Heat insulation sealing device of heat exchanger and superheated steam heat exchanger

Abstract

The utility model provides a heat exchanger heat insulation sealing device and a superheated steam heat exchanger, and belongs to the technical field of heat exchanger equipment. The problems that the pipe diameter of a steam shielding plate of an existing heat exchanger is larger than the outer diameter of a heat exchange pipe, steam leaks to the outer side due to gaps between the steam shielding plate and the heat exchange pipe and is mixed with steam at a steam outlet, and the temperature of the steam outlet is too high to affect the performance index of the heat exchanger are solved. The heat exchanger steam shielding device comprises a steam shielding plate, partition plates and a cladding, one end of the steam shielding plate is connected with a tube plate of a heat exchanger through the cladding, the other end of the steam shielding plate is connected with a shell of the heat exchanger, the two partition plates are arranged between the cladding and arranged in a staggered mode, the thickness of the steam shielding plate is 30 mm, the steam shielding plate is semicircular, and the radius of the steam shielding plate is 5 mm smaller than that of a barrel of the heat exchanger. And a semi-arched through hole consistent with the inner wall of the cladding in size is formed in the center of the steam shielding plate. The steam outlet of the steam heat exchanger is mainly prevented from being too high in temperature.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger equipment, in particular to a heat insulation sealing device for a heat exchanger and a superheated steam heat exchanger. Background Art

[0002] U-tube heat exchanger is a process equipment widely used in chemical, petroleum, light industry, energy and other industries. It is suitable for different types of media such as high temperature and high pressure. For heat exchangers whose shell side medium is superheated steam, in order to improve heat exchange efficiency and protect the equipment shell, a cladding is generally set outside the heat exchange tube bundle inside the shell. The superheated steam is baffled in the cladding to achieve heat exchange with the fluid in the heat exchange tube through the baffle.

[0003] For U-tube heat exchangers, a steam shield is usually set at the front end of the cladding to achieve sealing of the cladding. In order to ensure smooth tube insertion, the tube hole diameter of the steam shield is usually about 0.3mm larger than the outer diameter of the heat exchange tube. This 0.3mm gap will cause steam to leak to the outside of the cladding and mix with the steam at the steam outlet, causing the steam outlet temperature to be too high, affecting the performance indicators of the heat exchanger. Utility Model Content

[0004] In view of this, the utility model aims to propose a heat exchanger insulation sealing device and a superheated steam heat exchanger to solve the problem that the diameter of the existing heat exchanger steam shield is larger than the outer diameter of the heat exchange tube, and the gap between them will cause steam to leak to the outside and mix with the steam at the steam outlet, causing the steam outlet temperature to be too high and affecting the performance indicators of the heat exchanger.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heat exchanger insulation and sealing device comprises a steam shielding plate, a partition and a cladding, wherein one end of the steam shielding plate is connected to the tube sheet of the heat exchanger through the cladding, and the other end is connected to the overheating section cladding of the heat exchanger, and two partitions are arranged between the claddings, and the two partitions are arranged alternately.

[0007] Furthermore, the steam shielding plate has a thickness of 30 mm and is semicircular, and a radius of the steam shielding plate is 5 mm smaller than a radius of a cylinder of the heat exchanger.

[0008] Furthermore, a semi-arcuate through hole having the same size as the inner wall of the enclosure is provided at the center of the steam shield.

[0009] Furthermore, the thickness of the cladding is 8 mm, and the width is consistent with the distance from the tube sheet to the steam shielding plate.

[0010] Furthermore, the thickness of the partition is 30 mm, and the width and height are 2 mm smaller than the inner diameter of the cladding.

[0011] Furthermore, corresponding tube holes are arranged on the partition according to the heat exchange tube arrangement method of the heat exchanger.

[0012] Furthermore, a superheated steam heat exchanger includes a heat exchanger insulation sealing device.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model connects one end of the steam shielding plate to the tube sheet of the heat exchanger through the cladding, and the other end is connected to the outer shell of the heat exchanger. Two partitions are arranged between the claddings. The two partitions are staggered to form left and right deflection channels to achieve a low flow resistance effect. One end of the steam shielding plate is connected to the tube sheet of the heat exchanger through the cladding to form a seal, which can ensure the sealing of the steam shielding plate, prevent steam from flowing out of the gap between the steam shielding plate and the heat exchange tube, causing the steam outlet temperature to be too high, and improve the performance indicators of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0015] Figure 1 The structure of a heat exchanger insulation sealing device according to the utility model is shown in FIG. Figure 1 ;

[0016] Figure 2 The structure of a heat exchanger insulation sealing device according to the utility model is shown in FIG. Figure 2 .

[0017] 1-steam shield, 2-partition, 3-cladding. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely explain the technical solutions in the embodiments of the utility model. It should be noted that the embodiments and features in the embodiments of the utility model can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0019] See also Figure 1-2 To illustrate the present embodiment, a heat insulation and sealing device for a heat exchanger includes a steam shielding plate 1, a partition 2 and a cladding 3, wherein one end of the steam shielding plate 1 is connected to the tube sheet of the heat exchanger through the cladding 3, and the other end is connected to the outer shell of the heat exchanger, and two partitions 2 are arranged between the cladding 3, and the two partitions 2 are arranged alternately.

[0020] The steam shielding plate 1 has a thickness of 30 mm and is semicircular in shape. The radius of the steam shielding plate 1 is 5 mm smaller than the radius of the cylinder of the heat exchanger.

[0021] A semi-arcuate through hole having the same size as the inner wall of the cladding 3 is provided at the center of the steam shielding plate 1 to ensure the sealing between the steam shielding plate 1 and the cladding 3 .

[0022] The cladding 3 has a thickness of 8 mm and a width consistent with the distance from the tube sheet to the steam shielding plate 1 .

[0023] The thickness of the partition plate 2 is 30 mm, and the width and height are 2 mm smaller than the inner diameter of the cladding 3 .

[0024] The partition plate 2 is provided with corresponding tube holes according to the heat exchange tube arrangement method of the heat exchanger.

[0025] One end of the steam shielding plate 1 in the device is connected to the tube sheet of the heat exchanger through the cladding 3, which can achieve a sealing effect and prevent steam from entering the outside through the gap between the steam shielding plate 1 and the heat exchange tube and mixing with the steam at the steam outlet, causing the steam outlet temperature to be too high and affecting the performance indicators of the heat exchanger. Therefore, this connection method can improve the performance indicators of the heat exchanger. Then, two partitions 2 are provided in the two claddings 3 of the device. The two partitions 2 are staggered to form left and right deflection channels, which can guide the fluid inside the heat exchanger and form different flow paths between the tube bundles, thereby increasing the effective heat exchange surface area, improving the heat exchange efficiency of the heat exchanger, and helping to guide the fluid to be evenly distributed inside the heat exchanger to enhance the heat exchange effect.

[0026] The embodiments of the utility model disclosed above are only used to help explain the utility model. The embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A heat exchanger insulation sealing device, characterized in that: The invention comprises a steam shielding plate (1), a partition plate (2) and a cladding (3); one end of the steam shielding plate (1) is connected to a tube sheet of a heat exchanger through the cladding (3), and the other end is connected to an overheating section cladding of the heat exchanger; two partition plates (2) are arranged in the cladding (3), and the two partition plates (2) are arranged in a staggered manner.

2. A heat exchanger insulation sealing device according to claim 1, characterized in that: The steam shielding plate (1) has a thickness of 30 mm and is semicircular in shape; the outer radius of the steam shielding plate (1) is 5 mm smaller than the radius of the cylinder of the heat exchanger.

3. A heat exchanger insulation sealing device according to claim 2, characterized in that: A semi-arcuate through hole having the same size as the inner wall of the enclosure (3) is provided at the center of the steam shield (1).

4. A heat exchanger insulation sealing device according to claim 1, characterized in that: The cladding (3) has a thickness of 8 mm and a width consistent with the distance from the tube sheet to the steam shielding plate (1).

5. The heat insulation sealing device for a heat exchanger according to claim 1, characterized in that: The thickness of the partition (2) is 30 mm, and its width and height are 2 mm smaller than the inner diameter of the cladding (3).

6. A heat exchanger insulation sealing device according to claim 5, characterized in that: Corresponding tube holes are arranged on the partition plate (2) according to the heat exchange tube arrangement method of the heat exchanger.

7. A superheated steam heat exchanger, characterized in that: The heat exchanger thermal insulation sealing device comprises the heat exchanger thermal insulation sealing device according to any one of claims 1 to 6.

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