A tube panel assembly and tube clamp for preventing fin cracking

Abstract

This application discloses a tube panel assembly and its tube clamp for preventing fin cracking. The tube clamp includes a left side plate, a right side plate, a connector, and a pin. The left and right sides are arranged opposite each other and sandwich the tube panel body. The left and right sides are connected by a connector and hung on the target upper pipe. The two ends of the pin are installed on the left and right sides and are located below the target lower pipe. The pin is also provided with an eccentric profile. The user controls the rotation of the pin so that the eccentric profile supports the target lower pipe, thereby lifting the target lower pipe upward, reducing the force on the fins, and thus preventing the fin weld from cracking at the end.

Description

Technical Field

[0001] The present application relates to the technical field of boilers, and more specifically, to a tube clamp. In addition, the present application also relates to a tube panel assembly comprising the tube clamp for preventing fin cracking. Background Art

[0002] The boiler heating surface tube panel is the main equipment of the boiler. It absorbs the heat generated by the combustion of fuel in the boiler and transfers it to the internal medium. The internal medium evaporates due to the heat, forming high-temperature and high-pressure steam. It is generally made of metal tubes that are bent, welded, and assembled to form a sheet-like serpentine tube group, which is called the heating surface tube panel.

[0003] At present, some of the heating surface serpentine tubes of the boiler of my country's thermal power generating units are connected by fins 2, such as Figures 1 to 3 As shown, the current tube panel assembly includes a tube panel body and fins 2. The tube panel body includes multiple pipe fittings 1. Adjacent pipe fittings 1 are welded and fixed to the fins 2 to form a top-down hanging structure, and are suspended on the boiler top steel frame through a hanging plate 4.

[0004] In actual operation, over the long term, weld 3, subjected to alternating stresses from tube panel expansion and swaying, as well as the weight of the tube panels, cracked. This strained the high-temperature, high-pressure heating surface tubes, causing leaks and unplanned unit downtime, resulting in severe equipment damage and economic and power losses. Furthermore, cracking weld 3 caused the tube panels to sink, rendering their suspension mechanism ineffective.

[0005] In summary, how to prevent weld cracking and tube panel body sinking is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a pipe clamp that can support the pipe fittings on the tube panel body, solve the problem of stress on the fin welds, prevent weld cracking, avoid strain on high-temperature and high-pressure pipe fittings, avoid leakage, and prevent unplanned unit shutdowns. At the same time, it solves the problem of the tube panel assembly not being able to hang and sinking after the hanging weld cracks. Another purpose of this application is to provide a tube panel assembly that prevents fin cracking, including the above-mentioned pipe clamp.

[0007] In order to achieve the above objectives, this application provides the following technical solutions:

[0008] A pipe clamp, comprising:

[0009] A side panel assembly, the side panel assembly comprising a left side panel located on the left side of the tube panel body and a right side panel located on the right side of the tube panel body, the upper ends of the left side panel and the upper ends of the right side panel being connected by a connector and hung on the target upper pipe fitting of the tube panel body, the left side panel and the right side panel being respectively provided with a left axis hole and a right axis hole in corresponding positions;

[0010] A pin shaft, the left end and the right end of the pin shaft are respectively arranged in the left shaft hole and the right shaft hole, and the side wall of the pin shaft includes an eccentric profile for abutting against the lower side wall of the target lower pipe fitting so as to lift the target lower pipe fitting upward when the pin shaft rotates. The target lower pipe fitting is the pipe fitting in the tube panel body located below the target upper pipe fitting.

[0011] Optionally, the connecting member is a U-shaped structural member, and the left side plate, the right side plate, and the U-shaped structural member are an integrated structural member.

[0012] Optionally, the upper end of the left side plate and the upper end of the right side plate are respectively provided with a left hanging shaft hole and a right hanging shaft hole with corresponding positions, and the connecting member is a hanging rod, and the left end and the right end of the hanging rod are respectively provided in the left hanging shaft hole and the right hanging shaft hole.

[0013] Optionally, when at least two left shaft holes are provided on the left side plate, all the left shaft holes on the same left side plate are spaced apart from top to bottom; the right shaft hole corresponds one-to-one to the left shaft hole, and the pin shaft is connected one-to-one to the left shaft hole.

[0014] Optionally, the eccentric profile includes an arcuate curved surface and an axial plane, and a cross section of the eccentric profile perpendicular to the axial direction of the pin shaft is semicircular.

[0015] Optionally, a chamfer is provided at the intersection of the arcuate surface and the axial plane.

[0016] Optionally, a radially protruding limit seat is provided at the right end of the pin shaft, a radially inwardly contracted positioning column is provided at the left end of the pin shaft, and the eccentric profile is provided between the limit seat and the positioning column.

[0017] Optionally, a truncated cone with a circular cross-section and cooperating with the right shaft hole is provided between the eccentric contour and the limiting seat, and the eccentric contour extends from the right end face of the positioning column to the left end face of the truncated cone.

[0018] A tube panel assembly for preventing fin cracking comprises a tube panel body, wherein the tube panel body comprises a plurality of spaced-apart tubes, adjacent tubes being fixed by fin welding, and the above-mentioned tube clamp.

[0019] Optionally, when the number of the pipe fittings in the tube panel body is less than or equal to 5, each of the pipe clamps includes one connecting piece and one pin shaft, and each of the pipe clamps is cooperated and connected with two adjacent pipe fittings; when the number of the pipe fittings in the tube panel body is more than 5, each of the pipe clamps includes one connecting piece and two pin shafts, and each of the pipe clamps is cooperated and connected with three adjacent pipe fittings.

[0020] Through the above solution, the beneficial effects of the pipe clamp provided by this application are:

[0021] The pipe clamp provided in this application includes a left plate, a right plate, a connector, and a pin. During use, the left and right plates are positioned opposite each other, sandwiching the tube panel body. The left and right plates are connected by the connector and hung on the target upper pipe fitting. The pin is mounted on both the left and right plates and positioned below the target lower pipe fitting. The pin is also provided with an eccentric profile. The user controls the pin's rotation so that the eccentric profile supports the target lower pipe fitting above it, thereby lifting the target lower pipe fitting upward.

[0022] This pipe clamp features an eccentric pin that ensures it fits into the gap between the pipes. Once the pin is inserted, use a dedicated wrench to rotate it in one direction. This causes the pin to contact the pipe, applying an upward tensioning force. The rotated pin is then welded to the left and right plates. This upward force exerts on the pipe, removing stress from the weld tips of the fins, thus preventing cracking of the fin welds.

[0023] In addition, it should be understood that the tube panel assembly for preventing fin cracking provided in the present application includes the above-mentioned tube clamp, and therefore, the tube panel assembly for preventing fin cracking provided in the present application also has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0025] Figure 1 Schematic diagram of the structure of a tube panel assembly in the prior art; a single line collinear with the axis of the tube is used to represent the tube;

[0026] Figure 2 for Figure 1 A side cross-sectional view of the tube panel assembly shown;

[0027] Figure 3 for Figure 2 A partial enlarged view of the

[0028] Figure 4 A schematic structural diagram of a tube panel assembly provided in an embodiment of the present application;

[0029] Figure 5 A schematic structural diagram of another tube panel assembly provided in an embodiment of the present application;

[0030] Figure 6It is a structural schematic diagram of a pipe clamp in a first working state;

[0031] Figure 7 for Figure 6 The structural diagram of the pipe clamp shown is in the second working state;

[0032] Figure 8 A schematic structural diagram of a pin provided in an embodiment of the present application;

[0033] Figure 9 A schematic structural diagram of another pin provided in an embodiment of the present application;

[0034] Figure 10 for Figure 9 A front view of the pin shown;

[0035] Figure 11 for Figure 9 A side view of the pin shown;

[0036] Figure 12 A front view of a side panel assembly provided in an embodiment of the present application;

[0037] Figure 13 for Figure 12 a side view of the side panel assembly shown;

[0038] Figure 14 A front view of another side panel assembly provided in an embodiment of the present application;

[0039] Figure 15 for Figure 14 a side view of the side panel assembly shown;

[0040] Figure 16 A schematic structural diagram of a right side panel provided in an embodiment of the present application;

[0041] Figure 17 A method provided in the embodiment of the present application Figure 16 Schematic diagram of the structure of the left plate matched with the right plate shown.

[0042] Figures 1 to 17 The accompanying drawings are:

[0043] Pipe fitting 1; fin 2; weld 3; hanger plate 4; pipe clamp 5, left side plate 51, left axis hole 511, left hanging axis hole 512, right side plate 52, right axis hole 521, right hanging axis hole 522, pin 53, positioning column 531, eccentric profile 532, frustum 533, limit seat 534, chamfer 535, U-shaped structural member 54, hanger 55.

[0044] Each of the pipe fittings 1a to 1j and 1p to 1t in the figure represents a pipe fitting, and each of 5a to 5h represents a pipe clamp. English letters are only used to distinguish the differences in the positions of the pipe fittings and pipe clamps. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] Please refer to Figures 4 to 17 The tube panel assembly for preventing fin cracking provided in the present application may include: a tube panel body, fins 2, and tube clamps 5.

[0047] Specifically, the tube panel body includes a plurality of spaced-apart tubes 1 , each tube 1 is formed in a rectangular or other shape, and the tubes 1 are generally distributed in sequence from the inside to the outside in a plane, and adjacent tubes 1 are fixed by welding through fins 2 .

[0048] It should be noted that the target upper pipe and target lower pipe in this application are both pipes 1 in the pipe panel body. "Up" and "Down" are only used to distinguish the positional relationship of the two pipes 1 in the vertical direction. Among any two pipes 1, the one with a relatively higher position is the target upper pipe, and the one with a relatively lower position is the target lower pipe. Figure 4 Taking the structure shown as an example, among pipe fittings 1p and 1q, pipe fitting 1p is the target upper pipe fitting, and pipe fitting 1q is the target lower pipe fitting; while among pipe fittings 1q, 1r and 1s, pipe fitting 1q is the target upper pipe fitting, and pipe fittings 1r and 1s are both target lower pipe fittings.

[0049] The pipe clamp 5 provided in the present application includes a side plate assembly, a connecting piece, and a pin 53.

[0050] The side panel assembly consists of a left side panel 51 and a right side panel 52. During use, the two panels are positioned opposite each other, with the left side panel 51 located on the left side of the tube panel body and the right side panel 52 located on the right side. The upper ends of the left and right panels 51 and 52 are connected by connectors and suspended from the target upper pipe fittings of the tube panel body. The left and right panels 51 and 52 are respectively provided with corresponding left and right axle holes 511 and 521.

[0051] The connector is used to connect the upper end of the left side plate 51 and the upper end of the right side plate 52, thereby achieving the hanging of the side plate assembly on the target upper pipe.

[0052] There are many options for the structure of the connector:

[0053] For example, for the topmost tube fittings 1 (such as tube fittings 1p and 1a) of the tube panel body, the preferred connector is a U-shaped structural member 54, with the left side panel 51, right side panel 52, and U-shaped structural member 54 being an integrated structure. Specifically, the left side panel 51, right side panel 52, and U-shaped structural member 54 form a single unit. During on-site installation, the integrated structural member can be directly suspended from the tube fitting 1 without positioning the left and right side panels 51, 52 on either side. The pin 53 can then be installed and, after rotating the pin 53 into position, welded to the integrated structural member.

[0054] Connectors of this type of structure are suitable for the pipe clamps 5 (such as pipe clamps 5a and 5e) arranged at the uppermost part of the tube panel body. Compared with the connectors, left side plates 51 and right side plates 52 of the split structure, the integrated structural parts have the advantages of convenient and quick installation. However, for the pipe fittings 1 inside the tube panel body (such as pipe fittings 1c to pipe fittings 1j, pipe fittings 1q to pipe fittings 1t), the integrated structural parts may not be able to enter the installation position and cannot be installed due to position limitations. Therefore, it is preferred to use this structure on the uppermost pipe fittings 1.

[0055] For another example, regarding the tube fittings 1 within the tube panel body, preferably, the upper ends of the left side panel 51 and the right side panel 52 are respectively provided with corresponding left and right hanging axis holes 512 and 522. The connecting member is a hanging rod 55, and the left and right ends of the hanging rod 55 are respectively disposed in the left and right hanging axis holes 512 and 522. Specifically, in this case, the left side panel 51, the right side panel 52, and the hanging rod 55 are a split structure. In addition, in order to avoid the complexity of the structure of the pipe clamp 5 and reduce the error rate during large-scale installation, it is preferred that the suspension rod 55 and the supporting pin 53 have the same structure, that is, the specifications, shape and structure of the suspension rod 55 and the pin 53 remain the same. Accordingly, the aperture of the left hanging shaft hole 512 is consistent with that of the left shaft hole 511, and the aperture of the right hanging shaft hole 522 is consistent with that of the right shaft hole 521, so that the suspension rod 55 and the pin 53 can be used interchangeably, thereby reducing the complexity and procurement cost during large-scale processing, and helping to reduce the inventory of spare parts in the warehouse.

[0056] The pin 53 is installed in the left axial hole 511 of the left plate 51 and the right axial hole 521 of the right plate 52. The side wall of the pin 53 includes an eccentric profile 532. The eccentric profile 532 is used to abut against the lower side wall of the target lower pipe so as to lift the target lower pipe upward when the pin 53 rotates. There are multiple options for the structure of the pin 53:

[0057] For example, in one embodiment of a specific structure of the pin 53, the cross-section of the eccentric profile 532 is semicircular. This cross-section refers to a cross-section perpendicular to the axial direction of the pin 53. The semicircular here refers not only to half a circle but also to large or small semicircles. In this case, the eccentric profile 532 includes an arcuate surface and an axial plane. The edge of the arcuate surface has a relatively distributed arcuate left end and an arcuate right end, and also has two relatively distributed straight sides. The axial plane is rectangular, with its edge having a relatively distributed left end and a relatively distributed right end, and also has two relatively distributed sides. The two sides, the left end, and the right end are connected end to end to form a rectangular structure. The side of the arcuate surface contacts the side of the axial plane. The eccentric profile 532 can extend from the left end face to the right end face of the pin 53, in which case the apertures of the left and right shaft holes 511 and 521 can be consistent.

[0058] During the on-site trial installation of a sample of this pin 53, it was discovered that the left and right panels 51, 52 were difficult to position. After installation, the left and right panels 51, 52 were tilted up and down, not parallel, and the force applied to them could not be directed vertically upward. Furthermore, installation was difficult. When inserting the pin 53 into the left and right axle holes 511, 521, if the construction workers did not hold it properly, the left and right panels 51, 52, and the pin 53 could easily fall off, resulting in low installation efficiency. To address these issues, this pin 53 was modified specifically.

[0059] For another example, in an embodiment of the specific structure of the pin shaft 53, the right end of the pin shaft 53 is provided with a radially protruding limit seat 534, the left end of the pin shaft 53 is provided with a radially inward positioning column 531, and the eccentric profile 532 is provided between the limit seat 534 and the positioning column 531.

[0060] This type of pin 53 is designed with two shoulders: a first shoulder between the positioning column 531 and the eccentric profile 532, and a second shoulder on the left end face of the limit seat 534, which are used to position the left and right panels 51 and 52. During installation, the pin 53 passes through the right shaft hole 521 and is positioned at the second shoulder. The left panel 51 is then installed and positioned at the first shoulder. This ensures that the left and right panels 51 and 52 are parallel and that the pin 53 is not deflected after rotation. The shoulders also serve as a positioning function. During on-site installation, positioning is not required; the shoulders of the pin 53 are used directly for positioning. During installation, the pin 53, the left and right panels 51 and 52 are not likely to fall off, thereby improving installation efficiency.

[0061] Accordingly, in order to match the pin shaft 53 of this structure, the left side plate 51 and the right side plate 52 also need to be improved accordingly, that is, the aperture of the left shaft hole 511 is smaller than the aperture of the right shaft hole 521 .

[0062] For another example, in another embodiment of the pin 53's specific structure, a chamfer 535 is provided at the intersection of the curved surface and the axial plane. This intersection refers to the location where the side edge of the curved surface contacts the side edge of the axial plane. Specifically, if the side edge is not rounded, the sharp corners of the pin 53 would become stuck with the pipe 1 during rotation, making rotation difficult. Furthermore, after the pin 53 rotates, its sharp corners would directly contact the pipe 1, causing damage to the pipe 1. Therefore, the rounded corners of this pin 53 ensure smoother rotation without getting stuck, while also preventing damage to the pipe 1.

[0063] For another example, in another embodiment of the pin 53's specific structure, a circular-cross-sectioned truncated cone 533 is provided between the eccentric profile 532 and the stopper 534, and engages with the right shaft hole 521. The eccentric profile 532 extends from the right end surface of the positioning post 531 to the left end surface of the truncated cone 533. This pin 53 improves its stability during rotation by engaging the truncated cone 533 with the right shaft hole 521.

[0064] Theoretically, there's no limit to the number of pins 53 a single pipe clamp 5 can have. Pins 53 correspond one-to-one to the target pipes a single pipe clamp 5 needs to lift, so the number of pins 53 should be consistent with the number of target pipes a single pipe clamp 5 needs to lift. When a single pipe clamp 5 has at least two pins 53, the number of pins 53, left axial holes 511, and right axial holes 521 should remain consistent: one right axial hole 521, one pin 53, and one left axial hole 511 should be connected. Furthermore, all pins 53 in a single pipe clamp 5 should be spaced from top to bottom, and correspondingly, all left axial holes 511 on the same left side plate 51 should be spaced from top to bottom. In practical applications, it's preferred that a single pipe clamp 5 have one or two pins 53.

[0065] The way the pipe clamp 5 cooperates with the pipe panel body is as follows:

[0066] When the number of pipe fittings 1 in the tube panel body is less than or equal to 5, Figure 4 As shown, it is recommended to use a "one-to-one" type pipe clamp 5, which is more convenient and quick to install. In this case, each pipe clamp 5 includes a connecting piece and a pin 53. Each pipe clamp 5 is connected to two adjacent pipe fittings 1. In addition, of the two adjacent pipe fittings 1, the upper pipe fitting 1 is the target upper pipe fitting for the pipe clamp 5 to hang, and the lower pipe fitting 1 is the target lower pipe fitting to be lifted by the pipe clamp 5.

[0067] When the number of pipe fittings 1 in the tube panel body is more than 5, Figure 5As shown, to reduce the number of pipe clamps 5, a "one-supporting-two" type pipe clamp 5 is recommended. In this case, each pipe clamp 5 includes a connector and two pins 53. Each pipe clamp 5 is connected to three adjacent pipe fittings 1. Furthermore, of the three adjacent pipe fittings 1, the topmost pipe fitting 1 is the target upper pipe fitting, while the middle pipe fitting 1 and the bottommost pipe fitting 1 are the target lower pipe fittings supported by the pipe clamp 5.

[0068] by Figure 5 For example, to solve the crack problem of the fins 2 of 9 pipe fittings 1, a "one-supporting-two" type pipe clamp 5 is used. Each pipe clamp 5 cooperates with 3 adjacent pipe fittings 1. In order to achieve the purpose of no stress or less stress on the fins 2 of each pipe fitting 1, each pipe clamp 5 needs to overlap one pipe fitting 1. More specifically, the pipe clamp 5a is hung on the pipe fitting 1a and supports the pipe fittings 1b and 1c; the pipe clamp 5b is hung on the pipe fitting 1c and supports the pipe fittings 1d and 1e; the pipe clamp 5c is hung on the pipe fitting 1e and supports the pipe fittings 1f and 1g; the pipe clamp 5d is hung on the pipe fitting 1g and supports the pipe fittings 1h and 1i; the pipe clamp 5 transfers the gravity of the pipe fitting 1 to the hanging plate 4 in turn, and the hanging plate 4 transfers the weight of the tube panel body to the boiler steel frame through the hanging rod, thereby reducing the force on the end of the pipe fitting 1 connected to the fin 2, preventing the end of the fin 2 from cracking and pulling the pipe fitting 1, and avoiding unplanned shutdown of the unit.

[0069] Furthermore, it is preferred that the tube clamps 5 be provided on both sides of the fin 2. For example, four tube clamps 5 are used on one side, for a total of eight tube clamps 5 on both sides. Placing the tube clamps 5 on both sides as close as possible to both ends of the horizontal section of the pipe fitting 1 can maximize the force exerted by the tube clamps 5 on the weld seam 3 of the fin 2 under the same upward tension after the pin 53 rotates, further preventing cracks in the fin 2. The tube clamps 5 on both sides should also be arranged symmetrically to ensure uniform force on the fins 2 on both sides.

[0070] As can be seen from the above embodiments, the pipe clamp 5 provided in this application has the following beneficial effects:

[0071] Advantage 1: The weight of the pipe fittings 1 is sequentially transferred to the top hanger plate 4 through the pipe clamps 5, sharing the stress on the fins 2. This reduces or eliminates stress on the fins 2, resolving the problem of cracking at the ends of the fins 2 on the boiler heating surface fin 2-connected tube panels, damaging the boiler pipe fittings 1, causing leakage and unplanned unit shutdowns.

[0072] Advantage 2: It is particularly suitable for the effective elimination and prevention of cracks in the tube panel fins 2 which are made of high-quality material (such as SA213-T91, etc.) and need to be heat treated after welding, but have special structures and cannot be heat treated on site.

[0073] Advantage 3: No modification is required to the pipe fitting 1, and the safety of the boiler heating surface is not affected.

[0074] Advantage 4: Designed with a positioning shoulder, on-site modification and installation are quick and convenient, the operation is simple and saves time and effort, which improves work efficiency and reduces labor costs.

[0075] Advantage 5: The bending radius of the U-shaped structure 54 and the length of the pin 53 can be adjusted to accommodate different outer diameters of pipes 1. For tube panel bodies with varying spacing between pipes 1, the hole spacing of the side panels can be adjusted to accommodate these. By adjusting the hole spacing, pin 53 diameter, and pin 53 length, the system can be adapted to different pipes 1, thus providing a wide range of applications.

[0076] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0077] The above is a detailed introduction to the tube panel assembly and tube clamp for preventing fin cracking provided by the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A pipe clamp (5), characterized in that: include: A side panel assembly, the side panel assembly comprising a left side panel (51) located on the left side of the tube panel body and a right side panel (52) located on the right side of the tube panel body, the upper end of the left side panel (51) and the upper end of the right side panel (52) being connected via a connector and hung on a target upper tube of the tube panel body, the left side panel (51) and the right side panel (52) being respectively provided with a left axis hole (511) and a right axis hole (521) at corresponding positions; A pin shaft (53), wherein the left end and the right end of the pin shaft (53) are respectively arranged in the left shaft hole (511) and the right shaft hole (521), and the side wall of the pin shaft (53) includes an eccentric profile (532) for abutting against the lower side wall of a target lower pipe fitting so as to lift the target lower pipe fitting upward when the pin shaft (53) rotates, and the target lower pipe fitting is a pipe fitting (1) located below the target upper pipe fitting in the pipe panel body; The eccentric profile (532) includes an arcuate surface and an axial plane, and a cross section of the eccentric profile (532) perpendicular to the axial direction of the pin shaft (53) is semicircular; The right end of the pin shaft (53) is provided with a radially protruding limit seat (534), the left end of the pin shaft (53) is provided with a radially inward-contracted positioning column (531), and the eccentric profile (532) is provided between the limit seat (534) and the positioning column (531).

2. The pipe clamp (5) according to claim 1, characterized in that The connecting member is a U-shaped structural member (54), and the left side plate (51), the right side plate (52), and the U-shaped structural member (54) are integrated structural members.

3. The pipe clamp (5) according to claim 1, characterized in that The upper end of the left side plate (51) and the upper end of the right side plate (52) are respectively provided with a left hanging shaft hole (512) and a right hanging shaft hole (522) corresponding to the position; the connecting member is a hanging rod (55); the left end and the right end of the hanging rod (55) are respectively provided in the left hanging shaft hole (512) and the right hanging shaft hole (522).

4. The pipe clamp (5) according to claim 1, characterized in that When at least two left shaft holes (511) are provided on the left side plate (51), all the left shaft holes (511) on the same left side plate (51) are spaced apart from each other from top to bottom; the right shaft hole (521) corresponds to the left shaft hole (511) one-to-one, and the pin shaft (53) is connected to the left shaft hole (511) one-to-one.

5. The pipe clamp (5) according to claim 4, characterized in that: A chamfer (535) is provided at the intersection of the arcuate surface and the axial plane.

6. The pipe clamp (5) according to claim 5, characterized in that: A truncated cone (533) with a circular cross section and matching the right shaft hole (521) is provided between the eccentric profile (532) and the limiting seat (534). The eccentric profile (532) extends from the right end face of the positioning column (531) to the left end face of the truncated cone (533).

7. A tube panel assembly for preventing fin cracking, comprising a tube panel body, wherein the tube panel body comprises a plurality of spaced-apart tubes (1), and adjacent tubes (1) are fixed by welding through fins (2), characterized in that: It also includes the pipe clamp (5) according to any one of claims 1 to 6.

8. The tube panel assembly according to claim 7, characterized in that: When the number of the pipe fittings (1) of the tube panel body is less than or equal to 5, each of the pipe clamps (5) includes one of the connecting pieces and one of the pins (53), and each of the pipe clamps (5) is connected in cooperation with two adjacent pipe fittings (1); when the number of the pipe fittings (1) of the tube panel body is more than 5, each of the pipe clamps (5) includes one of the connecting pieces and two of the pins (53), and each of the pipe clamps (5) is connected in cooperation with three adjacent pipe fittings (1).

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