube is connected to the heat outlet shroud.
[0007] Furthermore, the heat exchange tube is located inside the shell, and the shell is provided with a heat exchange inlet and a heat exchange outlet. High-temperature steam enters the heat exchange tube through the heat inlet hood and then exits through the heat outlet hood. Heat exchange water enters the shell through the heat exchange inlet, is heated by the heat exchange tube, and then exits through the heat exchange outlet.
[0008] Furthermore, scrapers are arranged in a row on one side of the movable plate, and a through hole A is provided inside the heat outlet cover. The scrapers pass through the through hole A and move inside the heat exchange tube. When scale appears inside the heat exchange tube after long-term use, the movable plate is pulled, and the movable plate drives the scrapers to move inside the heat exchange tube. The scale adhering to the inner wall of the scrapers is scraped off by the scrapers.
[0009] Furthermore, the bottom of the heat outlet hood is provided with a scale discharge port A, and a sealing cover A is threadedly connected to the outside of the scale discharge port A. Scale falls into the scale discharge port A, and the staff opens the sealing cover A regularly to drain the scale inside the heat outlet hood.
[0010] Furthermore, the multi-tube device has a guide hole inside, and the heat outlet cover has a through hole B inside. The movable rod slides through the guide hole and the through hole B. The end of the movable rod is equipped with a scraper, and scraping holes are arranged inside the scraper. The heat exchange tube slides through the scraping holes. When scale appears on the outside of the heat exchange tube after long-term use, the movable rod is pulled, and the movable rod drives the scraper to move outside the heat exchange tube. The scale adhering to the outer wall of the scraper is scraped off by the scraper.
[0011] Furthermore, the bottom of the outer casing is provided with a scale drain port B, and a sealing cover B is threaded to the outside of the scale drain port B. Scale falls into the scale drain port B, and the staff opens the sealing cover B regularly to drain the scale inside the outer casing.
[0012] This utility model provides an anti-scaling shell-and-tube heat exchanger, which has the following beneficial effects:
[0013] In use, high-temperature steam enters the heat exchange tube through the heat inlet hood and then exits through the heat outlet hood. The heat exchange water enters the outer shell through the heat exchange inlet, is heated by the heat exchange tube, and then exits through the heat exchange outlet, thus achieving the heat exchange effect.
[0014] In addition, when scale forms inside the heat exchange tubes after long-term use, pulling the movable plate will cause the scraper to move inside the heat exchange tubes. The scraper will remove the scale adhering to the inner wall of the scraper, effectively ensuring the heat conduction effect of the heat exchange tubes and thus improving the heat exchange effect of the shell-and-tube heat exchanger. The scale falls to the scale drain port A, and the staff can open the sealing cover A regularly to drain the scale inside the heat outlet cover.
[0015] In addition, when scale forms on the outside of the heat exchange tube after long-term use, pulling the movable rod will cause the scraper to move outside the heat exchange tube. The scraper will remove the scale adhering to the outer wall of the scraper, further ensuring the heat conduction effect of the heat exchange tube and enabling the shell-and-tube heat exchanger to have excellent heat exchange performance. The scale falls to the scale drain port B, and the staff can open the sealing cover B regularly to drain the scale inside the shell.
[0016] Other advantages, objectives and features of this invention will be apparent in part from the following description, and in part from the understanding of those skilled in the art through study and practice of this invention. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.
[0018] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.
[0019] In the attached diagram:
[0020] Figure 1 A schematic diagram of the overall axonometric structure of this application is shown;
[0021] Figure 2 This paper shows a schematic diagram of the disassembled structure of the multi-tube assembly, heat inlet shroud, and outer casing of this application;
[0022] Figure 3 This paper shows a schematic diagram of the disassembled structure of the multi-tube device and the heat outlet shroud of this application;
[0023] Figure 4 A schematic diagram of the axonal structure of the movable plate of this application is shown;
[0024] Figure 5 A schematic diagram of the axle structure of the active rod of this application is shown.
[0025] List of reference numerals
[0026] 1. Multi-tube assembly; 11. Heat exchange tube; 12. Guide hole; 2. Heat inlet cover; 21. Heat inlet port; 3. Heat outlet cover; 31. Heat outlet port; 32. Through hole A; 33. Through hole B; 34. Scale discharge port A; 4. Outer shell; 41. Heat exchange inlet; 42. Heat exchange outlet; 43. Scale discharge port B; 5. Sealing cover A; 6. Sealing cover B; 7. Movable plate; 71. Scraper rod; 8. Movable rod; 81. Scraper; 811. Scraper hole. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] Example 1: Please refer to Figures 1 to 5 :
[0029] This utility model proposes an anti-scaling shell-and-tube heat exchanger, comprising: a multi-tube assembly 1, an inlet heat shield 2, an outlet heat shield 3, a shell 4, a sealing cover A5, a sealing cover B6, a movable plate 7, and a movable rod 8; heat exchange tubes 11 are arranged in an array inside the multi-tube assembly 1; one end of the multi-tube assembly 1 is fixedly connected to the inlet heat shield 2, and the other end of the multi-tube assembly 1 is connected to the outlet heat shield 3; the shell 4 is connected to the outside of the multi-tube assembly 1, and the sealing cover B6 is connected to the bottom of the shell 4; the sealing cover A5 is connected to the bottom of the outlet heat shield 3, and the movable plate 7 is connected to the outside of the outlet heat shield 3, and the movable plate 7 is connected to the multi-tube assembly 1; heat exchange tubes 11 are arranged in an array inside the multi-tube assembly 1. Movable rod 8 is connected to multi-tube device 1; a heat inlet 21 is provided at the bottom of the heat inlet shroud 2, one end of heat exchange tube 11 is connected to the heat inlet shroud 2, a heat outlet 31 is provided at the top of the heat outlet shroud 3, and the other end of heat exchange tube 11 is connected to the heat outlet shroud 3; the heat exchange tube 11 is located inside the outer shell 4, and a heat exchange inlet 41 and a heat exchange outlet 42 are provided outside the outer shell 4; high-temperature steam enters the heat exchange tube 11 through the heat inlet shroud 2 and then exits through the heat outlet shroud 3; heat exchange water enters the outer shell 4 through the heat exchange inlet 41, is heated by the heat exchange tube 11, and then exits through the heat exchange outlet 42, thereby achieving the heat exchange effect.
[0030] In this embodiment of the utility model, scraper rods 71 are arranged in a row on one side of the movable plate 7, and a through hole A32 is provided inside the heat outlet cover 3. The scraper rods 71 pass through the through hole A32 and move inside the heat exchange tube 11. A scale discharge port A34 is provided at the bottom of the heat outlet cover 3, and a sealing cover A5 is threaded to the outside of the scale discharge port A34.
[0031] Using the above technical solution, when scale appears inside the heat exchange tube 11 after long-term use, the movable plate 7 is pulled, and the movable plate 7 drives the scraper 71 to move inside the heat exchange tube 11. The scale adhering to the inner wall of the scraper 71 is scraped off by the scraper 71, which effectively ensures the heat conduction effect of the heat exchange tube 11 and thus improves the heat exchange effect of the shell and tube heat exchanger. The scale falls to the scale drain port A34, and the staff can open the sealing cover A5 regularly to drain the scale inside the heat outlet cover 3.
[0032] In this embodiment of the utility model, the multi-tube device 1 is provided with a guide hole 12, the heat outlet cover 3 is provided with a through hole B33, the movable rod 8 slides through the guide hole 12 and the through hole B33, the end of the movable rod 8 is provided with a scraper 81, the scraper 81 is provided with scraping holes 811 arranged in a pattern inside the scraper 81, the heat exchange tube 11 slides through the scraping holes 811, the bottom of the outer shell 4 is provided with a scale discharge port B43, and the sealing cover B6 is threaded to the outside of the scale discharge port B43;
[0033] Using the above technical solution, when scale appears on the outside of the heat exchange tube 11 after long-term use, the movable rod 8 is pulled, and the movable rod 8 drives the scraper 81 to move outside the heat exchange tube 11. The scraper 81 scrapes off the scale adhering to the outer wall of the scraper 71, further ensuring the heat conduction effect of the heat exchange tube 11 and enabling the shell-and-tube heat exchanger to have excellent heat exchange effect. The scale falls to the scale drain port B43, and the staff can open the sealing cover B6 regularly to drain the scale inside the outer shell 4.
[0034] The working principle of this embodiment is as follows: High-temperature steam enters the heat exchange tube 11 through the heat inlet hood 2 and then exits through the heat outlet hood 3. Heat exchange water enters the outer shell 4 through the heat exchange inlet 41, is heated by the heat exchange tube 11, and then exits through the heat exchange outlet 42, achieving heat exchange. When scale accumulates inside the heat exchange tube 11 after long-term use, the movable plate 7 is pulled, causing the scraper 71 to move inside the heat exchange tube 11. The scraper 71 removes the scale adhering to its inner wall, effectively ensuring the heat conduction effect of the heat exchange tube 11. The scale scraped off falls to the scale drain port A34. Staff can regularly open the sealing cover A5 to drain the scale inside the heat outlet cover 3. When scale appears on the outside of the heat exchange tube 11 after long-term use, pull the movable rod 8. The movable rod 8 drives the scraper 81 to move outside the heat exchange tube 11. The scraper 81 scrapes off the scale adhering to the outer wall of the scraper 71, further ensuring the heat conduction effect of the heat exchange tube 11. The scale scraped off by the scraper 81 falls to the scale drain port B43. Staff can regularly open the sealing cover B6 to drain the scale inside the outer shell 4.
[0035] The following points should be noted in this article:
[0036] 1. The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.
[0037] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.
[0038] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A scale resistant shell and tube heat exchanger comprising: The utility model provides a kind of multi-tube device (1), heat cover (2), heat cover (3), shell (4), sealing cover A (5), sealing cover B (6), movable plate (7) and movable rod (8);It is characterized in that, the inside of the multi-tube device (1) is arranged with heat exchange tube (11) in array, and one end of multi-tube device (1) is fixedly connected with heat cover (2), and the other end of multi-tube device (1) is connected with heat cover (3);The outside of the multi-tube device (1) is connected with shell (4), and the bottom of shell (4) is connected with sealing cover B (6);The bottom of heat cover (3) is connected with sealing cover A (5), and the outside of heat cover (3) is connected with movable plate (7), and movable plate (7) is connected with multi-tube device (1);The inside of heat cover (3) is connected with movable rod (8), and movable rod (8) is connected with multi-tube device (1).
2. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, the bottom of the heat cover (2) is provided with a heat inlet (21), one end of the heat exchange tube (11) is communicated with the heat cover (2), and the top of the heat cover (3) is provided with a heat outlet (31), the other end of the heat exchange tube (11) is communicated with the heat cover (3).
3. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, the heat exchange tube (11) is located in the shell (4), and the shell (4) is provided with a heat inlet (41) and a heat outlet (42) outside.
4. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, one side of the movable plate (7) is provided with a scraper rod (71) in array, the heat cover (3) is provided with a through hole A (32) inside, the scraper rod (71) penetrates into the through hole A (32), and the scraper rod (71) moves in the heat exchange tube (11).
5. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, the bottom of the heat cover (3) is provided with a scale removal opening A (34), and the sealing cover A (5) is threadedly connected outside the scale removal opening A (34).
6. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, the inside of the multi-tube device (1) is provided with a guide hole (12), the inside of the heat cover (3) is provided with a through hole B (33), the movable rod (8) slides and penetrates into the guide hole (12) and the through hole B (33), the end of the movable rod (8) is provided with a scraper plate (81), the inside of the scraper plate (81) is provided with a scraper hole (811) in array, and the heat exchange tube (11) slides and penetrates into the scraper hole (811).
7. The scale-preventing shell-and-tube heat exchanger according to claim 1, wherein, the bottom of the shell (4) is provided with a scale removal opening B (43), and the sealing cover B (6) is threadedly connected outside the scale removal opening B (43).