Anti-corrosion intelligent modular heat exchanger
By using anticorrosion materials and setting up spoilers inside the heat exchange tube, the problems of low heat transfer coefficient and easy scaling of traditional heat exchangers are solved, and efficient heat exchange and long-life equipment are achieved.
Patent Information
- Application Number
- CN202421077138.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Traditional heat exchangers have low heat transfer coefficient, large volume, poor heat exchange effect, and are prone to scaling and low-temperature corrosion.
The shell and heat exchange tube are made of anti-corrosion materials, and spoilers are installed inside the heat exchange tube. The spoilers made of nylon and carbon fiber reinforced materials can rotate in water, changing the fluid state to improve the heat transfer coefficient, while keeping the inner wall of the heat exchange tube clean.
It improves heat transfer coefficient more than twice, avoids scaling and corrosion problems, reduces energy waste, and extends the service life of the equipment.
Smart Images
Figure CN222938297U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to an anti-corrosion intelligent modular heat exchanger. Background Art
[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. According to the heat transfer principle, heat exchangers are classified into direct contact heat exchangers, compound heat exchangers, etc.; according to the structure, they are classified into floating head heat exchangers, fixed tube sheet heat exchangers, U-tube sheet heat exchangers, plate heat exchangers, etc. Heat exchangers play an important role in the fields of chemical industry, petroleum, power, food, heating, power plants, and petrochemical industry. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, reboilers, etc., and are widely used.
[0003] When the heat exchanger is working, when the exhaust air and fresh air flow through the heat exchanger core in a positive cross-flow manner respectively, due to the temperature difference and steam partial pressure difference between the airflows on both sides of the air flow partition plate, heat and mass transfer phenomena occur when the two airflows pass through the partition plate, causing a total heat exchange process. Under the condition that the inlet and outlet temperatures of the cold and hot fluids are certain, when neither of the two fluids undergoes a phase change, the average temperature difference of the countercurrent flow is the largest and the co-current flow is the smallest. Under the condition of completing the same heat transfer amount, using the countercurrent flow can increase the average temperature difference and reduce the heat transfer area of the heat exchanger. If the heat transfer area remains unchanged, using the countercurrent flow can reduce the consumption of the heating or cooling fluid. The former can save equipment costs, and the latter can save operating costs. Therefore, countercurrent heat exchange should be adopted as much as possible in design or production use.
[0004] In fact, a heat exchanger transfers the heat of an object on one side to an object on the other side through heat conduction. However, according to the different types of heat exchangers, the specific working principles and usage methods are also different. For example, an air heat exchanger is mainly used for heating air in a drying system. It is the main equipment in a hot air device. However, traditional heat exchangers have problems such as low heat transfer coefficient, large volume, poor heat exchange effect, easy fouling of heat exchange tubes, and low-temperature corrosion. Content of the Utility Model
[0005] The purpose of the utility model is to solve the disadvantages of the traditional heat exchanger in the prior art, such as low heat transfer coefficient, large volume, poor heat exchange effect, easy fouling of heat exchange tubes, and low-temperature corrosion, and to propose an anti-corrosion intelligent modular heat exchanger.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an anti-corrosion intelligent modular heat exchanger, including: the shell of the heat exchanger, an anti-corrosion heat exchange tube is arranged inside the shell, a spoiler is arranged inside the heat exchange tube, and a waste heat recovery module is installed inside the shell.
[0007] The present utility model can be further configured such that the housing is made of an anti-corrosion material, specifically tetrafluoroethylene, polytetrafluoroethylene, PVC or Pe, which is resistant to organic solvents or strong acids and alkalis, has excellent corrosion resistance to strong acids and alkalis, has no requirements for the components of the residual hot gas and the dew point temperature, does not require control of the dew point temperature, has a wide application range, has a high surface finish of the material, does not accumulate ash or scale, is easy to clean, has a thin wall of the material pipe, makes up for the disadvantage of the low thermal conductivity of the material itself, has a high heat exchange performance, excellent flexibility and anti-aging performance, and has a service life of greater than or equal to eight years.
[0008] The present utility model can be further configured such that the heat exchange tube is made of tetrafluoroethylene, polytetrafluoroethylene, PVC or Pe material, and is hot melt welded to the heat exchange tube sheet, with firm welding and no leakage.
[0009] The present utility model can be further configured such that the spoiler is made of nylon and carbon fiber reinforced material, with high strength and light weight.
[0010] The present utility model can be further configured such that the heat exchanger is of a modular structure, which is convenient for transportation and simple to install. The heat exchanger can automatically detect data and adjust operation parameters to ensure safe and efficient operation.
[0011] The present utility model can be further configured such that a flue gas inlet is provided at the bottom of the housing, and a flue gas outlet is provided at the top of the housing.
[0012] The present utility model can be further configured such that the flue gas enters the interior of the housing from the flue gas inlet and then exits from the flue gas outlet. Since the flue gas inlet and the flue gas outlet have smoke passing through for a long time, impurities left in the smoke will adhere to the inner wall, and it is necessary to clean them regularly.
[0013] The present utility model can be further configured such that a filter screen can be installed at the position of the flue gas inlet to filter impurities in the smoke and prevent the impurities in the smoke from damaging the heat exchanger.
[0014] An anti-corrosion intelligent modular heat exchanger proposed by the present utility model has the following beneficial effects:
[0015] 1. This device solves the problems of corrosion, leakage and excessive emissions of traditional metal heat exchangers. It is made of corrosion-resistant materials (tetrafluoroethylene, polytetrafluoroethylene, PVC or Pe), assembled in a modular manner, automatically collects operation parameters, and adjusts the operation quantity of the flue gas recovery module according to the set parameters; a spoiler is installed in the heat exchange tube. Without changing the original structure of the heat exchanger, the heat transfer coefficient is increased by more than twice, and it has many advantages such as high heat transfer coefficient, no scaling and reduction of energy waste.
[0016] 2. The spoiler is made of nylon and carbon fiber reinforced material, which has high strength and light weight. It floats in water and rotates in the heat exchange tube by the action of water flow, changing the water flow entering the heat exchange tube from laminar flow to turbulent flow, strengthening heat exchange, increasing the heat transfer coefficient. The spoiler rotates in water, enabling impurities that are likely to coalesce on the tube wall to be discharged with the water flow, keeping the inner wall of the heat exchange tube clean and free of scale. Brief Description of the Drawings
[0017] Figure 1 It is a schematic structural diagram of the heat exchanger proposed by the present utility model;
[0018] Figure 2 It is a schematic internal structure diagram of the heat exchange tube proposed by the present utility model;
[0019] Figure 3 It is a schematic diagram of the waste heat recovery module of the heat exchanger proposed by the present utility model.
[0020] In the figure: 1. Shell; 2. Heat exchange tube; 3. Spoiler; 4. Waste heat recovery module; 5. Flue gas inlet; 6. Flue gas outlet. Detailed Embodiment
[0021] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following will describe the embodiments according to the overall structure of the present utility model.
[0023] In order to solve the problems existing in the prior art, such as the low heat transfer coefficient of traditional metal heat exchangers, large volume, poor heat exchange effect, easy fouling of heat exchange tubes and low-temperature corrosion, an anti-corrosion intelligent modular heat exchanger is proposed, including the shell 1 of the heat exchanger. The shell 1 is made of anti-corrosion materials, specifically tetrafluoroethylene, polytetrafluoroethylene, PVC or Pe, which are resistant to organic solvents or strong acids and alkalis, have excellent corrosion resistance to strong acids and alkalis, have no requirements for the components of waste heat gas and dew point temperature, do not need to control the dew point temperature, have a wide application range, high surface finish of the material, do not accumulate ash, do not scale, and are easy to clean. The material of the tube wall is thin, which makes up for the disadvantage of the low thermal conductivity of the material itself, has high heat exchange performance, excellent flexibility and anti-aging performance, and the service life is greater than or equal to eight years.
[0024] Furthermore, an anti-corrosion heat exchange tube 2 is arranged inside the shell 1. The heat exchange tube 2 is made of tetrafluoroethylene, polytetrafluoroethylene, PVC or Pe materials and is hot melt welded to the heat exchange tube plate. The welding is firm and there is no leakage. A spoiler 3 is arranged inside the heat exchange tube 2. The spoiler 3 is made of nylon and carbon fiber reinforced materials, has high strength and light weight, floats in water, and rotates in the heat exchange tube by relying on the action of water flow, so that the water flow entering the heat exchange tube changes from laminar flow state to turbulent flow, strengthens heat exchange, and improves the heat transfer coefficient. The spoiler 3 rotates in water, so that the impurities that are easy to coalesce on the tube wall are discharged with the water flow, keeping the inner wall of the heat exchange tube clean and not scaling.
[0025] Furthermore, a waste heat recovery module 4 is installed inside the shell 1, which can automatically collect operation parameters and adjust the operation quantity of the flue gas recovery module according to the set parameters.
[0026] It can be obtained that a flue gas inlet 5 is arranged at the bottom of the shell 1, and a flue gas outlet 6 is arranged at the top of the shell 1. The flue gas enters the inside of the shell 1 from the flue gas inlet 5 and then discharges from the flue gas outlet 6. Since there is long-term smoke passing through the flue gas inlet 5 and the flue gas outlet 6, impurities left in the smoke will adhere to the inner walls, and it is necessary to clean them regularly. In order to reduce the cleaning process, a filter screen can be installed at the position of the flue gas inlet 5 to filter the impurities in the smoke and prevent the impurities in the smoke from damaging the heat exchanger.
[0027] It should be noted that the heat exchanger is of modular structure, convenient for transportation and simple to install. The heat exchanger can automatically detect data and adjust operation parameters to ensure safe and efficient operation.
[0028] Working principle: The flue gas enters the interior of the housing 1 from the flue gas inlet 5 and then discharges from the flue gas outlet 6. A filter screen can be installed at the position of the flue gas inlet 5 to filter the impurities in the smoke, preventing the impurities in the smoke from damaging the heat exchanger. By arranging a spoiler 3 inside the heat exchange tube 2, the spoiler 3 is made of nylon and carbon fiber reinforced material, with high strength and light weight, floating in water, and rotating in the heat exchange tube by relying on the action of the water flow, so that the water flow entering the heat exchange tube changes from laminar flow state to turbulent flow, strengthening the heat exchange and increasing the heat transfer coefficient. The spoiler 3 rotates in the water, enabling the impurities that are likely to coalesce on the tube wall to be discharged with the water flow, keeping the inner wall of the heat exchange tube clean and free of fouling. Since the flue gas inlet 5 and the flue gas outlet 6 have smoke passing through for a long time, impurities left by the smoke will adhere to their inner walls, and they need to be cleaned regularly.
[0029] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.
Claims
1. An anti-corrosion intelligent modular heat exchanger, comprising: The shell (1) of the heat exchanger is characterized in that: an anti-corrosion heat exchange tube (2) is arranged inside the shell (1), a spoiler (3) is arranged inside the heat exchange tube (2), a waste heat recovery module (4) is installed inside the shell (1), a flue gas inlet (5) is arranged at the bottom of the shell (1), and a flue gas outlet (6) is arranged at the top of the shell (1).
2. The anti-corrosion intelligent modular heat exchanger according to claim 1, characterized in that: A filter screen is installed at the position of the smoke inlet (5).