Novel anti-vibration reboiler

Abstract

The utility model relates to a novel anti-vibration reboiler, and belongs to the field of tubular reboiler structures. Comprising a reboiler, one end of a tube bundle in the reboiler is connected with a fixed tube plate, the other end of the tube bundle is connected with a floating tube plate, an arc-shaped notch is formed in the top of a baffle plate in the reboiler, reinforcing rib plates are arranged at the two ends of the tube bundle in the reboiler, and the two ends of the tube bundle penetrate through the reinforcing rib plates to be connected with the fixed tube plate and the floating tube plate respectively. The reboiler is simple in structure, vibration of the heat exchange tubes at the top of the tube bundle is reduced, and the service life of the reboiler is prolonged.

Description

Technical Field

[0001] The utility model relates to a novel anti-vibration reboiler, belonging to the field of tube-in-tube reboiler structures. Background Art

[0002] The shell-and-tube reboiler is a widely used equipment in the oil refining and chemical industry. Its service life directly affects the manufacturing cost of the entire device. The tube bundle is an important component of the reboiler and undertakes the main function of heat exchange. At present, when the top gas phase medium flows through the heat exchange tube during the operation of the reboiler, it will induce the vibration of the tube bundle, causing the heat exchange tube to wear and cause leakage.

[0003] A Chinese patent (publication number CN202516335U) discloses a reboiler for preventing tube bundle vibration, the reboiler for preventing tube bundle vibration comprises a reboiler, characterized in that a support ring is provided at the shell outlet of the reboiler, and an anti-shock pipe is provided at the shell inlet. The utility model has a simple structure, does not increase the shell pressure drop, can effectively avoid vibration damage to the heat exchange tube, ensures the normal operation of the reboiler, and increases the service life of the reboiler.

[0004] The problem with the above patent is that only a support ring is provided at the shell outlet and an anti-impact pipe is provided at the shell inlet to avoid vibration of the heat exchange tube. However, the middle part of the heat exchange tube will still vibrate due to the flow of gas phase medium, resulting in poor anti-vibration effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a novel anti-vibration reboiler with a simple structure, which reduces the vibration of the heat exchange tubes at the top of the tube bundle and prolongs the service life of the reboiler.

[0006] The utility model discloses a novel anti-vibration reboiler, comprising a reboiler, wherein one end of a tube bundle in the reboiler is connected to a fixed tube sheet, and the other end of the tube bundle is connected to a floating tube sheet. An arc-shaped notch is provided on the top of a baffle in the reboiler. Reinforcement rib plates are arranged at both ends of the tube bundle in the reboiler. Both ends of the tube bundle penetrate the reinforcement rib plates and are respectively connected to the fixed tube sheet and the floating tube sheet.

[0007] By opening an arc-shaped notch at the top of the baffle, the gas flow area at the top is increased, so that the gas flow is smoother and the vibration caused by the gas flow is reduced. At the same time, reinforcing ribs are set at both ends of the tube bundle to restrain the tube bundle and reduce the vibration of the tube bundle.

[0008] A guide arc plate is arranged on the top of the tube bundle, and the guide arc plate is overlapped in the arc-shaped notch opened on the top of the baffle plate, and both ends of the guide arc plate are fixed by reinforcing rib plates. By arranging the guide arc plate on the top of the tube bundle, the tube bundle is further constrained and the vibration of the tube bundle is reduced.

[0009] The shape of the guide arc plate is adapted to the shape of the arc-shaped notch opened on the top of the baffle plate. If there is a gap between the guide arc plate and the baffle plate, part of the gas phase will flow through the gap, causing fluctuations in the gas phase flow. By fitting the guide arc plate to the top of the baffle plate, fluctuations in the gas phase flow can be avoided, ensuring smoother gas phase circulation.

[0010] The material of the reinforcing rib plate is metal.

[0011] The side wall of the guide arc plate is evenly distributed with a plurality of holes along the length direction. By arranging the holes on the side wall of the guide arc plate, the gas phase enters the space at the top of the baffle plate from the holes, and no longer needs to enter from the top of the baffle plate. The flow of the gas phase medium at the top is changed from circumferential flow to lateral flow, which reduces the vibration of the heat exchange tube at the top of the tube bundle and increases the service life of the reboiler.

[0012] The guide arc plate is made of metal.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The utility model increases the gas flow area at the top by opening an arc-shaped notch at the top of the baffle, thereby making the gas flow smoother and reducing the vibration caused by the gas flow. At the same time, reinforcing ribs are arranged at both ends of the tube bundle to constrain the tube bundle and reduce the vibration of the tube bundle.

[0015] (2) A guide arc plate is set on the top of the tube bundle. The guide arc plate is overlapped in the arc-shaped notch opened on the top of the baffle plate. Both ends of the guide arc plate are fixed by reinforcing rib plates. By setting the guide arc plate on the top of the tube bundle, the tube bundle is further constrained and the vibration of the tube bundle is reduced.

[0016] (3) Several holes are evenly distributed along the length of the side wall of the guide arc plate. By setting holes on the side wall of the guide arc plate, the gas phase enters the space at the top of the baffle plate from the holes, and no longer needs to enter from the top of the baffle plate. The flow of the gas phase medium at the top is changed from circumferential flow to lateral flow, which reduces the vibration of the heat exchange tube at the top of the tube bundle and increases the service life of the reboiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of the present utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0019] In the figure: 1. Fixed tube sheet; 2. Reinforcement rib plate; 3. Guide arc plate; 4. Strip hole; 5. Tube bundle; 6. Baffle; 7. Floating tube sheet; 8. Arc notch. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with embodiments:

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown, a novel anti-vibration reboiler described in the utility model comprises a reboiler, one end of a tube bundle 5 in the reboiler is connected to a fixed tube sheet 1, and the other end of the tube bundle 5 is connected to a floating tube sheet 7. An arc-shaped notch 8 is provided on the top of a baffle 6 in the reboiler, and reinforcing rib plates 2 are arranged at both ends of the tube bundle 5 in the reboiler, and the reinforcing rib plates 2 are respectively welded to the fixed tube sheet 1 and the floating tube sheet 7, and both ends of the tube bundle 5 penetrate the reinforcing rib plates 2 and are respectively connected to the fixed tube sheet 1 and the floating tube sheet 7.

[0023] By opening an arc-shaped notch 8 at the top of the baffle 6, the gas flow area at the top is increased, so that the gas flow is smoother and the vibration caused by the gas flow is reduced. At the same time, reinforcing rib plates 2 are arranged at both ends of the tube bundle 5 to constrain the tube bundle 5 and reduce the vibration of the tube bundle 5.

[0024] A guide arc plate 3 is arranged on the top of the tube bundle 5, and the guide arc plate 3 is overlapped in the arc-shaped notch 8 opened on the top of the baffle plate 6. Both ends of the guide arc plate 3 are fixed by the reinforcing rib plate 2, and the guide arc plate 3 is welded to the baffle plate 6 and the reinforcing rib plate 2. By arranging the guide arc plate 3 on the top of the tube bundle 5, the tube bundle 5 is further constrained, and the vibration of the tube bundle 5 is reduced.

[0025] The shape of the guide arc plate 3 is adapted to the shape of the arc-shaped notch 8 opened on the top of the baffle plate 6. If there is a gap between the guide arc plate 3 and the baffle plate 6, part of the gas phase will flow through the gap, causing fluctuations in the gas phase flow. By fitting the guide arc plate 3 to the top of the baffle plate 6, fluctuations in the gas phase flow can be avoided, ensuring smoother gas flow.

[0026] The material of the reinforcing rib plate 2 is metal.

[0027] The side wall of the guide arc plate 3 is evenly distributed with a plurality of strip holes 4 along the length direction. By setting the strip holes 4 on the side wall of the guide arc plate 3, the gas phase enters the space at the top of the baffle plate 6 from the strip holes 4, and no longer needs to enter from the top of the baffle plate 6. The flow of the gas phase medium at the top is changed from circumferential flow to lateral flow, which reduces the vibration of the heat exchange tube at the top of the tube bundle 5 and increases the service life of the reboiler.

[0028] The guide arc plate 3 is made of metal.

[0029] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A novel anti-vibration reboiler, comprising a reboiler, wherein one end of a tube bundle (5) in the reboiler is connected to a fixed tube sheet (1), and the other end of the tube bundle (5) is connected to a floating tube sheet (7), characterized in that: An arc-shaped notch (8) is provided at the top of a baffle (6) in the reboiler, reinforcing rib plates (2) are arranged at both ends of a tube bundle (5) in the reboiler, and both ends of the tube bundle (5) penetrate the reinforcing rib plates (2) and are respectively connected to a fixed tube sheet (1) and a floating tube sheet (7).

2. The novel anti-vibration reboiler according to claim 1 is characterized in that: A guide arc plate (3) is arranged on the top of the tube bundle (5). The guide arc plate (3) is overlapped in an arc-shaped notch (8) opened on the top of the baffle plate (6). Both ends of the guide arc plate (3) are fixed by reinforcing rib plates (2).

3. The novel anti-vibration reboiler according to claim 2 is characterized in that: The shape of the guide arc plate (3) is adapted to the shape of the arc-shaped notch (8) provided on the top of the baffle plate (6).

4. The novel anti-vibration reboiler according to claim 3 is characterized in that: The material of the reinforcing rib plate (2) is metal.

5. The novel anti-vibration reboiler according to any one of claims 1 to 4, characterized in that: A plurality of holes (4) are evenly distributed on the side wall of the guide arc plate (3) along the length direction.

6. The novel anti-vibration reboiler according to claim 5 is characterized in that: The guide arc plate (3) is made of metal.

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