Condenser tube bundle support with cushioning

Abstract

The utility model relates to the technical field of tube bundle fixing part, concretely to a condenser tube bundle fixing part with buffer pad, including fixed frame, the fixed frame inside sets up buffer pad, the outside of fixed frame is sleeved and is connected with the limiting plate, the left side of fixed frame is inserted with screw rod, and the upper and lower ends of screw rod all are sleeved with nut, the right side fixed connection of screw rod has the pressing plate. The nut and gasket are sleeved on the upper and lower ends of screw rod, and the pressing force of pressing plate can be accurately adjusted by rotating the nut; at the same time, the setting of gasket can disperse the "local pressure" of nut to the surface of fixed frame, avoid the "rubber frame local deformation" caused by the direct extrusion of nut to fixed frame, ensure that the pressure received by the tube bundle is evenly distributed on the contact surface of arc pressing plate and tube bundle during the whole pressing process, by setting the limiting plate, when two groups of tube bundles are fixed, two groups of tube bundles can be isolated and placed, by setting rubber pad on the left and right sides of limiting plate, the outside of tube bundle can be protected.

Description

Technical Field

[0001] This utility model relates to the technical field of tube bundle fixing components, specifically a condenser tube bundle fixing component with a buffer pad. Background Technology

[0002] Condensers are critical equipment in thermal power plants, nuclear power plants, and other thermal systems, consisting of thousands of slender heat exchange tube bundles. These tube bundles typically pass through and are fixed to a large-area tube bundle support grid. During operation, due to factors such as fluid flow and turbine vibration, the tube bundles generate high-frequency micro-vibrations. Long-term vibration can lead to wear and collision between the tube bundles and the support grid, causing tube wall thinning or even rupture, resulting in cooling medium leakage and seriously affecting the safety and economy of the unit.

[0003] Traditional fixing methods typically use bolts to apply tightening force to press the grid onto the fixing plate. Although the structure is simple, its rigid contact method cannot effectively buffer and absorb the vibration energy of the tube bundle. Instead, it is prone to stress concentration, which can accelerate fatigue damage to the tube bundle and thus affect the overall service life of the device. To address this issue, a condenser tube bundle fixing component with a buffer pad is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a condenser tube bundle fixing component with a buffer pad to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a condenser tube bundle fixing component with a buffer pad, comprising a fixing frame, a buffer pad provided on the inner side of the fixing frame, a limiting plate sleeved on the outer side of the fixing frame, a screw inserted on the left side of the fixing frame, and nuts sleeved on both the upper and lower ends of the screw, and a pressure plate fixedly connected to the right side of the screw.

[0006] Preferably, the fixing frame is U-shaped and made of rubber. The buffer pad is attached to the inner side of the fixing frame, and the tube bundle can be fixed by the fixing frame.

[0007] Preferably, the limiting plate is movably sleeved on the fixed frame, and the limiting plate has a slot that cooperates with the fixed frame, so that the two sets of tube bundles can be separated by the limiting plate.

[0008] Preferably, the left and right sides of the limiting plate are fixedly connected with rubber pads of an arc shape to increase the protection of the device.

[0009] Preferably, the screw is movably engaged with the fixed frame, and the fixed frame has a slot that mates with the screw, so that the pressure plate can be moved by the screw.

[0010] Preferably, both ends of the screw are fitted with washers, and both ends of the washers abut against the nut and the fixing frame, so that the screw can be locked by the nut.

[0011] Preferably, the pressure plate is arranged in an arc shape and is made of rubber material, which can limit the tube bundle.

[0012] This utility model provides a condenser tube bundle fixing component with a buffer pad, which has the following beneficial effects:

[0013] The screw is fitted with nuts and washers at its upper and lower ends. Rotating the nuts allows for precise adjustment of the clamping force of the pressure plate. Simultaneously, the washers distribute the "localized pressure" of the nuts across the surface of the fixing frame, preventing "localized deformation of the rubber frame" caused by the nuts directly pressing against the frame. This ensures that the pressure on the tube bundle is evenly distributed across the contact surface between the arc-shaped pressure plate and the tube bundle throughout the clamping process, eliminating stress concentration points. The fixing frame employs a U-shaped opening structure, with the screw movably engaged in a slot on the left side of the fixing frame. When the tube bundle diameter changes (e.g., differences in tube bundle diameter between different condenser models), the position of the screw in the slot and the spacing of the pressure plates can be adjusted by modifying the nut position to achieve stable fixing of "tube bundles of different diameters" (without needing to replace the fixing components, improving versatility). Furthermore, the U-shaped opening facilitates quick insertion of the tube bundle into the fixing frame, improving installation efficiency compared to traditional closed fixing frames.

[0014] By setting a limiting plate, the two sets of tube bundles can be isolated when they are being fixed. Rubber pads are provided on both sides of the limiting plate to protect the outside of the tube bundles, increasing the protective performance of the device during use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional exploded view of the components of this utility model;

[0018] Figure 3 This is a three-dimensional exploded view of the components of this utility model;

[0019] Figure 4 This is a three-dimensional exploded view of the components of this utility model.

[0020] In the diagram: 1. Fixed frame; 2. Buffer pad; 3. Limiting plate; 4. Screw; 5. Nut; 6. Pressure plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, this embodiment proposes a condenser tube bundle fixing component with a buffer pad, including a fixing frame 1, a buffer pad 2 provided inside the fixing frame 1, a limiting plate 3 sleeved on the outside of the fixing frame 1, a screw 4 inserted on the left side of the fixing frame 1, and nuts 5 sleeved on both the upper and lower ends of the screw 4, and a pressure plate 6 fixedly connected to the right side of the screw 4.

[0023] The fixing frame 1 is U-shaped and made of rubber. The rubber material of the fixing frame 1 makes the device fit the outer surface of the tube bundle more closely when fixing the tube bundle, and the wrapping is stronger. By setting the fixing frame 1 into a U-shaped structure, it is easy to adapt to tube bundles of different diameters. The buffer pad 2 is attached to the inner side of the fixing frame 1. By setting the buffer pad 2, the outer surface of the tube bundle can be protected, which increases the protection of the device during use.

[0024] The limiting plate 3 is movably sleeved on the fixed frame 1. The limiting plate 3 has a slot that matches the fixed frame 1. The limiting plate 3 can be adjusted according to the position of different tube bundles. The limiting plate 3 can be adjusted to a suitable position for use. Both the left and right sides of the limiting plate 3 are fixedly connected with rubber pads with an arc structure. The rubber material is soft and can isolate the limiting plate 3 (usually made of metal) from direct contact with the external structure, avoiding wear of parts caused by metal friction.

[0025] The screw 4 is movably engaged with the fixed frame 1, and the fixed frame 1 has a slot that mates with the screw 4. Washers are fitted at both ends of the screw 4, and both ends of the washers abut against the nut 5 and the fixed frame 1. The pressure plate 6 has an arc-shaped structure and is made of rubber. The screw 4 is movably engaged in the slot of the fixed frame 1, and its position can be finely adjusted up and down and left and right along the slot. When the tube bundle diameter changes (such as differences in tube bundle diameter between different condenser models, or slight dimensional deviations in the same batch of tube bundles), there is no need to replace the fasteners. Simply adjust the position of the screw 4 in the slot, and the distance between the pressure plate 6 and the fixed frame 1 can be adjusted in conjunction with the nut 5. This ensures that the pressure plate 6 can accurately fit the surface of tube bundles of different diameters, achieving "stable clamping" and significantly improving the versatility of the fasteners (traditional fasteners need to be customized according to the tube bundle diameter, resulting in poor versatility). This avoids the need for the nut 5 (rigid) to... The components directly compress the fixing frame 1 (rubber material), causing local deformation and accelerated aging of the fixing frame 1 (such as rubber cracking caused by the indentation of nut 5), thus extending the service life of the fixing frame 1; the gasket can increase the contact area between nut 5 and fixing frame 1, preventing nut 5 from sinking into fixing frame 1 due to "excessive clamping force", and at the same time preventing nut 5 from loosening during vibration (the friction of the gasket can improve the anti-loosening effect of nut 5), ensuring long-term stable clamping state, and avoiding fixing failure of tube bundle due to loosening of nut 5. On the one hand, the larger contact area can evenly transmit the clamping force to the surface of tube bundle, avoiding tube bundle deformation caused by local stress concentration (especially thin-walled tube bundles, which can prevent the tube wall from being crushed); on the other hand, the arc-shaped fit can form "wrap-type clamping", preventing tube bundle from sliding along the surface of pressure plate 6 during vibration (such as radial shaking of tube bundle caused by steam impact), improving fixing stability.

[0026] Working principle: Place the condenser tube bundle into the U-shaped opening of the fixed frame 1, so that the outer wall of the tube bundle is in contact with the buffer pad 2 on the inner side of the fixed frame 1 (the buffer pad 2 initially isolates the tube bundle from the fixed frame 1 to avoid direct rigid contact), adjust the position of the tube bundle in the fixed frame 1, and ensure that the area of ​​the tube bundle to be fixed is aligned with the position of the right pressure plate 6.

[0027] The limiting plate 3 is fitted onto the outside of the fixed frame 1 through its own slot. The position of the limiting plate 3 on the fixed frame 1 is adjusted by sliding. The position of the screw 4 in the slot on the left side of the fixed frame 1 is manually adjusted so that the arc-shaped pressure plate 6 on the right side fits against the outer wall of the tube bundle. Then, washers are put on the upper and lower ends of the screw 4 in sequence, and the nuts 5 are screwed on. The nuts 5 are rotated clockwise (the upper and lower nuts 5 can be rotated alternately). The screw 4 drives the pressure plate 6 to gradually press the tube bundle until the tube bundle is no longer loose in the fixed frame 1.

[0028] Finally, several points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may change. Second, the accompanying drawings of the embodiments disclosed in this utility model only involve structures relevant to the embodiments disclosed in this utility model. Other structures can refer to common designs. Where there is no conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A condenser tube bundle fixing component with a buffer pad, comprising a fixing frame (1), characterized in that: A buffer pad (2) is provided on the inner side of the fixed frame (1), a limiting plate (3) is sleeved on the outer side of the fixed frame (1), a screw (4) is inserted on the left side of the fixed frame (1), and nuts (5) are sleeved on both the upper and lower ends of the screw (4), and a pressure plate (6) is fixedly connected to the right side of the screw (4).

2. The condenser tube bundle fixing component with buffer pad according to claim 1, characterized in that: The fixing frame (1) is U-shaped and made of rubber. The buffer pad (2) is attached to the inside of the fixing frame (1).

3. A condenser tube bundle fixing component with a buffer pad according to claim 1, characterized in that: The limiting plate (3) is movably sleeved on the fixed frame (1), and the limiting plate (3) has a slot that cooperates with the fixed frame (1).

4. A condenser tube bundle fixing component with a buffer pad according to claim 1, characterized in that: Both sides of the limiting plate (3) are fixedly connected with rubber pads in an arc shape.

5. A condenser tube bundle fixing component with a buffer pad according to claim 1, characterized in that: The screw (4) is movably engaged on the fixed frame (1), and the fixed frame (1) has a slot that cooperates with the screw (4).

6. A condenser tube bundle fixing component with a buffer pad according to claim 1, characterized in that: Both ends of the screw (4) are fitted with washers, and both ends of the washers abut against the nut (5) and the fixing frame (1).

7. A condenser tube bundle fixing component with a buffer pad according to claim 1, characterized in that: The pressure plate (6) is arranged in an arc shape and is made of rubber.

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