Adjustable thermal expansion compensation connecting device

Abstract

The utility model discloses an adjustable thermal expansion compensation connecting device, which relates to the technical field of high-temperature flue gas treatment equipment, and comprises a tower body and a steel body support, a compensation assembly is arranged between the tower body and the steel body support, the compensation assembly comprises a compensation sliding plate, and the compensation sliding plate is arranged on the outer side of the tower body. The compensation sliding plate can perform circular motion in the vertical direction, is provided with a compensation sliding block with an adjustable horizontal position, is arranged on the outer side of the tower body and can perform vertical circular motion so as to absorb thermal expansion or shrinkage stress in the vertical direction generated by temperature change of the tower body and prevent a welding part from cracking or the tower body from deforming; the horizontal adjustable compensation sliding block is arranged on the compensation sliding plate and welded to the tower body, the horizontal position of the compensation sliding block is adjusted to adapt to thermal expansion or contraction of the tower body in the horizontal direction, and stress at the welding position is further relieved.

Description

Technical Field

[0001] This utility model relates to the technical field of high-temperature flue gas treatment equipment, and in particular to an adjustable thermal expansion compensation connection device. Background Technology

[0002] High-temperature flue gas treatment equipment is a crucial device in the industrial field for treating high-temperature flue gas and removing harmful components. The desulfurization tower is one of the core components. Desulfurization towers are generally columnar and vertical, constructed of corrosion-resistant steel or with anti-corrosion coatings to enhance their resistance. Their structure mainly includes an inlet, spray layer, packing layer, outlet, and demister. Sulfur-containing gas enters the tower through the inlet and flows upwards. The spray nozzles in the spray layer propel alkaline desulfurizing agent (such as limestone slurry) at high speed, forming fine droplets. These droplets react with acidic gases such as sulfur dioxide in the sulfur-containing gas, undergoing an acid-base neutralization reaction to produce harmless substances such as sulfates. The desulfurized gas passes through the demister to remove the carried droplets before exiting through the outlet. Over the years, desulfurization towers have evolved into various types, including Venturi type, swirl plate type, swirl column type, float type, sieve plate type, and pneumatic emulsification type, and are widely used in industries such as power, chemical, and metallurgy.

[0003] During the construction of desulfurization towers, a common method is to weld load-bearing hoops to the outside of the tower body, place these hoops on a steel support frame, and then weld them together to secure the tower body to the support frame. This construction method is relatively simple. However, in actual use, desulfurization towers typically operate at high internal temperatures when processing high-temperature flue gas. As is well known, metal materials expand and contract with temperature changes. When the internal temperature of the desulfurization tower rises, the metal at the welded joint expands; conversely, when the temperature drops, the metal contracts. Because the weld between the desulfurization tower and the steel support frame is a rigid connection, the welded joint cannot freely expand or contract. Therefore, stress is generated at the welded joint when the temperature changes. Prolonged exposure to this stress can lead to plastic deformation at the welded joint, resulting in deformation of the desulfurization tower body. This deformation may manifest as bending, twisting, or localized dents in the tower body. Therefore, to address these issues, an adjustable thermal expansion compensation connection device is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an adjustable thermal expansion compensation connection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable thermal expansion compensation connection device includes a tower body and a steel support frame. A compensation component is provided between the tower body and the steel support frame. The compensation component includes a compensation slide plate, which is disposed on the outside of the tower body and is capable of vertical circular motion. A horizontally adjustable compensation slider is provided on the compensation slide plate. The compensation slider is welded to the tower body as a whole. The compensation slide plate is used to assist in vertical stress compensation at the weld between the compensation slider and the tower body. The horizontal movement of the compensation slider is used for horizontal stress compensation.

[0007] The above technical solution further includes:

[0008] The compensation components are multiple and arranged in a circular array around the tower body. The compensation components are all installed on the steel support. Multiple load-bearing hoops are welded to the outside of the tower body, and the load-bearing hoops are in contact with the steel support.

[0009] The compensation component also includes dovetail grooves on the compensation slide plate, the compensation slider slides relative to the dovetail grooves, an adjustment plate is slidably disposed in the dovetail grooves, and a compensation spring is installed between the adjustment plate and the compensation slider.

[0010] The inner side of the dovetail slide is provided with a compensation adjustment threaded rod that is rotatably connected to the compensation slide plate. The compensation slider is slidably disposed at the end of the compensation adjustment threaded rod. The end of the compensation adjustment threaded rod away from the compensation slider is provided with a thread. The compensation adjustment threaded rod is threadedly connected to the adjustment plate. The adjustment plate slides relative to the dovetail slide.

[0011] The end of the compensation slide away from the compensation slider is fixedly connected to a fixed cylinder. A support plate is installed on the outside of the fixed cylinder. The compensation adjustment threaded rod is rotatably disposed on the inside of the fixed cylinder. An internal hexagonal hole is opened at the end of the compensation adjustment threaded rod near the fixed cylinder.

[0012] The outer circumferential array of the support plate is fixedly connected to multiple second rotating blocks, and a damping rod is rotatably connected inside each of the second rotating blocks.

[0013] A fixing ring is fixedly connected to the side of the steel support near the tower body. Multiple first rotating blocks are fixedly connected to the inner ring sidewall of the fixing ring. The first rotating blocks are arranged in a circular array and their number and position are consistent with those of the second rotating blocks. The first rotating blocks are rotatably connected to the damping rod.

[0014] A damping spring is fitted on the outer side of the damping rod, and the two ends of the damping spring are respectively fixed to the two ends of the damping rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the compensating sliding plate is set on the outside of the tower body and can make vertical circular motion. This design allows the compensating sliding plate to move accordingly when the tower body undergoes vertical thermal expansion or contraction due to temperature changes, thereby absorbing and relieving the stress generated at the weld, and preventing cracking of the weld or deformation of the tower body due to stress accumulation.

[0017] 2. In this invention, when the tower body undergoes thermal expansion or contraction in the horizontal direction, the horizontal position of the compensation slider can be adjusted to adapt to this change, further reducing the stress burden at the weld joints. Simultaneously, the two compensation methods work together to reduce the impact of flue gas on the venturi tube, reduce vibration, and further protect the tower body. Attached Figure Description

[0018] Figure 1 This is a frontal view of the overall structure of the desulfurization tower in this utility model;

[0019] Figure 2 This is a top view of the desulfurization tower in this utility model;

[0020] Figure 3 This is a diagram showing the installation location of the compensation component in the utility model.

[0021] Figure 4 This is a schematic diagram of the overall structure of an adjustable thermal expansion compensation connection device proposed in this utility model.

[0022] Figure 5 This is a partial structural schematic diagram of the present invention;

[0023] Figure 6 This is a rear top view of the compensation component in this utility model;

[0024] Figure 7 This is a top-down view of the compensation component in this utility model.

[0025] In the diagram: 1. Tower body; 2. Steel support frame; 3. Fixing ring; 30. Damping spring; 31. Damping rod; 32. Compensating slider; 33. Compensating slide plate; 34. Dovetail groove; 35. Compensating spring; 36. Compensating adjusting threaded rod; 37. Adjusting plate; 38. Fixing cylinder; 310. Hexagonal socket; 311. Support plate; 312. First rotating block; 313. Second rotating block; 5. Load-bearing hoop. Detailed Implementation

[0026] 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.

[0027] Example

[0028] like Figures 1-4 As shown, the present invention proposes an adjustable thermal expansion compensation connection device, including a tower body 1 and a steel support 2. A compensation component is provided between the tower body 1 and the steel support 2. The compensation component includes a compensation slide plate 33, which is located on the outside of the tower body 1 and can perform vertical circular motion. A horizontally adjustable compensation slider 32 is provided on the compensation slide plate 33. The compensation slider 32 is welded to the tower body 1 as a whole. The compensation slide plate 33 is used to help compensate for the stress in the vertical direction at the weld between the compensation slider 32 and the tower body 1. The compensation slider 32 moves horizontally to compensate for the stress in the horizontal direction.

[0029] Furthermore, during the circular motion of the compensation slide plate 33, it also drives the compensation slider 32 to perform a synchronous circular motion. The compensation slider 32 can slide vertically on the compensation slide plate 33. When the weld between the tower body 1 and the compensation slider 32 expands, the direction of this expansion is not unique. At this time, the compensation slider 32 will move accordingly to absorb and alleviate the thermal expansion stress in the horizontal direction, preventing the weld from being damaged due to excessive stress. Moreover, the compensation slide plate 33 can perform a corresponding circular motion with the expansion or contraction of the tower body 1. This motion mode allows the relative position between the compensation slide plate 33 and the tower body 1 to be dynamically adjusted, thereby effectively absorbing and alleviating the vertical stress caused by thermal expansion, and avoiding stress accumulation at the weld, which could lead to cracking or tower deformation.

[0030] There are multiple compensation components, which are distributed in a circular array around the tower body 1. All compensation components are installed on the steel support 2. Multiple load-bearing hoops 5 are welded to the outside of the tower body 1, and the load-bearing hoops 5 are in contact with the steel support 2.

[0031] The compensation component also includes dovetail grooves 34 on each of the compensation slide plates 33, the compensation slider 32 slides relative to the dovetail grooves 34, and an adjustment plate 37 is slidably arranged in the dovetail grooves 34. A compensation spring 35 is installed between the adjustment plate 37 and the compensation slider 32.

[0032] The inner side of the dovetail slide 34 is provided with a compensation adjustment threaded rod 36 that is rotatably connected to the compensation slide plate 33. The compensation slider 32 is slidably disposed at the end of the compensation adjustment threaded rod 36. The end of the compensation adjustment threaded rod 36 away from the compensation slider 32 is provided with a thread. The compensation adjustment threaded rod 36 is threadedly connected to the adjustment plate 37. The adjustment plate 37 slides relative to the dovetail slide 34.

[0033] The end of the compensation slide plate 33 away from the compensation slider 32 is fixedly connected to a fixed cylinder 38. A support plate 311 is installed on the outside of the fixed cylinder 38. The compensation adjustment threaded rod 36 is rotatably set on the inside of the fixed cylinder 38. An internal hexagonal hole 310 is opened at the end of the compensation adjustment threaded rod 36 near the fixed cylinder 38.

[0034] Furthermore, multiple compensation components are arranged in a circular array around the tower body 1 and are all mounted on the steel support 2. This layout allows the tower body 1 to achieve effective thermal expansion compensation in all directions. Each compensation component has a dovetail groove 34 on its compensation slide plate 33. The compensation slider 32 slides relative to the dovetail groove 34, and this sliding engagement provides the basis for the horizontal movement of the compensation slider 32. An adjusting plate 37 is also slidably installed in the dovetail groove 34. A compensation spring 35 is installed between the adjusting plate 37 and the compensation slider 32. The compensation spring 35 acts as a buffer and preload, allowing the compensation slider 32 to move more stably in the horizontal direction and helping the compensation slider 32 to reset after the thermal expansion stress is relieved.

[0035] Furthermore, the end of the compensation adjusting threaded rod 36 near the fixed cylinder 38 has an internal hexagonal hole 310. The compensation adjusting threaded rod 36 can be easily rotated using an internal hexagonal tool, thereby adjusting the horizontal position of the compensation slider 32. When the horizontal position of the compensation slider 32 needs adjustment, rotating the compensation adjusting threaded rod 36 causes the adjusting plate 37 to slide within the dovetail groove 34 due to the threaded connection, thus pushing the compensation slider 32 to move horizontally. This design allows the horizontal position of the compensation slider 32 to be flexibly adjusted according to actual thermal expansion conditions, achieving more precise thermal expansion compensation.

[0036] Furthermore, when the tower body 1 expands or contracts due to temperature changes, the compensation slide plate 33 will perform a vertical circular motion to absorb the vertical thermal expansion stress. Simultaneously, the compensation slider 32 will move horizontally to absorb the horizontal thermal expansion stress. The compensation spring 35 will compress or stretch according to changes in thermal expansion stress, playing a buffering and adjusting role. When it is necessary to adjust the compensation effect, the horizontal position of the compensation slider 32 can be changed by rotating the compensation adjustment threaded rod 36, thereby achieving precise control of thermal expansion compensation. This design allows the adjustable thermal expansion compensation connection device to adapt to the thermal expansion requirements under different operating conditions, improving the flexibility and stability of the connection between the desulfurization tower and the steel support.

[0037] Multiple second rotating blocks 313 are fixedly connected to the outer circumferential array of the support plate 311, and a damping rod 31 is rotatably connected inside the second rotating block 313;

[0038] A fixing ring 3 is fixedly connected to the side of the steel support 2 near the tower body 1. Multiple first rotating blocks 312 are fixedly connected to the inner ring sidewall of the fixing ring 3. The first rotating blocks 312 are arranged in a circular array and their number and position relationship is consistent with that of the second rotating blocks 313. The first rotating blocks 312 are rotatably connected to the damping rod 31.

[0039] A damping spring 30 is sleeved on the outside of the damping rod 31, and the two ends of the damping spring 30 are fixed to the two ends of the damping rod 31 respectively.

[0040] Furthermore, multiple second rotating blocks 313 are fixedly connected to the outer circumferential array of the support plate 311. Each second rotating block 313 is rotatably connected to a damping rod 31. This design allows the damping rod 31 to rotate freely within the second rotating block 313. At the same time, a fixing ring 3 is fixedly connected to the side of the steel support 2 near the tower body 1. Multiple first rotating blocks 312 are fixedly connected to the inner ring sidewall of the fixing ring 3. These first rotating blocks 312 are arranged in a circumferential array, and their number and positional relationship are consistent with the second rotating blocks 313, ensuring that the damping rod 31 can be accurately connected to the first rotating blocks 312.

[0041] Furthermore, the first rotating block 312 and the damping rod 31 are also rotatably connected. This double rotatable connection design allows the damping rod 31 to flexibly adapt to the relative movement between the tower body 1 and the steel support 2 during thermal expansion. When the tower body 1 expands or contracts due to temperature changes, not only will the compensation slide plate 33 and the compensation slider 32 move accordingly to absorb the thermal expansion stress, but the support plate 311 will also move relative to the fixed ring 3 as the tower body 1 moves. During this process, the damping rod 31 can rotate freely between the second rotating block 313 and the first rotating block 312, while providing a stable damping force through the damping spring 30 sleeved on the outside and the damping rod 31 itself.

[0042] Furthermore, the two ends of the damping spring 30 are fixed to the two ends of the damping rod 31, respectively. When the damping rod 31 rotates, the damping spring 30 is compressed or stretched, thereby generating a damping force. This damping force can effectively suppress excessive vibration and swaying of the tower body 1 during thermal expansion, improving the stability and safety of the entire structure.

[0043] Furthermore, in summary, the support plate 311, the second rotating block 313, the damping rod 31, the fixing ring 3, the first rotating block 312, and the damping spring 30 together constitute a stable damping system. This system provides the necessary damping force when the tower body 1 undergoes thermal expansion or contraction, ensuring the stability and safety of the entire structure. Simultaneously, this design allows the adjustable thermal expansion compensation connection device to adapt to the thermal expansion requirements under different operating conditions, exhibiting greater flexibility and reliability.

[0044] The compensation spring 35 uses a 17-7PH spring: wire diameter 30mm, mean diameter 200mm, effective number of coils 8, spring force coefficient approximately 12.8N / mm, and spring force decay rate <8% after 500 thermal cycle tests.

[0045] The damping spring 30 uses a 17-7PH spring: wire diameter 15mm, mean diameter 100mm, effective number of coils 10, theoretical spring force coefficient of about 10.8N / mm, and spring force decay rate <6% after 500 thermal cycle tests.

[0046] In this embodiment, when the tower body 1 undergoes thermal expansion or contraction due to temperature changes, it acts on the compensation slider 32, causing the compensation slider 32 to slide on the compensation slide plate 33. The compensation spring 35 plays a role in buffering and pre-tightening. At the same time, rotating the compensation adjustment threaded rod 36 can drive the adjustment plate 37 to move and cause the compensation spring 35 to contract, thereby adjusting the pre-tightening force of the compensation spring 35. Since the direction of expansion or contraction is not fixed, it can drive the compensation slider 32 to move in a certain vertical direction. The compensation slider 32 drives the compensation slide plate 33 to move synchronously. At the same time, the compensation slide plate 33 drives the support plate 311 to move relative to the fixed ring 3. At this time, the support plate 311 squeezes or compresses some damping springs 30 and damping rods 31, using the damping springs 30 and damping rods 31 to reduce the stress caused by the thermal expansion and contraction of the tower body 1.

[0047] 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. An adjustable thermal expansion compensation connection device, comprising a tower body (1) and a steel support frame (2), characterized in that, A compensation assembly is provided between the tower body (1) and the steel support (2). The compensation assembly includes a compensation slide plate (33). The compensation slide plate (33) is located on the outside of the tower body (1) and can perform circular motion in the vertical direction. A compensation slider (32) with an adjustable horizontal position is provided on the compensation slide plate (33). The compensation slider (32) is welded to the tower body (1) as a whole. The compensation slide plate (33) is used to help compensate for the stress in the vertical direction at the weld between the compensation slider (32) and the tower body (1). The compensation slider (32) moves in the horizontal direction to compensate for the stress in the horizontal direction.

2. The adjustable thermal expansion compensation connection device according to claim 1, characterized in that, The compensation components are multiple and are arranged in a circular array around the tower body (1). The compensation components are all installed on the steel support (2). Multiple load-bearing hoops (5) are welded to the outside of the tower body (1). The load-bearing hoops (5) are in contact with the steel support (2).

3. The adjustable thermal expansion compensation connection device according to claim 2, characterized in that, The compensation component also includes dovetail grooves (34) on each of the compensation slide plates (33), the compensation slider (32) slides relative to the dovetail grooves (34), an adjustment plate (37) is slidably arranged in the dovetail grooves (34), and a compensation spring (35) is installed between the adjustment plate (37) and the compensation slider (32).

4. The adjustable thermal expansion compensation connection device according to claim 3, characterized in that, The dovetail slide (34) is provided with a compensation adjustment threaded rod (36) that is rotatably connected to the compensation slide plate (33). The compensation slider (32) is slidably disposed at the end of the compensation adjustment threaded rod (36). The end of the compensation adjustment threaded rod (36) away from the compensation slider (32) is provided with a thread. The compensation adjustment threaded rod (36) is threadedly connected to the adjustment plate (37). The adjustment plate (37) slides relative to the dovetail slide (34).

5. The adjustable thermal expansion compensation connection device according to claim 4, characterized in that, The end of the compensation slide plate (33) away from the compensation slider (32) is fixedly connected to a fixed cylinder (38). A support plate (311) is installed on the outside of the fixed cylinder (38). The compensation adjustment threaded rod (36) is rotatably disposed on the inside of the fixed cylinder (38). An internal hexagonal hole (310) is opened at the end of the compensation adjustment threaded rod (36) near the fixed cylinder (38).

6. The adjustable thermal expansion compensation connection device according to claim 5, characterized in that, The outer circumferential array of the support plate (311) is fixedly connected to a plurality of second rotating blocks (313), and a damping rod (31) is rotatably connected inside the second rotating block (313).

7. The adjustable thermal expansion compensation connection device according to claim 5, characterized in that, The steel support (2) is fixedly connected to a fixing ring (3) on the side near the tower body (1). Multiple first rotating blocks (312) are fixedly connected to the inner ring sidewall of the fixing ring (3). The first rotating blocks (312) are arranged in a circular array and their number and position relationship is consistent with that of the second rotating blocks (313). The first rotating blocks (312) are rotatably connected to the damping rod (31).

8. The adjustable thermal expansion compensation connection device according to claim 7, characterized in that, A damping spring (30) is sleeved on the outside of the damping rod (31), and the two ends of the damping spring (30) are respectively fixed to the two ends of the damping rod (31).

Images