Shell-and-tube teflon heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube teflon heat exchanger. Comprising an adjustable supporting assembly, an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected through a supporting frame, one side of the upper shell is fixedly connected with a first shell cover, one side of the lower shell is fixedly connected with a second shell cover, and the upper shell and the lower shell are communicated through a first connecting pipe; the first shell cover and the second shell cover are communicated through a second connecting pipe, fixed pipe plates are fixedly connected in the upper shell and the lower shell, heat exchange pipes are fixedly connected to one sides of the fixed pipe plates, and flow separation plates are arranged in the first shell cover and the second shell cover. The corrosion-resistant valve is made of a Teflon material, has excellent corrosion resistance, and can meet the requirement of long-term stable operation in a highly corrosive medium; meanwhile, by adopting the tube-shell type structural design and combining the adjustable supporting assembly, the mechanical strength and stability of the heat exchanger are improved, and safe operation of equipment in the high-temperature and high-pressure environment is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of heat exchangers, in particular to a shell and tube type Teflon heat exchanger. Background Art

[0002] In modern industrial production, heat exchangers, as a key equipment, are widely used in many fields such as petroleum, chemical industry, electric power, metallurgy, refrigeration, food, shipbuilding, nuclear industry, etc. The main function of a heat exchanger is to transfer heat from one medium to another through a heat exchange process to achieve the purpose of heating or cooling. With the continuous advancement of industrial technology, the performance requirements for heat exchangers are becoming higher and higher, especially for corrosion resistance, high temperature and high pressure resistance, high efficiency and energy saving, etc.

[0003] Traditional heat exchangers are mostly made of metal materials, such as carbon steel, stainless steel, copper, etc. However, in some special industrial applications, such as when dealing with corrosive media such as strong acids, strong alkalis, and strong oxidants, metal heat exchangers often cannot meet the requirements of long-term stable operation. Metal materials are prone to corrosion in these media, which shortens the life of the heat exchanger, increases maintenance costs, and may even cause production accidents. Therefore, it is particularly urgent to develop a new type of corrosion-resistant heat exchanger.

[0004] As a high-performance synthetic polymer material, Teflon (polytetrafluoroethylene) has excellent corrosion resistance, high and low temperature resistance, low friction coefficient and good electrical insulation. Due to its unique chemical stability, Teflon material hardly undergoes chemical reaction in highly corrosive media, so it is widely used in chemical, pharmaceutical, food processing and other industries.

[0005] However, when the existing Teflon heat exchanger is installed and used, the overall shape is relatively fixed, so it is inconvenient for users to adjust the height of the heat exchanger, which causes certain effects during use. Summary of the invention

[0006] The present invention provides a shell and tube Teflon heat exchanger, which is made of Teflon material and has excellent corrosion resistance, and can meet the requirements of long-term stable operation in highly corrosive media; at the same time, by adopting a shell and tube structure design and combining an adjustable support component, the mechanical strength and stability of the heat exchanger are improved, ensuring the safe operation of the equipment in a high temperature and high pressure environment.

[0007] The technical solution adopted by the present invention is: a shell and tube Teflon heat exchanger, comprising an adjustable supporting assembly and an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected by a supporting frame, a first shell cover is fixedly connected to one side of the upper shell, a second shell cover is fixedly connected to one side of the lower shell, a water inlet pipe is fixedly connected to the top of the first shell cover, a water inlet pipe is fixedly connected to the top of the upper shell away from the first shell cover, the upper shell and the lower shell are connected by a first connecting pipe, the first shell cover and the second shell cover are connected by a second connecting pipe, a drain pipe is fixedly connected to the bottom of the lower shell away from the second shell cover, a water outlet pipe is fixedly connected to the bottom of the second shell cover, fixed tube sheets are fixedly connected inside the upper shell and the lower shell, a heat exchange tube is fixedly connected to one side of the fixed tube sheet, and flow partitions fixedly connected to the fixed tube sheets are provided inside the first shell cover and the second shell cover.

[0008] As a further improvement of the present invention, the adjustable support assembly includes a base plate, to which a dual-axis motor and a fixing frame located on both sides of the dual-axis motor are fixedly connected, two output ends of the dual-axis motor are fixedly connected to an active bevel gear, one side of the active bevel gear is provided with a first screw rotatably connected to the fixing frame, a fixed sleeve outside the first screw is provided with a driven bevel gear meshing with the active bevel gear, a lifting seat is threadedly connected to the top of the first screw, a lower support plate is fixedly connected to the top of the lifting seat, an upper support plate is provided above the lower support plate, connecting seats are fixedly connected to both sides of the lower support plate and the upper support plate, the two connecting seats located on the same side are connected by a second screw, and fastening bolts are provided at both ends of the second screw.

[0009] As a further improvement of the present invention, the first screw rod passes through the top wall of the fixing frame, the first screw rod is rotatably connected to the top wall of the fixing frame via a first bearing, and the bottom end of the first screw rod is rotatably connected to the bottom wall of the fixing frame via a second bearing.

[0010] As a further improvement of the present invention, the bottom of the lifting seat is provided with an internal thread groove matching with the first screw rod, the top of the fixing frame is fixedly connected with two guide rods, and the bottom of the lifting seat is provided with a guide groove matching with the guide rods.

[0011] As a further improvement of the present invention, the lower support plate and the upper support plate are respectively located at the bottom and the top of the lower shell.

[0012] As a further improvement of the present invention, a plurality of upper deflection baffles and lower deflection baffles are fixedly connected inside the upper shell and the lower shell, and the upper deflection baffles and the lower deflection baffles are arranged at intervals.

[0013] As a further improvement of the present invention, the heat exchange tube is of U-shaped design.

[0014] Beneficial effects of the present invention: (1) Flexible installation and adjustment capabilities: By introducing an adjustable support assembly, the heat exchanger of the present invention has a high degree of flexibility during installation and use. Users can easily adjust the height of the heat exchanger according to actual needs to adapt to different installation environments and operating requirements. This not only improves the applicability of the equipment, but also reduces the difficulty of installation and debugging, bringing great convenience to users.

[0015] (2) High efficiency heat exchange performance: The heat exchanger of the present invention adopts a shell and tube structure design, and is combined with a U-shaped heat exchange tube and an upper baffle and a lower baffle arranged inside. The heat exchanger can form an orderly fluid flow, increase the heat exchange opportunities between the fluid and the heat exchange tube, and effectively improve the heat exchange efficiency. The heat exchanger can achieve a larger heat exchange area in a smaller volume, thereby meeting the requirements of high efficiency and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a shell and tube Teflon heat exchanger of the present invention;

[0017] Figure 2 It is a partial structural schematic diagram of a shell and tube Teflon heat exchanger of the present invention;

[0018] Figure 3 It is a partial structural cross-sectional view of a shell and tube Teflon heat exchanger of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of an adjustable support assembly of a shell and tube Teflon heat exchanger of the present invention;

[0020] Figure 5 It is a partial cross-sectional view of an adjustable support assembly of a shell and tube Teflon heat exchanger of the present invention;

[0021] Figure 6 The present invention is a shell and tube Teflon heat exchanger Figure 5 Schematic diagram of part A in the middle.

[0022] As shown in the figure: 1. Adjustable support assembly; 1.1. Bottom plate; 1.2. Dual-axis motor; 1.3. Fixed frame; 1.4. Active bevel gear; 1.5. First screw; 1.6. Driven bevel gear; 1.7. Lifting seat; 1.8. Lower support plate; 1.9. Upper support plate; 1.10. Connecting seat; 1.11. Second screw; 1.12. Fastening bolt; 1.13. First bearing; 1.14. Second bearing; 1.15. Guide rod; 2. Upper shell; 3. Lower shell; 4. Support frame; 5. First shell cover; 6. Second shell cover; 7. Water inlet pipe; 8. Water inlet pipe; 9. First connecting pipe; 10. Second connecting pipe; 11. Drain pipe; 12. Water outlet pipe; 13. Fixed tube sheet; 14. Heat exchange tube; 15. Flow partition; 16. Upper baffle plate; 17. Lower baffle plate. DETAILED DESCRIPTION

[0023] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may change accordingly according to their different locations and different usage states; therefore, these or other directional terms should not be interpreted as restrictive terms.

[0024] The singular forms "a", "said" and "the" used in this specification are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and implementation methods. It should be understood that the implementation methods described herein are only used to explain this application and are not used to limit this application.

[0026] The present invention provides the following Figure 1-6A shell and tube Teflon heat exchanger shown in the figure comprises an adjustable support assembly 1 and an upper shell 2 and a lower shell 3. The upper shell 2 and the lower shell 3 are fixedly connected by a support frame 4. A first shell cover 5 is fixedly connected to one side of the upper shell 2, and a second shell cover 6 is fixedly connected to one side of the lower shell 3. A water inlet pipe 7 is fixedly connected to the top of the first shell cover 5, and a water inlet pipe 8 is fixedly connected to the top of the upper shell 2 away from the first shell cover 5. The upper shell 2 and the lower shell 3 are connected by a first connecting pipe 9, and the first shell cover 5 and the second shell cover 6 are connected by a second connecting pipe 10. A drain pipe 11 is fixedly connected to the bottom of the lower shell 3 away from the second shell cover 6, and a water outlet pipe 12 is fixedly connected to the bottom of the second shell cover 6. A fixed tube sheet 13 is fixedly connected to the upper shell 2 and the lower shell 3, and a heat exchange tube 14 is fixedly connected to one side of the fixed tube sheet 13. A flow partition 15 fixedly connected to the fixed tube sheet 13 is provided inside the first shell cover 5 and the second shell cover 6. A plurality of upper baffles 16 and lower baffles 17 are fixedly connected inside the upper shell 2 and the lower shell 3, and the upper baffles 16 and the lower baffles 17 are arranged at intervals, and the heat exchange tube 14 is of U-shaped design.

[0027] The adjustable support assembly 1 of the present invention comprises a bottom plate 1.1, a dual-axis motor 1.2 and a fixing frame 1.3 located on both sides of the dual-axis motor 1.2 are fixedly connected to the bottom plate 1.1, both output ends of the dual-axis motor 1.2 are fixedly connected to a driving bevel gear 1.4, one side of the driving bevel gear 1.4 is provided with a first screw 1.5 rotatably connected to the fixing frame 1.3, a fixed sleeve outside the first screw 1.5 is provided with a driven bevel gear 1.6 meshing with the driving bevel gear 1.4, a top end of the first screw 1.5 is threadedly connected to a lifting seat 1.7, a lower support plate 1.8 is fixedly connected to the top of the lifting seat 1.7, an upper support plate 1.9 is provided above the lower support plate 1.8, and both sides of the lower support plate 1.8 and the upper support plate 1.9 are fixedly connected to a connecting seat 1. 10, the two connecting seats 1.10 located on the same side are connected by a second screw 1.11, and fastening bolts 1.12 are provided at both ends of the second screw 1.11. The first screw 1.5 passes through the top wall of the fixing frame 1.3, and the first screw 1.5 is rotatably connected to the top wall of the fixing frame 1.3 through a first bearing 1.13. The bottom end of the first screw 1.5 is rotatably connected to the bottom wall of the fixing frame 1.3 through a second bearing 1.14. The bottom of the lifting seat 1.7 is provided with an internal thread groove matching the first screw 1.5, and the top of the fixing frame 1.3 is fixedly connected to two guide rods 1.15. The bottom of the lifting seat 1.7 is provided with a guide groove matching the guide rod 1.15. The lower support plate 1.8 and the upper support plate 1.9 are respectively located at the bottom and top of the lower shell 3.

[0028] Working principle: When the present invention is implemented, the dual-axis motor 1.2 of the adjustable support assembly 1 drives the two active bevel gears 1.4 to rotate. The active bevel gear 1.4 rotates to drive the first screw 1.5 to rotate through the driven bevel gear 1.6 meshing with it. The rotation of the first screw 1.5 causes the lifting seat 1.7 threadedly connected to it to slide, thereby realizing the lifting and lowering adjustment of the lower support plate 1.8 and the upper support plate 1.9. The overall height can be flexibly adjusted to adapt to different installation environments and usage requirements.

[0029] During operation, the hot medium enters the first shell cover 5 through the water inlet pipe 7, enters the heat exchange tube 14 inside the upper shell 2 through the flow partition 15, enters the first shell cover 5 below the flow partition 15 through the U-shaped heat exchange tube 14, and then enters the second shell cover 6 through the second connecting pipe 10. Similarly, it passes through the heat exchange tube 14 inside the lower shell 3 and finally flows out through the water outlet pipe 12; the cold medium enters the upper shell 2 through the water inlet pipe 8, and the orderly flow of the cold medium is achieved through the upper baffle 16 and the lower baffle 17, and enters the lower shell 3 through the first connecting pipe 9. Similarly, after the flow is guided by the upper baffle 16 and the lower baffle 17, it flows out through the drain pipe 11, ensuring a continuous and efficient heat exchange process.

[0030] The above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the implementation modes of the present invention.

Claims

1. A shell and tube Teflon heat exchanger, comprising an adjustable support assembly (1) and an upper shell (2) and a lower shell (3), characterized in that: The upper shell (2) and the lower shell (3) are fixedly connected via a support frame (4); a first shell cover (5) is fixedly connected to one side of the upper shell (2); a second shell cover (6) is fixedly connected to one side of the lower shell (3); a water inlet pipe (7) is fixedly connected to the top of the first shell cover (5); a water inlet pipe (8) is fixedly connected to the top of the side of the upper shell (2) away from the first shell cover (5); the upper shell (2) and the lower shell (3) are connected via a first connecting pipe (9); the first shell cover (5) and the second shell cover (6) are fixedly connected to each other. The first shell cover (5) and the second shell cover (6) are connected to each other through a second connecting pipe (10); a drainage pipe (11) is fixedly connected to the bottom of the lower shell (3) away from the second shell cover (6); a water outlet pipe (12) is fixedly connected to the bottom of the second shell cover (6); a fixed tube sheet (13) is fixedly connected inside the upper shell (2) and the lower shell (3); a heat exchange tube (14) is fixedly connected to one side of the fixed tube sheet (13); and a flow partition (15) fixedly connected to the fixed tube sheet (13) is provided inside the first shell cover (5) and the second shell cover (6).

2. A shell and tube Teflon heat exchanger according to claim 1, characterized in that: The adjustable support assembly (1) comprises a base plate (1.1), the base plate (1.1) being fixedly connected to a dual-axis motor (1.2) and a fixing frame (1.3) located on both sides of the dual-axis motor (1.2), both output ends of the dual-axis motor (1.2) being fixedly connected to a driving bevel gear (1.4), one side of the driving bevel gear (1.4) being provided with a first screw rod (1.5) rotatably connected to the fixing frame (1.3), and a driven bevel gear (1.5) meshing with the driving bevel gear (1.4) being provided on a fixing sleeve outside the first screw rod (1.5). .6), the top end of the first screw rod (1.5) is threadedly connected to a lifting seat (1.7), the top of the lifting seat (1.7) is fixedly connected to a lower support plate (1.8), an upper support plate (1.9) is provided above the lower support plate (1.8), both sides of the lower support plate (1.8) and the upper support plate (1.9) are fixedly connected to connecting seats (1.10), the two connecting seats (1.10) located on the same side are connected by a second screw rod (1.11), and both ends of the second screw rod (1.11) are provided with fastening bolts (1.12).

3. A shell and tube Teflon heat exchanger according to claim 2, characterized in that: The first screw rod (1.5) passes through the top wall of the fixing frame (1.3); the first screw rod (1.5) is rotatably connected to the top wall of the fixing frame (1.3) via a first bearing (1.13); and the bottom end of the first screw rod (1.5) is rotatably connected to the bottom wall of the fixing frame (1.3) via a second bearing (1.14).

4. A shell and tube Teflon heat exchanger according to claim 2, characterized in that: The bottom of the lifting seat (1.7) is provided with an internal thread groove that matches the first screw rod (1.5), the top of the fixing frame (1.3) is fixedly connected to two guide rods (1.15), and the bottom of the lifting seat (1.7) is provided with a guide groove that matches the guide rods (1.15).

5. The shell and tube Teflon heat exchanger according to claim 2, characterized in that: The lower support plate (1.8) and the upper support plate (1.9) are respectively located at the bottom and the top of the lower shell (3).

6. The shell and tube Teflon heat exchanger according to claim 1, characterized in that: A plurality of upper baffle plates (16) and lower baffle plates (17) are fixedly connected inside the upper shell (2) and the lower shell (3), and the upper baffle plates (16) and the lower baffle plates (17) are arranged at intervals.

7. The shell and tube Teflon heat exchanger according to claim 1, characterized in that: The heat exchange tube (14) is of U-shaped design.

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