Vibration-wear-resistant condenser copper pipe fixing device

Abstract

The invention belongs to the technical field of condenser copper pipes, and particularly relates to an anti-vibration and anti-abrasion condenser copper pipe fixing device which comprises an installation base. The pipe body is arranged on the mounting base, a fixing clamp used for fixing the pipe body is mounted outside the pipe body, the fixing clamp is in a C shape, opposite trigger arms extend from the two ends of the C shape of the fixing clamp, inclined blocks are arranged on the faces, away from each other, of the two trigger arms, and the inclined blocks are arranged on the two ends of the pipe body. A locking assembly used for locking the fixing clamp is arranged in the direction, corresponding to the C-shaped opening, of the fixing clamp. And an automatic repairing mechanism. Vibration force of the copper pipe is converted into pushing force on the repairing agent, so that the repairing agent is released to the abraded position of the copper pipe, the self-repairing effect is achieved, meanwhile, friction heat production is achieved, heat is transmitted to the memory alloy fixing clamp, the phase change temperature is reached, the shape memory effect is triggered, and the shape memory alloy fixing clamp rebounds to the initial clamping state from the pre-deformation state.

Description

Technical Field

[0001] This invention relates to the field of condenser copper tube technology, and more particularly to a condenser copper tube fixing device to prevent vibration and wear. Background Technology

[0002] As a core heat exchange device in refrigeration, chemical, and shipbuilding industries, the installation stability of the copper tubes inside the condenser directly affects the heat exchange efficiency and service life. During condenser operation, factors such as compressor vibration, fluid disturbance, and equipment start-up and shutdown impacts can cause continuous radial and axial vibrations in the copper tubes. This results in the copper tubes and the fixed device being in a state of dynamic friction for a long time, leading to problems such as wear on the contact surface and loosening of the copper tubes.

[0003] Existing condenser copper tube fixing devices mainly rely on elastic support structures (such as rubber pads and spring clamps) or rigid clamping structures for fixation. While these can buffer vibration to some extent, they have the following significant drawbacks: First, the elastic components of the vibration damping structure are prone to fatigue aging due to long-term vibration, leading to a decrease in the damping effect and an inability to continuously offset vibration energy. This, in turn, exacerbates the friction and wear between the copper tube and the fixing device. Furthermore, there is a lack of effective self-repair mechanism after wear occurs, requiring manual disassembly and maintenance periodically, which not only increases operation and maintenance costs but also affects the continuous operation of the equipment. Second, some fixing devices using shape memory alloys rely on external energy (such as electric heating) to trigger the shape memory effect for springback reset, resulting in high energy consumption and limited adaptability, making it difficult to adapt to the complex operating conditions of a closed and humid condenser. Third, the existing contact points between the copper tube and the clamps lack self-repair functions due to friction-induced wear surfaces, which can easily lead to fatigue cracks in the worn areas of the copper tube. Especially for thin-walled copper tubes, crack propagation can lead to copper tube rupture, causing media leakage and equipment shutdown.

[0004] In addition, the operating environment of condensers is often accompanied by high temperature, high humidity and corrosive media. The materials of traditional fixed devices are not weather-resistant and wear-resistant enough, which further shortens their service life. At the same time, existing devices lack real-time perception of vibration status and wear degree, and maintenance decisions rely on manual inspections, making it difficult to achieve predictive maintenance. This can easily lead to serious consequences such as copper pipe leakage and equipment failure due to the expansion of local wear.

[0005] To address the aforementioned technical challenges, a condenser copper tube fixing device needs to be developed that requires no external energy and can simultaneously achieve shape rebound and wear self-repair. By innovatively utilizing the mechanical kinetic energy generated by vibration itself, the device drives the release of self-repairing materials and triggers the phase change of shape memory alloys, forming a closed-loop mechanism of vibration-energy conversion-synergistic repair. This fundamentally improves the vibration resistance, wear resistance, and ease of maintenance of the fixing device, meeting the requirements for efficient, stable, and long-cycle operation of the condenser. Summary of the Invention

[0006] To address the aforementioned problems, this invention proposes a condenser copper tube fixing device to prevent vibration and wear, thereby more accurately solving the problems mentioned in the background art.

[0007] This invention is achieved through the following technical solution: This invention proposes a condenser copper tube fixing device to prevent vibration and wear, comprising: Mounting base; The tube body is disposed on the mounting base. A fixing clip for fixing the tube body is installed on the outside of the tube body. The fixing clip is C-shaped. Opposite trigger arms extend from both ends of the C-shaped fixing clip. An inclined block is provided on the side of the two trigger arms that are far apart. A locking component for locking the fixing clip is provided in the direction of the C-shaped opening. An automatic repair mechanism includes a repair cavity disposed within the fixing clamp for storing repair agent, a plurality of micro-guide ports communicating between the inner ring of the fixing clamp and the repair cavity, a first one-way valve disposed within the micro-guide ports, a drive box mounted on the outside of the fixing clamp, a pressurized through hole opened between the drive box and the repair cavity, a second one-way valve disposed within the through hole, and a self-pressurizing component disposed within the drive box; The heat-conducting assisted rebound mechanism includes a rotating rod rotatably mounted on the drive box, a cam fixed on the rotating rod, a friction plate fixed on the end of the cam away from the rotating rod, an elastic steel that frictionally engages with the friction plate between the drive box and the fixed clamp, and a heat-conducting layer provided on the fixed clamp corresponding to the contact portion between the elastic steel and the fixed clamp, and a pushing assembly mounted on the drive box.

[0008] Preferably, the locking assembly includes a fixing plate fixed on the mounting base, two limiting plates corresponding to the two inclined blocks are movably disposed on the fixing plate, the limiting plates are provided with slots for accommodating the inclined blocks, and a mounting rod for sliding the limiting plates is fixed inside the fixing plate. Two second springs are sleeved on the mounting rod, and the two second springs are respectively located on the sides of the two limiting plates that are far apart from each other.

[0009] Preferably, the self-pressurizing assembly includes a first magnet slidably disposed within the drive box, a first spring fixed between the bottom of the first magnet and the bottom wall of the drive box, an actuating rod fixed on the first magnet, and a top plate cooperating with the actuating rod mounted on the fixed plate.

[0010] Preferably, the actuating rod extends through the top of the drive box and contacts the top plate at the end furthest from the first spring.

[0011] Preferably, the pushing assembly includes a second magnet that is reciprocally and vertically mounted on the drive box and attracts the first magnet. A first rocker arm is hinged to the second magnet, and a second rocker arm is hinged to one end of the first rocker arm. The second rocker arm is fixed to the rotating rod at the end away from the first rocker arm.

[0012] Preferably, the drive box is provided with a groove for the second magnet to slide.

[0013] Preferably, the fixing clip is made of shape memory alloy.

[0014] Preferably, the friction pad is made of copper.

[0015] Preferably, the heat-conducting layer is made of aluminum foil, which is wrapped around elastic steel.

[0016] Preferably, the inner wall of the fixing clamp is provided with a plurality of resistance pads at intervals.

[0017] Compared with the prior art, the present invention provides a condenser copper tube fixing device to prevent vibration and wear, which has the following beneficial effects: This anti-vibration and wear condenser copper tube fixing device is driven by the mechanical kinetic energy of the tube vibration. It triggers the shape memory springback of the shape memory alloy fixing clamp to re-clamp the tube and solve the loosening problem. At the same time, it squeezes and releases the repair agent to precisely repair the wear surface of the tube and the fixing clamp. It resolves the chain reaction of vibration-loosening-wear in one go, and the repair is highly targeted and synergistic.

[0018] This anti-vibration and wear condenser copper tube fixing device uses a repair agent that is directed to the worn area through a micro-guide. It is only released when the tube shakes, causing the wear to worsen, thus avoiding waste of the repair agent. At the same time, the repair agent works in conjunction with the spring-loaded clamping action to achieve a tight repair under the pressure of contact, reducing the risk of fatigue damage and corrosion to the tube and extending the service life of the copper tube and fixing device.

[0019] This anti-vibration and wear condenser copper tube fixing device relies entirely on the kinetic energy generated by the vibration of the tube itself to complete unlocking, rebound, repair agent delivery, and frictional heat generation. It requires no external power supply or heating equipment, has zero energy consumption, and only triggers the action when the vibration intensity exceeds the threshold. It is suitable for the dynamic operating conditions of condensers and is especially suitable for complex environments such as closed and humid conditions. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a condenser copper tube fixing device for vibration and wear prevention proposed in this invention; Figure 2 This is a cross-sectional view of the fixing plate portion of a condenser copper tube fixing device for vibration and wear prevention proposed in this invention. Figure 3This is a schematic diagram of the fixing clamp portion of a condenser copper tube fixing device for vibration and wear prevention proposed in this invention; Figure 4 This invention proposes a condenser copper tube fixing device to prevent vibration and wear. Figure 3 Enlarged diagram of part A in the diagram; Figure 5 This is a cross-sectional view of the fixing clamp portion of a condenser copper tube fixing device for vibration and wear prevention proposed in this invention. Figure 6 This invention proposes a condenser copper tube fixing device to prevent vibration and wear. Figure 5 Enlarged diagram of part B in the diagram; Figure 7 This is a schematic diagram of the fixing clamp and limiting part of a condenser copper tube fixing device for vibration and wear prevention proposed in this invention.

[0021] In the diagram: 1. Tube body; 2. Fixing clamp; 201. Repair cavity; 202. Micro guide port; 203. Through hole; 3. Drive box; 301. Touch rod; 302. First magnet plate; 303. First spring; 4. Slide groove; 401. Second magnet; 402. First rocker arm; 403. Second rocker arm; 404. Cam; 405. Friction plate; 406. Elastic steel; 5. Inclined block; 6. Limiting plate; 601. Slot; 602. Mounting rod; 603. Second spring; 7. Fixing plate; 8. Top plate; 9. Mounting base; 10. Resistance pad. Detailed Implementation

[0022] To more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings. Example

[0023] like Figures 1-7 As shown, an embodiment of the present invention provides a condenser copper tube fixing device to prevent vibration and wear, comprising: Mounting bracket 9; The tube body 1 is mounted on the mounting base 9. A fixing clip 2 for fixing the tube body 1 is mounted on the outside of the tube body 1. The fixing clip 2 is C-shaped, and the two ends of the C-shape of the fixing clip 2 extend opposite trigger arms. The fixing clip 2 is made of shape memory alloy. An inclined block 5 is provided on the side of the two trigger arms that are far apart. A locking component for locking the fixing clip 2 is provided in the direction of the C-shaped opening. The locking component includes a fixing plate 7 fixed on the mounting base 9. Two limiting plates 6 corresponding to the two inclined blocks 5 are movably provided on the fixing plate 7. The limiting plates 6 are provided with slots 601 for accommodating the inclined blocks 5. An installation rod 602 for sliding the limiting plates 6 is fixed inside the fixing plate 7. Two second springs 603 are sleeved on the installation rod 602. The two second springs 603 are respectively on the side of the two limiting plates 6 that are far apart. Multiple resistance pads 10 are spaced apart on the inner wall of the fixing clip 2.

[0024] The locking assembly, through the wedge-shaped engagement of the limiting plate 6 slot 601 and the inclined block 5, combined with the guidance of the mounting rod 602 and the pre-tension of the second spring 603, forms a bidirectional symmetrical locking force, which can effectively resist the impact force brought by the normal vibration of the tube body 1. The reverse constraint force of the second spring 603 can prevent the inclined block 5 from accidentally disengaging, and unlocking is only performed when the vibration exceeds the threshold, balancing the needs of stability and overload unlocking. Compared with the clamps of the prior art, the fixing clamp 2 of this application adopts a C-shaped memory alloy structure, combined with the design of the trigger arms at both ends and the inclined block 5, which can form a continuous clamping force through pre-deformation locking. The wrapping property of the C-shaped structure combined with the shape memory effect of the memory alloy can not only ensure the fit of the tube body 1, but also quickly rebound and reset after unlocking, maintaining a stable constraint on the tube body 1 for a long time.

[0025] In this invention, the automatic repair mechanism includes a repair cavity 201 disposed within a fixing clamp 2 for storing repair agent. Multiple micro-ports 202 communicate between the inner ring of the fixing clamp 2 and the repair cavity 201. A first one-way valve is provided within each micro-port 202. A drive box 3 is installed outside the fixing clamp 2. A pressurizing through hole 203 is opened between the drive box 3 and the repair cavity 201. A second one-way valve is provided within the through hole 203. A self-pressurizing component is provided within the drive box 3. The self-pressurizing component includes a first magnet slidably disposed within the drive box 3. A first spring 303 is fixed between the bottom of the first magnet and the bottom wall of the drive box 3. An actuating rod 301 is fixed on the first magnet. A top plate 8, cooperating with the actuating rod 301, is installed on a fixing plate 7. The end of the actuating rod 301 away from the first spring 303 penetrates the top of the drive box 3 and contacts the top plate 8.

[0026] The repair chamber 201 is connected to the inner ring of the fixing clamp 2 through multiple micro-ports 202. The repair agent can be directly and directionally discharged to the worn contact surface between the tube body 1 and the fixing clamp 2, avoiding waste of the repair agent. The first one-way valve in the micro-port 202 can prevent the repair agent from flowing back or the medium on the side of the tube body 1 from seeping into the repair chamber 201. The second one-way valve in the through hole 203 can prevent the repair agent in the repair chamber 201 from flowing back to the drive box 3, ensuring that the repair agent effectively acts on the worn part. When the tube body 1 shakes and causes the fixing clamp 2 to deform, the trigger rod 301 and the top plate 8 squeeze and push the first magnet to compress the first spring 303. The gas in the drive box 3 is pressurized and delivered to the repair chamber 201 through the through hole 203. No external pump, power supply or other equipment is required. Compared with the existing technology that only relies on the wear resistance of the material to resist friction and requires manual replacement of parts after wear, this invention triggers the release of the repair agent when the tube body 1 vibrates and causes the fixing clamp 2 to deform, thus achieving a self-repairing effect on the worn part of the tube body 1.

[0027] In this invention, the heat-conducting assisted rebound mechanism includes a rotating rod rotatably mounted on a drive box 3. A cam 404 is fixed on the rotating rod, and a friction plate 405 is fixed on the end of the cam 404 away from the rotating rod. An elastic steel 406 is provided between the drive box 3 and the fixing clamp 2 to rub against the friction plate 405. The friction plate 405 is made of copper. A heat-conducting layer is provided on the fixing clamp 2 corresponding to the contact portion between the elastic steel 406 and the fixing clamp 2. The heat-conducting layer is made of aluminum foil, which is wrapped around the elastic steel 406. A pushing assembly is installed on the drive box 3. The pushing assembly includes a second magnet 401 that is reciprocally and vertically mounted on the drive box 3 and attracts the first magnet. A first rocker arm 402 is hinged to the second magnet 401. A second rocker arm 403 is hinged to one end of the first rocker arm 402. The second rocker arm 403 is fixed to the rotating rod at the end away from the first rocker arm 402. A sliding groove 4 is provided on the drive box 3 for the second magnet 401 to slide.

[0028] In this process, the friction between the friction plate 405 and the elastic steel 406 generates heat, which is then directionally transferred to the shape memory alloy clamp 2 by the aluminum foil heat conduction layer. This precisely raises the temperature of the clamp 2 to the phase change point, significantly enhancing the triggering efficiency and rebound force of the shape memory effect. This ensures that the clamp 2 quickly and stably returns to its initial clamping state after unlocking, avoiding rebound failure caused by insufficient phase change of the shape memory alloy. Compared to existing shape memory alloy phase changes that mostly rely on electric heating or passive triggering by ambient temperature, this application converts vibration kinetic energy into heat energy through a mechanical structure to achieve heating without the need for external energy sources. Moreover, heat is only generated when rebound is required, resulting in energy utilization efficiency far exceeding that of traditional methods.

[0029] The working principle of the adaptive variable angle of attack stirrer provided by this invention is as follows: In use, the shape memory alloy clamp 2 is fitted onto the tube body 1 and pressed into a pre-deformed state, causing its C-shaped opening to shrink. The inclined block 5 on the trigger arm is aligned with the slot 601 on the limiting plate 6. The clamp 2 is gently pushed so that the inclined block 5 is engaged in the slot 601. Simultaneously, the limiting plate 6 compresses the second spring 603, locking the clamp 2 in a pre-tightened state. When the tube body 1 shakes, force is applied to the clamp 2, causing a slight deformation of the arc-shaped portion of the clamp 2. As long as the deformation does not exceed the threshold of the second spring 603, the second spring 603 provides a reverse constraint force, keeping the inclined block 5 locked to the slot 601. The clamping clip 2 remains clamped. When vibration intensifies (e.g., compressor malfunction, fluid impact), the impact force on the tube 1 exceeds the threshold. The arc-shaped opening of the clamping clip 2 is expanded to the critical value. The pressure of the trigger arm on the limiting plate 6 overcomes the preload of the second spring 603, and the inclined block 5 disengages from the slot 601 and unlocks. After unlocking, the shape memory alloy clamping clip 2 releases its preload potential energy under the shape memory effect, springs back to its initial arc-shaped state, and re-fits tightly against the outer wall of the tube 1. At the same time, the trigger arm returns to its original position with the springback and drives the inclined block 5 to re-enter the slot 601, completing the automatic reset and secondary locking effect. Simultaneously, when the tube 1 shakes and expands the clamping clip 2, the trigger rod... When 301 is pressed against the top plate 8, the trigger rod 301 moves the first magnet downward and compresses the first spring 303. As the first magnet moves downward, the sealing strip between the outer ring of the first magnet and the drive box 3 compresses and delivers the gas inside the drive box 3 to the repair chamber 201, applying pressure to it. This pressurization causes the repair agent inside the repair chamber 201 to be discharged through the micro-channel 202 and overflow at the wear point between the tube body 1 and the fixing clamp 2, thus achieving automatic repair of the tube body 1. As the first magnet moves downward, the second magnet 401 follows suit. The first rocker arm 402 moves downward and pushes the second rocker arm 403 to make a circular motion around the rotating rod. The rotating rod will rotate with the second rocker arm 403. Under the transmission of the rotating rod, the cam 404 rotates with the rotating rod. When the protruding end of the cam 404 approaches the elastic steel 406, the friction plate 405 contacts the elastic steel 406 and generates heat through friction. Since the aluminum foil on the elastic steel 406 has thermal conductivity, it can transfer the heat generated between the friction plate 405 and the elastic steel 406 to the shape memory alloy fixing clamp 2, so that it reaches the phase change temperature, triggering the shape memory effect and rebounding from the pre-deformed state to the initial clamping state.

[0030] Finally, it should be noted that the basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification, and therefore remain within the spirit and scope of the exemplary embodiments of this specification. Furthermore, this specification uses specific terms to describe embodiments of this specification. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this specification can be appropriately combined. Moreover, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this specification are not intended to limit the order of the processes and methods of this specification.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A condenser copper tube fixing device for vibration and wear prevention, characterized in that, include: Mounting base; The tube body is disposed on the mounting base. A fixing clip for fixing the tube body is installed on the outside of the tube body. The fixing clip is C-shaped. Opposite trigger arms extend from both ends of the C-shaped fixing clip. An inclined block is provided on the side of the two trigger arms that are far apart. A locking component for locking the fixing clip is provided in the direction of the C-shaped opening. An automatic repair mechanism includes a repair cavity disposed within the fixing clamp for storing repair agent, a plurality of micro-guide ports communicating between the inner ring of the fixing clamp and the repair cavity, a first one-way valve disposed within the micro-guide ports, a drive box mounted on the outside of the fixing clamp, a pressurized through hole opened between the drive box and the repair cavity, a second one-way valve disposed within the through hole, and a self-pressurizing component disposed within the drive box; The heat-conducting assisted rebound mechanism includes a rotating rod rotatably mounted on the drive box, a cam fixed on the rotating rod, a friction plate fixed on the end of the cam away from the rotating rod, an elastic steel that frictionally engages with the friction plate between the drive box and the fixed clamp, and a heat-conducting layer provided on the fixed clamp corresponding to the contact portion between the elastic steel and the fixed clamp, and a pushing assembly mounted on the drive box.

2. The condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The locking assembly includes a fixed plate fixed on the mounting base. Two limiting plates corresponding to the two inclined blocks are movably disposed on the fixed plate. The limiting plates are provided with slots for accommodating the inclined blocks. An installation rod for sliding the limiting plates is fixed inside the fixed plate. Two second springs are sleeved on the installation rod. The two second springs correspond to the sides of the two limiting plates that are far apart from each other.

3. The condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The self-pressurizing assembly includes a first magnet slidably disposed inside the drive box, a first spring fixed between the bottom of the first magnet and the bottom wall of the drive box, an actuating rod fixed on the first magnet, and a top plate cooperating with the actuating rod mounted on the fixed plate.

4. The condenser copper tube fixing device for vibration and wear prevention according to claim 3, characterized in that, The actuating rod extends through the top of the drive box and contacts the top plate at the end furthest from the first spring.

5. A condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The pushing assembly includes a second magnet that is reciprocally and vertically mounted on the drive box and attracts the first magnet. A first rocker arm is hinged to the second magnet. One end of the first rocker arm is hinged to a second rocker arm. The end of the second rocker arm away from the first rocker arm is fixed to the rotating rod.

6. A condenser copper tube fixing device for vibration and wear prevention according to claim 5, characterized in that, The drive box is provided with a sliding groove for the second magnet to slide.

7. A condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The fixing clip is made of shape memory alloy.

8. A condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The friction pad is made of copper.

9. A condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, The heat-conducting layer is made of aluminum foil, which is wrapped around elastic steel.

10. A condenser copper tube fixing device for vibration and wear prevention according to claim 1, characterized in that, Multiple resistance pads are spaced apart on the inner wall of the fixing clamp.

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