Plate-fin heat exchanger drainage sealing strip

Abstract

A plate-fin heat exchanger liquid drainage sealing strip comprises a heat exchanger body, a plurality of partition plates distributed at equal intervals are connected to the interior of the heat exchanger body, fins are fixedly connected between the partition plates, sealing strips are fixedly connected to the peripheries of the fins, connecting holes are formed in the ends of the sealing strips, and the connecting holes penetrate through the side walls of the sealing strips. An exhaust groove is formed in the inner wall of the sealing strip, the exhaust groove penetrates through the inner wall of the sealing strip and extends into the connecting hole, an air pipe is connected into the connecting hole, and a plurality of exhaust holes distributed at equal intervals are formed in the outer wall of the air pipe. Hot nitrogen is conveyed into the fins through the air pipes to evaporate water in invalid areas, the water is prevented from freezing when the heat exchanger operates normally, expanded ice crystals may extrude the partition plates to affect the service life of the heat exchanger and even directly extrude the partition plates to cause leakage of the heat exchanger, and the air pipes are convenient to maintain and replace.

Description

Technical Field

[0001] This utility model relates to the field of plate-fin heat exchanger technology, and in particular to a drain seal for a plate-fin heat exchanger. Background Technology

[0002] In plate-fin heat exchangers, fins typically consist of a series of parallel metal plates, forming a series of channels between them. Fluid enters through one channel, exchanges heat through the fins between the plates, and then flows into the next channel, in a continuous cycle. However, due to design and manufacturing limitations, some channels within the fins may contain ineffective areas—regions where no fluid flows. These ineffective areas are usually isolated from the outside by surrounding seals. However, during pressure tests, it has been found that water can seep into these ineffective areas through gaps between seals or between seals and partitions. This water will freeze during normal operation, and the expanding ice crystals may compress the partitions, affecting the heat exchanger's lifespan, or even rupture the partitions, leading to leaks and serious consequences such as fluid crosstalk between different channels. Utility Model Content

[0003] This utility model provides a drain seal for a plate-fin heat exchanger, which aims to solve the problems mentioned in the background art.

[0004] A drain seal for a plate-fin heat exchanger includes a heat exchanger body. Several equally spaced partitions are connected inside the heat exchanger body. Fins are fixedly connected between the partitions. A seal is fixedly connected around the perimeter of each fin. A connection hole is provided at the end of the seal, penetrating the sidewall of the seal. An exhaust groove is provided on the inner wall of the seal, extending through the inner wall of the seal to the inside of the connection hole. An air pipe is connected inside the connection hole, and several equally spaced exhaust holes are provided on the outer wall of the air pipe.

[0005] As a preferred embodiment of the drain seal of the plate-fin heat exchanger described in this utility model, a fixing hole is provided on the left outer wall of the heat exchanger body, the fixing hole extends through the outer wall of the heat exchanger body to the interior, and a buffer ring is fixedly connected inside the fixing hole.

[0006] In a preferred embodiment of the drain seal for a plate-fin heat exchanger described in this utility model, both ends of the air pipe extend to the outside through the buffer ring, one end of the air pipe is an air inlet, and the other end of the air pipe is an air outlet.

[0007] As a preferred embodiment of the drain seal for a plate-fin heat exchanger described in this utility model, an air inlet pipe is fixedly connected to the left outer wall of the heat exchanger body, the air inlet pipe penetrates the outer wall of the heat exchanger body and extends into the interior, and an air outlet pipe is fixedly connected to the right outer wall of the heat exchanger body, the air outlet pipe penetrates the outer wall of the heat exchanger body and extends into the interior, and a flange is fixedly connected to the ends of the air outlet pipe and the air inlet pipe.

[0008] As a preferred embodiment of the drain seal of the plate-fin heat exchanger described in this utility model, a number of anti-slip pads are fixedly connected around the bottom of the heat exchanger body in an evenly distributed manner.

[0009] This utility model provides a drain seal for a plate-fin heat exchanger. It has the following beneficial effects:

[0010] Hot nitrogen is delivered to the inside of the fins through a gas pipe to evaporate the moisture in the ineffective area, preventing this water from freezing during normal operation of the heat exchanger. Expanding ice crystals may compress the baffles, affecting the service life of the heat exchanger, or even directly break the baffles, causing the heat exchanger to leak. The gas pipe facilitates maintenance and replacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a drain seal for a plate-fin heat exchanger according to the present invention;

[0012] Figure 2 This is a schematic diagram of the bottom side structure of a drain seal for a plate-fin heat exchanger according to the present invention.

[0013] Figure 3 This is a schematic diagram of the internal structure of a drain seal for a plate-fin heat exchanger according to the present invention.

[0014] Figure 4 This utility model relates to a drain seal for a plate-fin heat exchanger. Figure 1 A magnified structural diagram of part A;

[0015] Figure 5 This utility model relates to a drain seal for a plate-fin heat exchanger. Figure 3 A magnified structural diagram of part B.

[0016] In the diagram: 1. Heat exchanger body; 2. Baffle plate; 3. Air inlet; 4. Air inlet pipe; 5. Flange; 6. Air outlet pipe; 7. Anti-slip pad; 8. Air pipe; 9. Fins; 10. Seal; 11. Buffer ring; 12. Air outlet; 13. Fixing hole; 14. Exhaust groove; 15. Connection hole; 16. Exhaust hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0019] Please see Figure 1-5 A drain seal for a plate-fin heat exchanger includes a heat exchanger body 1. Several equally spaced baffles 2 are connected inside the heat exchanger body 1. Fins 9 are fixedly connected between the baffles 2. A seal 10 is fixedly connected around the perimeter of the fins 9. A connection hole 15 is provided at the end of the seal 10, penetrating the side wall of the seal 10. An exhaust groove 14 is provided on the inner wall of the seal 10, extending through the inner wall of the seal 10 to the interior of the connection hole 15. An air pipe 8 is connected inside the connection hole 15. Several equally spaced exhaust holes 16 are provided on the outer wall of the air pipe 8. Hot nitrogen is delivered through the air pipe 8 to the interior of the fins 9 to evaporate moisture in the ineffective areas, preventing this water from freezing during normal operation of the heat exchanger. Expanding ice crystals may compress the baffles, affecting the service life of the heat exchanger, or even directly rupture the baffles, leading to leaks. The air pipe 8 facilitates maintenance and replacement.

[0020] Please see Figure 1-4 A fixing hole 13 is provided on the left outer wall of the heat exchanger body 1. The fixing hole 13 extends through the outer wall of the heat exchanger body 1 and into the interior. A buffer ring 11 is fixedly connected inside the fixing hole 13. The buffer ring 11 can absorb and disperse the impact energy when a collision occurs, thereby reducing the degree of damage to the object. The buffer ring 11 can reduce the direct contact between objects, thereby reducing friction and vibration and protecting the surface of the object from damage.

[0021] Please see Figure 1-4 The two ends of the air pipe 8 extend to the outside through the buffer ring 11. One end of the air pipe 8 is the air inlet 3, and the other end is the air outlet 12. Hot nitrogen gas is delivered into the equipment through the air inlet 3 and then output through the air outlet 12 for recycling.

[0022] Please see Figure 1-2An air inlet pipe 4 is fixedly connected to the left outer wall of the heat exchanger body 1, penetrating the outer wall and extending into the interior. An air outlet pipe 6 is fixedly connected to the right outer wall of the heat exchanger body 1, penetrating the outer wall and extending into the interior. A flange 5 is fixedly connected to the ends of the air outlet pipe 6 and the air inlet pipe 4. The flange 5 is commonly used to connect two pipes, which can be of the same or different diameters. Connecting pipes in a piping system via the flange 5 allows for the connection of pipes. The flange 5 has extremely high sealing and pressure resistance, maintaining the sealing performance of pipe fittings and is suitable for high-pressure environments. The flange 5 can also reduce or eliminate vibration and noise between pipes or equipment.

[0023] Please see Figure 1-2 Several anti-slip pads 7 are fixedly connected around the bottom of the heat exchanger body 1 in an evenly spaced manner. The anti-slip pads 7 can prevent the equipment from sliding during use or transfer, increase the friction between the equipment and the contact surface, make the equipment more stable, reduce the risk of sliding and shaking, avoid accidental sliding or sliding noise, and the use of anti-slip pads 7 can greatly improve the stability and safety of the equipment and extend its service life.

[0024] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A drain seal for a plate-fin heat exchanger, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) is internally connected to several partitions (2) that are evenly distributed. Fins (9) are fixedly connected between the partitions (2). Seals (10) are fixedly connected around the fins (9). A connection hole (15) is provided at the end of the seal (10). The connection hole (15) penetrates the side wall of the seal (10). An exhaust groove (14) is provided on the inner wall of the seal (10). The exhaust groove (14) extends through the inner wall of the seal (10) to the inside of the connection hole (15). An air pipe (8) is connected inside the connection hole (15). Several exhaust holes (16) are provided on the outer wall of the air pipe (8) that are evenly distributed.

2. The drain seal for a plate-fin heat exchanger according to claim 1, characterized in that: The heat exchanger body (1) has a fixing hole (13) on its left outer wall. The fixing hole (13) extends through the outer wall of the heat exchanger body (1) to the inside. A buffer ring (11) is fixedly connected inside the fixing hole (13).

3. The drain seal for a plate-fin heat exchanger according to claim 2, characterized in that: The two ends of the air pipe (8) extend to the outside through the buffer ring (11). One end of the air pipe (8) is the air inlet (3), and the other end of the air pipe (8) is the air outlet (12).

4. The drain seal for a plate-fin heat exchanger according to claim 3, characterized in that: An air inlet pipe (4) is fixedly connected to the left outer wall of the heat exchanger body (1). The air inlet pipe (4) penetrates the outer wall of the heat exchanger body (1) and extends into the interior. An air outlet pipe (6) is fixedly connected to the right outer wall of the heat exchanger body (1). The air outlet pipe (6) penetrates the outer wall of the heat exchanger body (1) and extends into the interior. A flange (5) is fixedly connected to the end of the air outlet pipe (6) and the air inlet pipe (4).

5. The drain seal for a plate-fin heat exchanger according to claim 4, characterized in that: Several anti-slip pads (7) are fixedly connected around the bottom of the heat exchanger body (1) in an evenly distributed manner.

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