Heat exchanger of nitrogen-making rectifying tower

Abstract

The utility model provides a heat exchanger of a nitrogen-making rectifying tower, which relates to the field of heat exchangers, and comprises a box body and a heat exchange tube fixedly connected on the box body, the top of the box body is provided with a top cover, the outer edge of the top of the box body is fixedly connected with a mounting plate, and four corners of the mounting plate are fixedly connected with first permanent magnets; first permanent magnets are fixedly connected to the bottom of the top cover, second permanent magnets in one-to-one correspondence with the first permanent magnets are fixedly connected to the four corners of the top cover, the first permanent magnets and the second permanent magnets attract each other, a sealing plate matched with the box body is fixedly connected to the bottom of the top cover, and a sealing ring is fixedly connected to the outer side of the sealing plate. According to the heat exchanger of the nitrogen-making rectifying tower, through the arrangement of the top cover, the first permanent magnet and the second permanent magnet, when the interior needs to be cleaned, a user only needs to grasp a handle to pull out the top cover with force, at the moment, the heat exchange pipe and the inner wall of the box body are exposed, the heat exchange pipe and the box body can be conveniently cleaned, and the heat exchange efficiency is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a heat exchanger for a nitrogen distillation column. Background Technology

[0002] The working principle of a nitrogen distillation column is mainly based on air separation and distillation technology, utilizing the difference in boiling points between nitrogen and oxygen to achieve separation. One of the core components of the precooling system in a nitrogen distillation column is the heat exchanger. The heat exchanger lowers the temperature of the air entering the system by exchanging heat with a cold source (usually cold water or cold air). The design and materials of the heat exchanger directly affect the precooling effect; a high-efficiency heat exchanger can significantly improve the precooling effect of the air, ensuring the smooth progress of subsequent separation processes.

[0003] However, most of the heat exchangers in existing nitrogen distillation columns are single units, which makes it inconvenient to clean the inside of the heat exchanger. If not cleaned for a long time, the heat exchange efficiency will decrease and the use will be inconvenient. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a heat exchanger for a nitrogen distillation column, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heat exchanger for a nitrogen distillation column, comprising a housing and heat exchange tubes fixedly connected to the housing. A top cover is provided on the top of the housing, and an mounting plate is fixedly connected to the outer edge of the top of the housing. First permanent magnets are fixedly connected to the four corners of the mounting plate, and second permanent magnets, corresponding one-to-one with the first permanent magnets, are fixedly connected to the four corners of the top cover. The first and second permanent magnets are mutually attractive magnets. A sealing plate matching the housing is fixedly connected to the bottom of the top cover, and a sealing ring is fixedly connected to the outer side of the sealing plate. When the sealing plate is fully inserted into the housing, the first and second permanent magnets are in contact.

[0008] Preferably, a water inlet pipe is fixedly connected to the bottom of the box, and a water outlet pipe is fixedly connected to the top of the box.

[0009] Preferably, the length and width of the top cover are the same as those of the mounting plate.

[0010] Preferably, the top cover is fixedly connected to a handle, and the handle is fixedly connected to an anti-slip sleeve.

[0011] Preferably, there are two handles, and the two handles are symmetrically arranged on both sides of the center line of the top cover.

[0012] Preferably, the heat exchange tube is made of a thermally conductive material.

[0013] (III) Beneficial Effects

[0014] This invention provides a heat exchanger for a nitrogen production distillation column. It has the following beneficial effects:

[0015] 1. The heat exchanger of this nitrogen distillation column, through the setting of the top cover, the first permanent magnet and the second permanent magnet, when it is necessary to clean the inside, simply grasp the handle and pull the top cover outward with force. At this time, the heat exchange tubes and the inner wall of the box are exposed, which makes it easy to clean the heat exchange tubes and the box, ensuring heat exchange efficiency. Through the setting of the sealing plate, when the first permanent magnet and the second permanent magnet attract each other, the sealing plate will be inserted into the box. At the same time, the sealing ring will prevent the box from leaking, resulting in good performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ;

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 This is a side view of the top cover structure of this utility model;

[0020] Figure 5 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Box body, 2. Heat exchange tube, 3. Water inlet pipe, 4. Water outlet pipe, 5. Top cover, 6. Handle, 7. Second permanent magnet, 8. Mounting plate, 9. First permanent magnet, 10. Sealing plate, 11. Sealing ring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0023] This utility model embodiment provides a heat exchanger for a nitrogen production distillation column, such as... Figure 1-5As shown, the device includes a housing 1 and a heat exchange tube 2 fixedly connected to the housing 1. A top cover 5 is provided on the top of the housing 1. An mounting plate 8 is fixedly connected to the outer edge of the top of the housing 1. A first permanent magnet 9 is fixedly connected to each of the four corners of the mounting plate 8. A second permanent magnet 7, corresponding to the first permanent magnet 9, is fixedly connected to each of the four corners of the top cover 5. The first permanent magnet 9 and the second permanent magnet 7 are mutually attractive magnets. A sealing plate 10 matching the housing 1 is fixedly connected to the bottom of the top cover 5. A sealing ring 11 is fixedly connected to the outer side of the sealing plate 10. When the sealing plate 10 is fully inserted into the housing 1, the first permanent magnet 9 and the second permanent magnet 7 are in contact.

[0024] With the top cover 5, the first permanent magnet 9, and the second permanent magnet 7 in place, when cleaning the interior is required, simply grasp the handle 6 and pull the top cover 5 outwards. At this time, the heat exchange tube 2 and the inner wall of the box 1 are exposed, making it easy to clean the heat exchange tube 2 and the box 1, ensuring heat exchange efficiency. With the sealing plate 10 in place, when the first permanent magnet 9 and the second permanent magnet 7 attract each other, the sealing plate 10 will be inserted into the box 1. At the same time, the sealing ring 11 will prevent the box 1 from leaking, resulting in good performance.

[0025] A water inlet pipe 3 is fixedly connected to the bottom of the tank 1, and a water outlet pipe 4 is fixedly connected to the top of the tank 1.

[0026] The top cover 5 has the same length and width as the mounting plate 8.

[0027] The top cover 5 is externally fixedly connected to a handle 6, and an anti-slip sleeve is fixedly connected to the handle 6.

[0028] Two handles 6 are provided, and the two handles 6 are symmetrically arranged on both sides of the center line of the top cover 5.

[0029] The heat exchange tube 2 is made of a thermally conductive material.

[0030] Working principle: With the top cover 5, the first permanent magnet 9 and the second permanent magnet 7 in place, when cleaning is required, simply grasp the handle 6 and pull the top cover 5 outwards. At this time, the heat exchange tube 2 and the inner wall of the box 1 are exposed, making it easy to clean the heat exchange tube 2 and the box 1, ensuring heat exchange efficiency. With the sealing plate 10 in place, when the first permanent magnet 9 and the second permanent magnet 7 attract each other, the sealing plate 10 will be inserted into the box 1. At the same time, the sealing ring 11 will prevent the box 1 from leaking, resulting in good performance.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat exchanger for a nitrogen distillation column, comprising a housing (1) and heat exchange tubes (2) fixedly connected to the housing (1), characterized in that: The top of the box (1) is provided with a top cover (5). An installation plate (8) is fixedly connected to the outer edge of the top of the box (1). A first permanent magnet (9) is fixedly connected to each of the four corners of the installation plate (8). A second permanent magnet (7) corresponding to the first permanent magnet (9) is fixedly connected to each of the four corners of the top cover (5). The first permanent magnet (9) and the second permanent magnet (7) are mutually attractive magnets. A sealing plate (10) matching the box (1) is fixedly connected to the bottom of the top cover (5). A sealing ring (11) is fixedly connected to the outer side of the sealing plate (10). When the sealing plate (10) is fully inserted into the box (1), the first permanent magnet (9) and the second permanent magnet (7) are in contact.

2. The heat exchanger for a nitrogen distillation column according to claim 1, characterized in that: The bottom of the box (1) is fixedly connected to a water inlet pipe (3), and the top of the box (1) is fixedly connected to a water outlet pipe (4).

3. The heat exchanger for a nitrogen distillation column according to claim 2, characterized in that: The length and width of the top cover (5) are the same as those of the mounting plate (8).

4. The heat exchanger for a nitrogen distillation column according to claim 3, characterized in that: The top cover (5) is fixedly connected to a handle (6), and an anti-slip sleeve is fixedly connected to the handle (6).

5. The heat exchanger for a nitrogen distillation column according to claim 4, characterized in that: The handle (6) is set as two, and the two handles (6) are symmetrically arranged on both sides of the center line of the top cover (5).

6. The heat exchanger for a nitrogen distillation column according to claim 5, characterized in that: The heat exchange tube (2) is made of a thermally conductive material.

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