U-shaped tube bundle supporting structure of vertical heat exchange equipment

Abstract

The utility model relates to vertical heat exchange equipment in a PMVE project, in particular to a U-shaped tube bundle supporting structure of the vertical heat exchange equipment, which comprises a tube plate and a U-shaped tube bundle composed of a plurality of U-shaped tubes, and two ends of each U-shaped tube are connected with the tube plate. The device further comprises a supporting plate and a pull rod, the supporting plate comprises a connecting plate, an outer circle baffle and a plurality of grating plates, the grating plates are fixedly connected to the interior of the outer circle baffle, the grating plates are connected in a crossed and inserted mode, a plurality of spaces facilitating passing of media are defined in the outer circle baffle, and the pull rod and the U-shaped pipes penetrate through the different spaces respectively. Connecting plates are arranged on the upper face and the lower face of the space where the pull rod penetrates, one end of the pull rod is in threaded connection with the tube plate, the other end of the pull rod penetrates through through holes in the connecting plates on the upper face and the lower face, and the connecting plates are clamped and fixed through nuts in threaded connection with the other end of the pull rod. The utility model solves the problem that the U-shaped tube bundle is easy to fall off due to vibration caused by the gas medium scouring the U-shaped tube bundle, and the safety is well controlled while the U-shaped tube bundle is convenient to disassemble.

Description

Technical Field

[0001] This utility model relates to a vertical heat exchanger in a PMVE project, specifically a U-shaped tube bundle support structure for a vertical heat exchanger. Background Technology

[0002] PMVE (also known as trifluoromethyl trifluorovinyl ether) is an important perfluoroethylene ether specialty monomer, serving as a crucial raw material for the preparation of various high-end fluorinated materials, fluoroplastics, fluorinated pesticides, and fluorinated pharmaceuticals. PMVE possesses excellent comprehensive properties and is widely used in numerous fields, with chemical synthesis being its largest demand driver. PMVE can be used to prepare fluororubber and fluoroplastics, with polytetrafluoroethylene (PTFE) as its end product. PTFE boasts advantages such as high / low temperature resistance, corrosion resistance, non-toxicity, and good lubricity, offering broad application prospects in aerospace, textiles, and machinery manufacturing. As a chemical modifier, PMVE can effectively improve the weather resistance, gloss, and mechanical properties of PTFE. With the accelerated development of downstream industries, the market potential for PMVE will further expand. In PMVE projects, heat exchange equipment is a key component, leading to increasingly stringent requirements. As a crucial component of heat exchangers, the heat transfer efficiency and performance of U-tube bundles directly impact the overall efficiency of the equipment. Since the heat exchange medium enters from the bottom and directly covers the entire U-tube bundle, and the medium is gaseous, direct scouring of the U-tube bundle easily generates vibrations, causing the tubes to detach, affecting equipment operation and reducing overall efficiency. Therefore, designing a U-tube bundle support structure that restricts vibration, prevents detachment, and is easily removable is of paramount importance. Utility Model Content

[0003] To address the problem of U-tube bundles vibrating and falling off due to direct scouring by the heat exchange medium, this utility model aims to provide a U-tube bundle support structure for vertical heat exchange equipment.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model includes a tube sheet and a U-shaped tube bundle composed of multiple U-shaped tubes, with both ends of each U-shaped tube connected to the tube sheet; it also includes a support plate and a tie rod. The support plate includes a connecting plate, an outer circular baffle, and multiple grid plates, all of which are fixedly connected to the inside of the outer circular baffle. The grid plates are interlocked with each other, forming multiple spaces inside the outer circular baffle to facilitate the passage of the medium. The tie rod and each U-shaped tube pass through different spaces. Connecting plates are provided on the upper and lower surfaces of the spaces through which the tie rod passes. The connecting plates on the upper and lower surfaces are fixedly connected to the grid plates forming the spaces, and the connecting plates have through holes for the tie rod to pass through. One end of the tie rod is threaded to the tube sheet, and the other end of the tie rod passes through the through holes on the upper and lower connecting plates. The connecting plates are clamped and fixed by nuts threaded to the other end of the tie rod.

[0006] Wherein: the upper part of the grating plate has multiple slots along the length direction, each slot is opened from the top surface of the grating plate along the height direction, and adjacent grating plates are fixed by inserting the slots.

[0007] The other end of the pull rod is threaded with nuts above the upper connecting plate and below the lower connecting plate.

[0008] The outer circular baffle is provided with a partition for dividing the tube into two parts. The partition divides the outer circular baffle into two parts of the same size. Each part is provided with multiple grid plates. The two ends of the grid plates in each part are fixed to the inner wall of the outer circular baffle, or one end is fixed to the inner wall of the outer circular baffle and the other end is fixed to the partition plate.

[0009] The outer circular baffle is a ring with a height.

[0010] The advantages and positive effects of this utility model are as follows:

[0011] 1. In order to prevent the U-shaped tube bundle from vibrating, this utility model provides a support plate structure to limit the vibration space of the U-shaped tube bundle and prevent the U-shaped tube bundle from falling off.

[0012] 2. In order not to affect the normal entry of the medium into the heat exchange equipment, the support plate of this utility model is provided with cross-interlocking grid plates inside the outer circular baffle. The space between the grid plates facilitates the passage of the medium for heat exchange.

[0013] 3. In order to facilitate disassembly, the grid plates of this utility model are not welded together, but fixed by slots. Subsequent maintenance and replacement can be done by direct disassembly, which is simple to operate. Attached Figure Description

[0014] Figure 1 This is a front view of the structure of this utility model;

[0015] Figure 2for Figure 1 Top view of the middle support plate;

[0016] Figure 3 This is a schematic diagram of the connection between the tie rod and the connecting plate of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection between the tie rod and the tube sheet of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the grating plate of this utility model;

[0019] Wherein: 1 is tube sheet, 2 is U-shaped tube bundle, 3 is support plate, 4 is tie rod, 5 is nut, 6 is connecting plate, 7 is grid plate, 8 is outer circular baffle, 9 is partition plate, and 10 is slot. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figures 1-5 As shown, this utility model includes a tube sheet 1, a support plate 3, a tie rod 4, a nut 5, and a U-shaped tube bundle 2 composed of multiple U-shaped tubes, with both ends of each U-shaped tube connected to the tube sheet 1.

[0022] The support plate 3 in this embodiment includes a connecting plate 6, an outer circular baffle 8, and multiple grid plates 7. The outer circular baffle 8 is a circular ring with a height. The multiple grid plates 7 are fixed inside the outer circular baffle 8 and are interlocked with each other, forming multiple spaces inside the outer circular baffle 8 to facilitate the passage of the medium. The pull rod 4 and each U-shaped tube pass through different spaces. The connecting plate 6 is provided on the upper and lower surfaces of the space through which the pull rod 4 passes. The connecting plate 6 on the upper and lower surfaces is welded to the grid plates 7 that form the space, and the connecting plate 6 has through holes for the pull rod 4 to pass through. One end of the pull rod 4 is threaded to the tube plate 1, and the other end of the pull rod 4 passes through the through holes on the upper and lower connecting plates 6. The connecting plate 6 is clamped and fixed by a nut 5 that is threaded to the other end of the pull rod 4.

[0023] There are at least four tie rods 4. In this embodiment, there are four tie rods. Threaded holes are provided on the tube plate 1 corresponding to the position of each tie rod 4. One end of each tie rod 4 is threadedly connected to the corresponding threaded hole.

[0024] In this embodiment, the outer circular baffle 8 is provided with a partition 9 for dividing the tube into two parts. The partition 9 divides the outer circular baffle 8 into two parts of the same size. Each part is provided with multiple grid plates 7. The two ends of the grid plates 7 in each part are welded to the inner wall of the outer circular baffle 8, or one end is welded to the inner wall of the outer circular baffle 8 and the other end is welded to the partition 9.

[0025] In this embodiment, the upper part of the grating plate 7 is provided with a plurality of slots 10 along the length direction. Each slot 10 is opened from the top surface of the grating plate 7 along the height direction, and adjacent grating plates 7 are fixed by insertion through the slots 10.

[0026] In this embodiment, the other end of the pull rod 4 is threaded with nuts 5 above the upper connecting plate 6 and below the lower connecting plate 6. The nuts 5 are fastened to the connecting plates 6 at the corresponding positions to limit the vibration space of the U-shaped tube bundle and prevent the U-shaped tube bundle from falling off.

[0027] In this embodiment, the grid plates 8 that are interlocked are spaced apart to form a space for the U-shaped tube and tie rod 4 to pass through. The grid plates 8 are not welded together but fixed by slots 10, which facilitates the flow of media and makes them easy to disassemble.

[0028] During installation, the U-shaped tube bundle 2 and tie rod 4 are passed through the support plate 3 and connected to the tube sheet 1. After assembly, the entire assembly is placed into the shell of the heat exchanger.

[0029] This invention solves the problem of easy detachment caused by vibration when the U-shaped tube bundle is washed by gas medium, making it easy to disassemble while also ensuring good safety control.

Claims

1. A U-shaped tube bundle support structure for a vertical heat exchanger, comprising a tube sheet (1) and a U-shaped tube bundle (2) composed of multiple U-shaped tubes, wherein both ends of each U-shaped tube are connected to the tube sheet (1); characterized in that: It also includes a support plate (3) and a pull rod (4). The support plate (3) includes a connecting plate (6), an outer circular baffle (8), and multiple grid plates (7). The multiple grid plates (7) are all fixed inside the outer circular baffle (8). The grid plates (7) are interlocked with each other and form multiple spaces inside the outer circular baffle (8) to facilitate the passage of the medium. The pull rod (4) and each U-shaped tube pass through different spaces. The upper and lower surfaces of the space through which the pull rod (4) passes are provided with connecting plates (6). The connecting plates (6) on the upper and lower surfaces are fixed to the grid plates (7) that form the space. The connecting plates (6) are provided with through holes for the pull rod (4) to pass through. One end of the pull rod (4) is threaded to the tube plate (1). The other end of the pull rod (4) passes through the through holes on the connecting plates (6) on the upper and lower surfaces. The connecting plates (6) are clamped and fixed by nuts (5) that are threaded to the other end of the pull rod (4).

2. The U-shaped tube bundle support structure of the vertical heat exchanger according to claim 1, characterized in that: The upper part of the grating plate (7) is provided with a plurality of slots (10) along the length direction. Each slot (10) is opened from the top surface of the grating plate (7) along the height direction. Adjacent grating plates (7) are fixed together by inserting the slots (10).

3. The U-shaped tube bundle support structure of the vertical heat exchanger according to claim 1, characterized in that: The other end of the pull rod (4) is threaded with nuts (5) above the upper connecting plate (6) and below the lower connecting plate (6).

4. The U-shaped tube bundle support structure of the vertical heat exchanger according to claim 1, characterized in that: The outer circular baffle (8) is provided with a partition (9) inside to divide the tube into two parts. The partition (9) divides the outer circular baffle (8) into two parts of the same size. Each part is provided with multiple grid plates (7). The two ends of the grid plates (7) in each part are fixed to the inner wall of the outer circular baffle (8), or one end is fixed to the inner wall of the outer circular baffle (8) and the other end is fixed to the partition (9).

5. The U-shaped tube bundle support structure of the vertical heat exchanger according to claim 1, characterized in that: The outer circular baffle (8) is a ring with height.

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