High-pressure heater u-tube anti-vibration support fixing member

Abstract

The utility model provides a kind of high-pressure heater U-shaped tube anti-vibration support fixing component, it is related to high-pressure heater U-shaped tube support technical field, and it includes: U-shaped tube body, U-shaped tube body pipe head is connected with tube sheet, U-shaped tube body pipe surface is inserted and is connected with baffle and is distributed, the baffle pipe hole wall is symmetrically fixed with outer fixed half ring by screwing, the inner side ring surface of outer fixed half ring is bonded with elastic support lining ring, the inner side end of elastic support lining ring is connected with PEEK inner fixed half ring, ACF buffer pillar is provided in the inner side of elastic support lining ring, and ACF buffer pillar is supported at the interval between outer fixed half ring and PEEK inner fixed half ring. The utility model solves the problem that the contact part of U-shaped tube and two rigid fixed baffle grids in the prior art is prone to micro-amplitude relative motion, which causes pipe wall wear and tear and abrasion.

Description

Technical Field

[0001] This utility model relates to the field of U-tube support technology for high-pressure heaters, and specifically to a vibration-proof support and fixing component for a U-tube of a high-pressure heater. Background Technology

[0002] The U-tube in a high-pressure heater is a key component of the heat exchange equipment. Made of metal tubing (such as stainless steel, titanium alloy, or carbon steel), it features a bent design with both ends fixed to the same tube sheet. To ensure the safe, reliable, and long-term operation of the U-tube, supporting and fixing components are installed to prevent excessive vibration. A search revealed existing technology (publication number: CN202420121174.2) for the vibration-resistant support structure of the baffle plate in a shell-and-tube heat exchanger. The document describes that "after the upper and lower baffle plates are brought together, two adjacent left baffle rods and two adjacent right baffle rods form a rhombus shape, and the baffle plate tie rod..." The left deflector rod in the upper deflector grid and the right deflector rod in the lower deflector grid are arranged at a certain rotation angle within the rhombus, forming a snap-fit ​​connection that rotates and engages with the deflector plate tie rod passing through it. This serves to fix the deflector grid to the deflector plate tie rod and also to flexibly absorb the vibration of the deflector grid. The intersection of the left and right deflector rods is spot-welded together to form a spot weld, which further fixes the two deflector grids together. However, in the prior art, the contact part between the U-shaped tube and the rigidly fixed two deflector grids is prone to slight relative movement, leading to wear and tear of the tube wall. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a vibration-damping support and fixing component for a high-pressure heater U-tube is provided to solve the problem that the contact part between the U-tube and the rigidly fixed two baffles is prone to slight relative movement, leading to wear and tear of the tube wall.

[0004] To achieve the above objectives, a vibration-damping support and fixing component for a high-pressure heater U-shaped tube is provided, comprising: a U-shaped tube body, wherein a tube sheet is connected to the tube head of the U-shaped tube body.

[0005] The U-shaped tube body has baffles inserted into its surface. Each baffle is symmetrically fixed with an outer fixing half-ring screwed into the inner wall of the tube hole. An elastic support bushing is bonded to the inner surface of the outer fixing half-ring. A PEEK inner fixing half-ring is connected to the inner end of the elastic support bushing. An ACF buffer support is provided inside the elastic support bushing. The ACF buffer support is located at the distance between the outer fixing half-ring and the PEEK inner fixing half-ring.

[0006] Furthermore, a high-pressure heater housing is fixedly connected to the side end of the tube sheet, and the U-shaped tube and the baffle are both assembled inside the high-pressure heater housing.

[0007] Furthermore, the PEEK inner fixing half-ring is symmetrically pressed and wrapped around the outer surface of the U-shaped tube.

[0008] Furthermore, a fixing block is welded to the outer end of the outer fixed semi-ring, and the fixing block is fixed to the surface of the baffle plate by studs.

[0009] Furthermore, the outer ring surface of the elastic support ring is provided with a fluid channel, which is wide at both ends and narrow in the middle.

[0010] Furthermore, the fluid channels and ACF buffer pillars are arranged in an adjacent, circumferential pattern at the outer end of the PEEK inner fixed semi-ring.

[0011] Furthermore, the ACF buffer strut is adhesively embedded in the elastic support bushing.

[0012] The beneficial effects of this utility model are as follows: the vibration-damping support and fixing component of the high-pressure heater U-shaped tube utilizes an outer fixed half-ring, a PEEK inner fixed half-ring, an elastic support bushing, and an ACF buffer column to form a vibration-damping component. The outer fixed half-ring and the PEEK inner fixed half-ring are distributed and supported and fixed to the baffle plate and the U-shaped tube surface, so that the elastic support bushing and the ACF buffer column located around the support end of the U-shaped tube provide damping and shock absorption, effectively absorbing and dissipating the vibration energy generated by the micro-amplitude relative motion, greatly reducing the wear of the U-shaped tube by the vibration-damping support and fixing component, ensuring the durability and stability of the vibration-damping support and fixing component, and improving the vibration-damping performance of the U-shaped tube support and fixing component. Attached Figure Description

[0013] Figure 1 This is a front view of the vibration-damping support and fixing component of the U-shaped tube of the high-pressure heater according to an embodiment of the present invention.

[0014] Figure 2 This is a partial cross-sectional structural diagram of the vibration-damping support and fixing component of the high-pressure heater U-shaped tube according to an embodiment of the present invention.

[0015] Figure 3 This is a side view of the U-shaped tube vibration damping component according to an embodiment of the present invention.

[0016] Figure 4 This is a side view cross-sectional structural diagram of the vibration-damping component according to an embodiment of the present invention.

[0017] In the figure: 1. U-shaped tube body; 2. Baffle plate; 3. High-pressure heater shell; 31. Tube sheet; 4. External fixed half ring; 41. Elastic support bushing; 42. Fluid channel; 43. Fixing block; 44. ACF buffer support; 5. PEEK internal fixed half ring. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, this utility model provides a vibration-damping support and fixing component for a U-shaped tube of a high-pressure heater, comprising: a U-shaped tube body 1, with a tube plate 31 connected to the tube head of the U-shaped tube body 1.

[0019] The U-shaped tube body 1 has baffles 2 inserted into its surface. The baffles 2 are symmetrically fixed with an outer fixing half-ring 4 screwed into the inner wall of the tube hole. An elastic support bushing 41 is bonded to the inner ring surface of the outer fixing half-ring 4. A PEEK inner fixing half-ring 5 is connected to the inner end of the elastic support bushing 41. An ACF buffer support column 44 is provided inside the elastic support bushing 41. The ACF buffer support column 44 is located at the distance between the outer fixing half-ring 4 and the PEEK inner fixing half-ring 5.

[0020] In use, the outer fixed half-ring 4 is screwed and installed at the pipe wall of the baffle 2. The inner fixed half-ring 5 of PEEK, which is connected to the inner side of the outer fixed half-ring 4 by the elastic support bushing 41 and the ACF buffer column 44, is pressed and wrapped around the surface of the U-shaped tube 1. Then, the U-shaped tube 1 and the baffle 2 are assembled into the high-pressure heater housing 3. When the high-pressure heater is running, when a slight relative movement occurs at the connection between the U-shaped tube 1 and the baffle 2, the ACF buffer column 44 and the elastic support bushing 41 between the outer fixed half-ring 4 and the PEEK inner fixed half-ring 5 absorb and dissipate the vibration energy generated by the slight relative movement, thereby greatly reducing the wear of the anti-vibration support fixing components on the U-shaped tube 1.

[0021] In this embodiment, a high-pressure heater housing 3 is fixedly connected to the side end of the tube sheet 31, and the U-shaped tube 1 and the baffle 2 are both assembled inside the high-pressure heater housing 3.

[0022] In a preferred embodiment, multiple sets of U-shaped tubes 1 are installed inside the high-pressure heater housing 3 via a tube sheet 31, and the U-shaped tubes 1 laterally penetrate the baffle plate 2. The baffle plate 2 serves to support the tube bundle and prevent the U-shaped tubes 1 from being damaged due to excessive pressure or vibration. The specific assembly method of the U-shaped tubes 1 and the baffle plate 2 is a mature existing technology and will not be described in detail here.

[0023] In this embodiment, the PEEK inner fixing half-ring 5 is symmetrically pressed and wrapped around the outer surface of the U-shaped tube 1. A fixing block 43 is welded to the outer end of the outer fixing half-ring 4, and the fixing block 43 is fixed to the surface of the baffle plate 2 by studs.

[0024] As a preferred implementation, the PEEK inner fixed half ring 5 and the outer fixed half ring 4 serve as fixing components for the U-shaped tube body 1 and the baffle plate 2, respectively. This transforms the original rigid connection between the elastic support bushing 41 and the ACF buffer support column 44 into a flexible connection, thereby absorbing and dissipating the vibration energy generated by the micro-amplitude relative motion and reducing the wear degree of the U-shaped tube fixing surface.

[0025] In this embodiment, a fluid channel 42 is provided on the outer circumferential surface of the elastic support ring 41. The fluid channel 42 is wide at both ends and narrow in the middle. The fluid channel 42 and the ACF buffer support 44 are arranged adjacently around the outer end of the inner fixed half ring 5 of the PEEK. The ACF buffer support 44 is adhesively embedded in the elastic support ring 41.

[0026] As a preferred embodiment, the fluid channel 42, which is wide at both ends and narrow in the middle, resembles a Venturi shape, allowing the fluid to flow more smoothly through the orifice area, reducing flow separation and vortex generation, and weakening the vibration caused by the fluid passing through the support structure. The elastic support ring 41 is made of reinforced polytetrafluoroethylene (PTFE) material. Both the elastic support ring 41 and the ACF buffer support 44 have damping characteristics, which can effectively absorb and dissipate vibration energy, while compensating for manufacturing and assembly gaps and maintaining good contact with the U-shaped tube body 1 at all times.

[0027] This utility model's anti-vibration support and fixing component for a high-pressure heater U-shaped tube effectively solves the problem in the prior art where the contact part between the U-shaped tube and the rigidly fixed two baffles is prone to slight relative motion, leading to tube wall wear and perforation. It effectively absorbs and dissipates the vibration energy generated by slight relative motion, greatly reducing the wear of the U-shaped tube by the anti-vibration support and fixing component, ensuring the durability and stability of the anti-vibration support and fixing component, and improving the vibration resistance of the U-shaped tube support and fixing component. It is suitable for anti-vibration support and fixing components for high-pressure heater U-shaped tubes.

Claims

1. A vibration-damping support and fixing component for a high-pressure heater U-shaped tube, comprising: U-shaped tube (1), wherein the tube head of the U-shaped tube (1) is connected to a tube sheet (31), characterized in that: The U-shaped tube (1) has baffles (2) inserted into its surface. The baffles (2) are symmetrically fixed with an outer fixing half-ring (4) screwed into the inner wall of the tube hole. An elastic support liner (41) is bonded to the inner ring surface of the outer fixing half-ring (4). A PEEK inner fixing half-ring (5) is connected to the inner end of the elastic support liner (41). An ACF buffer support column (44) is provided on the inner side of the elastic support liner (41). The ACF buffer support column (44) is located at the distance between the outer fixing half-ring (4) and the PEEK inner fixing half-ring (5).

2. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 1, characterized in that, The tube sheet (31) is fixedly connected to the side end of the high-pressure heater housing (3), and the U-shaped tube (1) and the baffle plate (2) are both installed inside the high-pressure heater housing (3).

3. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 1, characterized in that, The PEEK inner fixed half ring (5) is symmetrically pressed and wrapped around the outer surface of the U-shaped tube (1).

4. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 1, characterized in that, The outer fixed half ring (4) is welded with a fixing block (43) at the outer end, and the fixing block (43) is fixed to the surface of the baffle plate (2) by a stud.

5. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 1, characterized in that, The outer ring of the elastic support ring (41) has a fluid channel (42) which is wide at both ends and narrow in the middle.

6. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 5, characterized in that, The fluid channel (42) and the ACF buffer support (44) are arranged in an adjacent ring around the outer end of the PEEK inner fixed half ring (5).

7. The vibration-damping support and fixing component for a high-pressure heater U-shaped tube according to claim 1, characterized in that, The ACF buffer support (44) is bonded and embedded in the elastic support bushing (41).

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