Heat exchanger with tube bundle vibration prevention

Abstract

The utility model discloses a kind of heat exchanger of tube bundle anti-vibration, including heat exchange pipe, still include;Damping support, damping support includes first damping support and second damping support heat exchange pipe is placed installation on first damping support and second damping support upper portion, wherein, first damping support includes support plate, movable column for placing heat exchange pipe is slidably installed in the upper portion of support plate by spring, movable column inside is provided with air hole。The above-mentioned kind of heat exchanger of tube bundle anti-vibration, by first damping support containing support plate, movable column that can vertically slide is installed in the upper portion of support plate by spring, the recess for placing heat exchange pipe is equipped in movable column top, when vibration of heat exchange tube is caused by shell side high-speed fluid impact in the process of heat exchanger operation, movable column generates displacement with heat exchange tube, spring compression absorbs part vibration energy, and reversely provide stable support in release process, avoid resonance accumulation.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and in particular relates to a tube bundle anti-vibration heat exchanger. Background Technology

[0002] A heat exchanger is a device used to transfer heat between two or more fluids, and it is widely used in industries such as petroleum, chemical, power, food, air conditioning, and refrigeration. Its working principle is to transfer the heat energy of the hot fluid to the cold fluid through a heat transfer wall without mixing the different fluids, thereby achieving temperature regulation or energy recovery. Depending on the heat transfer method, structural form, and application, heat exchangers can be classified into various types, such as shell-and-tube, plate, finned tube, and air-cooled types. They have advantages such as high heat transfer efficiency, compact structure, energy saving, and environmental protection, and are important core heat exchange equipment in modern industrial processes.

[0003] However, existing technologies have some problems: during heat exchanger operation, especially when the shell-side flow velocity is high or the fluid medium is gas, the flow-induced vibration caused by the fluid impacting the tube bundle in the shell side is quite prominent. If the tube bundle structure design is unreasonable, the support spacing is too large, or the baffles are unevenly arranged, the tubes are prone to periodic vibration under high-frequency excitation. This can not only cause fatigue damage and weld cracking, but may even lead to serious consequences such as tube wall wear and perforation, and overall tube bundle instability. This results in a decrease in heat exchange efficiency, equipment leakage, or shutdown for maintenance, seriously affecting the safety and service life of the heat exchanger. Therefore, it is necessary to effectively reduce the risk of tube bundle vibration and improve the stable operation of the heat exchange system by optimizing the structural design, adding anti-vibration supports, and improving the fluid distribution. Therefore, we propose a tube bundle anti-vibration heat exchanger. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a tube bundle anti-vibration heat exchanger.

[0005] This utility model is implemented as follows: a tube bundle anti-vibration heat exchanger includes heat exchange tubes and a vibration damping bracket. The vibration damping bracket includes a first vibration damping bracket and a second vibration damping bracket. The heat exchange tubes are placed and installed on the upper part of the first vibration damping bracket and the second vibration damping bracket. The first vibration damping bracket includes a support plate. A movable column for placing the heat exchange tubes is slidably installed on the upper part of the support plate by a spring. The movable column has air holes inside. When the heat exchange tubes vibrate, the movable column performs a slow-release vibration damping action through the air holes.

[0006] As a preferred embodiment of this utility model, the upper part of the support plate is provided with mounting holes for inserting screws, and rubber pads are fixedly installed on both sides of the lower part of the support plate. During installation, screws are inserted into the mounting holes of the support plate and screwed to the support to fix the support plate. The lower part of the support plate is elastically attached to the support through the rubber pads.

[0007] As a preferred embodiment of the present invention, a guide post is fixedly connected to the upper part of the support plate, and the guide post passes through the first air cavity of the movable post and is fixedly connected to a second piston plate that is slidably installed inside the first air cavity.

[0008] As a preferred embodiment of this utility model, a second air chamber is further provided inside the movable column. The second air chamber is connected to the first air chamber through an air hole. When the second piston plate moves, the gas inside the first air chamber is exchanged with the gas inside the second air chamber through the air hole, and the gas is released slowly to cooperate with the spring to perform vibration reduction.

[0009] As a preferred embodiment of this invention, a first piston plate is slidably installed inside the second air chamber of the movable column. When the first piston plate moves, it changes the size of the cavity in the second air chamber that communicates with the air hole.

[0010] In a preferred embodiment of this invention, a knob is fixedly connected to the upper part of a lead screw rotatably installed inside the movable column, passing through the movable column. The lower part of the lead screw is screwed to the first piston plate. Rotating the knob controls the first piston plate to perform lifting and lowering movements.

[0011] As a preferred embodiment of this utility model, a support frame is fixedly installed on one side of the movable column, and a placement groove matching the shape of the heat exchange tube is opened on the upper part of the support frame, and the heat exchange tube is placed on the placement groove.

[0012] This invention enhances the overall vibration resistance from a structural perspective by setting a first vibration damping bracket and a second vibration damping bracket in the heat exchange tube arrangement area. The first vibration damping bracket includes a support plate, and a vertically sliding movable column is installed on the top of the support plate via a spring. The top of the movable column is provided with a groove for placing the heat exchange tube. During the operation of the heat exchanger, when the high-speed fluid impact in the shell side causes the heat exchange tube to vibrate, the movable column moves with the heat exchange tube, the spring is compressed to absorb part of the vibration energy, and provides stable support in the opposite direction during the release process, thus avoiding resonance accumulation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the movable column provided in an embodiment of this utility model;

[0015] Figure 3This is a schematic diagram of the support frame structure provided in an embodiment of the present utility model;

[0016] Figure 4 This is provided by the embodiment of the present utility model. Figure 3 Schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. First vibration damping bracket; 2. Second vibration damping bracket; 3. Heat exchanger tube;

[0018] 101. Support plate; 102. Spring; 103. Movable column; 104. First air chamber; 105. Air hole; 106. Second air chamber; 107. First piston plate; 108. Lead screw; 109. Knob; 110. Guide column; 111. Second piston plate; 112. Rubber pad; 113. Mounting hole; 114. Support frame; 115. Placement slot. Detailed Implementation

[0019] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0020] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown in the figure, the present invention provides a tube bundle anti-vibration heat exchanger, including heat exchange tubes 3 and a vibration damping bracket. The vibration damping bracket includes a first vibration damping bracket 1 and a second vibration damping bracket 2. The heat exchange tubes 3 are placed on the upper part of the first vibration damping bracket 1 and the second vibration damping bracket 2. The first vibration damping bracket 1 includes a support plate 101. A movable column 103 for placing the heat exchange tubes 3 is slidably installed on the upper part of the support plate 101 by a spring 102. The movable column 103 has an air hole 105 inside. When the heat exchange tubes 3 vibrate, the movable column 103 performs a slow-release vibration damping action through the air hole 105.

[0022] The aforementioned tube bundle vibration-resistant heat exchanger enhances its overall vibration resistance by providing a first damping bracket 1 and a second damping bracket 2 in the heat exchange tube 3 arrangement area. The first damping bracket 1 includes a support plate 101, and a vertically sliding movable column 103 is mounted on the support plate 101 via a spring 102. The top of the movable column 103 has a groove for placing the heat exchange tube 3. During the operation of the heat exchanger, when the high-speed fluid impact in the shell side causes the heat exchange tube 3 to vibrate, the movable column 103 moves with the heat exchange tube 3. The spring 102 compresses and absorbs part of the vibration energy, and provides stable support in the opposite direction during the release process, avoiding resonance accumulation.

[0023] More importantly, the movable column 103 has vents 105 inside, and its inner cavity is connected to the gas buffer chamber. The airflow is repeatedly compressed and discharged during the movement of the column, forming a gas damping effect, which effectively improves the system's ability to suppress high-frequency micro-vibrations. At the same time, a damping layer material is set between the column and the inner cavity, which provides shear resistance during the micro-sliding process, further absorbing residual energy and attenuating impact loads. This achieves multi-dimensional flexible support and dynamic response adjustment for the heat exchange tube 3, greatly improving the heat exchanger's vibration resistance and structural reliability.

[0024] In this embodiment, the upper part of the support plate 101 is provided with a mounting hole 113 for inserting a screw, and rubber pads 112 are fixedly installed on both sides of the lower part of the support plate 101. During installation, the screw is inserted into the mounting hole 113 of the support plate 101 and screwed to the support to fix the support plate 101. The lower part of the support plate 101 is elastically attached to the support through the rubber pads 112.

[0025] The upper part of the support plate 101 is provided with mounting holes 113 for inserting screws. By inserting the screws into the mounting holes 113 and screwing them into the external support, the entire support plate 101 structure is firmly fixed, preventing the support plate 101 from shifting or loosening due to vibration during equipment operation. In addition, elastic rubber pads 112 are provided on both sides of the lower part of the support plate 101. When the support plate 101 is installed in place, the rubber pads 112 elastically fit with the external support structure, which not only plays a buffering role and effectively absorbs the vibration impact transmitted by the screws or the equipment body, but also improves the overall sealing and stability of the installation fit, thereby avoiding structural resonance or bolt loosening caused by high-frequency operation of the equipment, thus enhancing the impact resistance and structural durability of the entire shock absorption system.

[0026] In this embodiment, a guide post 110 is fixedly connected to the upper part of the support plate 101. The guide post 110 passes through the first air chamber 104 of the movable post 103 and is fixedly connected to a second piston plate 111 that is slidably installed inside the first air chamber 104. A second air chamber 106 is also provided inside the movable post 103. The second air chamber 106 communicates with the first air chamber 104 through an air hole 105. When the second piston plate 111 moves, the gas inside the first air chamber 104 is exchanged with the gas inside the second air chamber 106 through the air hole 105. The body exchange slow release is coordinated with the spring 102 to perform vibration reduction. The first piston plate 107 is slidably installed inside the second air chamber 106 of the movable column 103. When the first piston plate 107 moves, it changes the size of the cavity that communicates with the air hole 105 in the second air chamber 106. The upper part of the screw 108 installed inside the movable column 103 passes through the movable column 103 and is fixedly connected to the knob 109. The lower part of the screw 108 is screwed to the first piston plate 107. Rotating the knob 109 controls the first piston plate 107 to perform lifting and lowering movements.

[0027] By fixing a guide column 110 to the upper part of the support plate 101 and inserting the guide column 110 into the first air chamber 104 inside the movable column 103, and then fixing it with the second piston plate 111 which is slidably installed in the first air chamber 104, the guidance of gas flow inside the movable column 103 and the precise control of piston movement are achieved. When the heat exchange tube 3 vibrates due to shell-side fluid disturbance during heat exchanger operation, the movable column 103 will undergo slight up-and-down displacement. During this process, the guide column 110 drives the second piston plate 111 to slide up and down in the first air chamber 104, thereby compressing or releasing the gas in the first air chamber 104.

[0028] The first air chamber 104 is connected to the second air chamber 106 at the bottom through an air hole 105 located inside the movable column 103. During the flow of gas between the two chambers, continuous air pressure changes are generated to achieve a slow release effect. That is, the compressed air in the first air chamber 104 flows into the second air chamber 106 through the air hole 105, so that the pressure is balanced and the instantaneous concentration of vibration energy is reduced.

[0029] Meanwhile, a first piston plate 107 is slidably disposed in the second air chamber 106, and its structure is screwed to the lower lead screw 108. The upper end of the lead screw 108 is connected to the column knob 109. The user can change the relative position of the lead screw 108 and the first piston plate 107 by rotating the knob 109, thereby adjusting the height of the first piston plate 107 in the second air chamber 106, that is, changing the effective volume of the second air chamber 106 and the air passage of the air hole 105, further refining the response characteristics of the gas buffer damping effect, and adapting to the vibration frequency and amplitude under different working conditions. The overall structure, through the synergistic effect of the guide column 110, double piston plate, double air chamber, and adjustable air hole 105, forms a composite gas damping mechanism that is both dynamically responsive and manually adjustable, greatly improving the system's absorption capacity and vibration reduction performance for vibration impacts under complex working conditions, effectively extending the service life of the heat exchange tube 3, and improving the safety and stability of equipment operation.

[0030] In this embodiment, a support frame 114 is fixedly installed on one side of the movable column 103. The upper part of the support frame 114 is provided with a placement groove 115 that matches the shape of the heat exchange tube 3, and the heat exchange tube 3 is placed on the placement groove 115.

[0031] A support frame 114 is fixedly installed on one side of the movable column 103. The upper part of the support frame 114 is provided with a placement groove 115 that matches the shape of the heat exchange tube 3. This groove is used to accurately position and stably support the heat exchange tube 3. When the heat exchanger is in operation and the shell-side fluid is disturbed or subjected to high-speed impact, the heat exchange tube 3 placed in the placement groove 115 can maintain stability while effectively reducing vibration through the combination of the spring 102 buffer, air chamber damping and sliding piston of the movable column 103 below. This avoids the shaking, wear and even breakage problems caused by the inability to effectively support the heat exchange tube 3 in traditional structures. The support frame 114 not only provides good structural constraints and geometric guidance, but also serves as a key connection unit of the entire vibration damping system, ensuring that the heat exchange tube 3 is always in a stable and safe working state under various complex working conditions.

[0032] The working principle of this utility model:

[0033] In use, by setting a first damping bracket 1 and a second damping bracket 2 in the area where the heat exchange tubes 3 are arranged, the overall vibration resistance is enhanced from a structural perspective. The first damping bracket 1 includes a support plate 101, and a vertically sliding movable column 103 is installed on the support plate 101 via a spring 102. The top of the movable column 103 has a groove for placing the heat exchange tubes 3. During the operation of the heat exchanger, when the high-speed fluid impact in the shell side causes the heat exchange tubes 3 to vibrate, the movable column 103 moves with the heat exchange tubes 3. The spring 102 compresses and absorbs part of the vibration energy, and provides stable support in the opposite direction during the release process, avoiding resonance accumulation. More importantly, the movable column 103 has an air hole 105 inside, and its inner cavity is connected to a gas buffer chamber. The airflow is repeatedly compressed and discharged during the movement of the column, forming a gas damping effect, which effectively improves the system's ability to suppress high-frequency micro-vibrations. Meanwhile, a damping layer material is set between the column and the inner cavity to provide shear resistance during the micro-sliding process, further absorb residual energy and attenuate impact loads, thereby realizing multi-dimensional flexible support and dynamic response adjustment of heat exchange tube 3, and significantly improving the vibration resistance stability and structural reliability of the heat exchanger.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] 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 tube bundle vibration-resistant heat exchanger, comprising heat exchange tubes (3), characterized in that, Also includes; The vibration damping bracket includes a first vibration damping bracket (1) and a second vibration damping bracket (2). The heat exchange tube (3) is placed and installed on the upper part of the first vibration damping bracket (1) and the second vibration damping bracket (2). The first shock absorber bracket (1) includes a support plate (101). A movable column (103) for placing a heat exchange tube (3) is slidably installed on the upper part of the support plate (101) via a spring (102). An air hole (105) is opened inside the movable column (103). When the heat exchange tube (3) vibrates, the movable column (103) performs a slow-release and shock-absorbing action through the air hole (105).

2. The tube bundle vibration-resistant heat exchanger as described in claim 1, characterized in that: The upper part of the support plate (101) is provided with mounting holes (113) for inserting screws, and rubber pads (112) are fixedly installed on both sides of the lower part of the support plate (101). During installation, a screw is inserted into the mounting hole (113) of the support plate (101) and screwed into the support to fix the support plate (101). The lower part of the support plate (101) is elastically attached to the support through the rubber pad (112).

3. A tube bundle vibration-resistant heat exchanger as described in claim 1, characterized in that: A guide post (110) is fixedly connected to the upper part of the support plate (101). The guide post (110) passes through the first air chamber (104) of the movable post (103) and is fixedly connected to the second piston plate (111) which is slidably installed inside the first air chamber (104).

4. A tube bundle vibration-resistant heat exchanger as described in claim 3, characterized in that: The movable column (103) is also provided with a second air chamber (106). The second air chamber (106) is connected to the first air chamber (104) through an air hole (105). When the second piston plate (111) moves, the gas inside the first air chamber (104) is exchanged with the gas inside the second air chamber (106) through the air hole (105) to slowly release the gas and cooperate with the spring (102) to perform vibration reduction.

5. A tube bundle vibration-resistant heat exchanger as described in claim 4, characterized in that: A first piston plate (107) is slidably installed inside the second air chamber (106) of the movable column (103). When the first piston plate (107) moves, it changes the size of the cavity that communicates with the air hole (105) in the second air chamber (106).

6. A tube bundle vibration-resistant heat exchanger as described in claim 5, characterized in that: A knob (109) is fixedly connected to the upper part of a lead screw (108) rotatably installed inside the movable column (103) and passing through the movable column (103). The lower part of the lead screw (108) is screwed to the first piston plate (107). Rotate the knob (109) to control the first piston plate (107) to move up and down.

7. A tube bundle vibration-resistant heat exchanger as described in claim 1, characterized in that: A support frame (114) is fixedly installed on one side of the movable column (103). The upper part of the support frame (114) has a placement groove (115) that matches the shape of the heat exchange tube (3). The heat exchange tube (3) is placed on the placement groove (115).

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