Tube panel clamping plate structure and fixing device

Abstract

The utility model discloses a tube panel clamping plate structure and a fixing device. The utility model belongs to the technical field of boiler heat exchange tube panel fixing devices. A pipe panel clamping plate structure comprises a comb-shaped clamping plate with a plurality of limiting open grooves, the multiple limiting open grooves are arranged at equal intervals, the comb-shaped clamping plate is arranged perpendicular to the axis direction of a pipeline of a pipe panel, and the inner walls of the three sides in the limiting open grooves are each provided with a convex part used for limiting the shaking range of the pipeline. The fixing device comprises the pipe panel clamping plate structure and further comprises a plurality of sets of pipe clamps arranged on the pipe panel pipeline in a sliding and sleeving mode, any pipe clamp is provided with a plurality of limiting openings used for being sleeved with the pipeline, and a limiting rod is arranged between any two adjacent pipe clamps. The utility model aims to provide the tube panel clamping plate structure and the fixing device, so that the risk of deformation of the tube panel is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of boiler heat exchanger tube panel fixing device, specifically relating to a tube panel clamping plate structure and fixing device. Background Technology

[0002] In large-capacity, high-parameter supercritical pulverized coal boilers, the deviations on both the flue gas and working fluid sides increase as the boiler load decreases. The wall temperature deviation of the high-temperature stage heating surface also increases. Due to uneven stress in different flue gas flow fields, the tube screen is at risk of deformation. To mitigate deformation, current methods primarily involve using fasteners for fixation. However, overly tight fasteners can affect the thermal expansion of the tubes on the heating surface, increasing the risk of deformation. Conversely, loose fasteners can cause the swaying tubes to come into contact with them to varying degrees, potentially leading to extensive damage or even flattening and deformation of the tubes. Utility Model Content

[0003] To address the problem of pipe damage and deformation caused by irregular oscillation of pipes in a heated surface tube panel, this utility model provides a tube panel clamping plate structure and fixing device.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A pipe screen clamping plate structure includes a comb-shaped clamping plate with multiple limiting opening slots. The multiple limiting opening slots are equally spaced. The comb-shaped clamping plate is arranged perpendicular to the pipe axis of the pipe screen. The inner walls of the three sides of the limiting opening slots are provided with convex parts for limiting the range of pipe sway.

[0006] In this design, the comb-shaped clamp can improve the deformation of the tube screen. At the same time, the setting of the convex part reduces the contact area between the clamp structure and the tube screen pipe, which can reduce the area of ​​the clamp hitting the pipe to a certain extent, prevent the pipe from being dented over a large area, and thus avoid a large number of inward deformation phenomena in the pipe.

[0007] In some technical solutions of this utility model, the above-mentioned comb-shaped card plate has two pieces arranged in parallel with each other, the opening direction of the limiting opening slots of the two comb-shaped card plates is the same, and the two comb-shaped card plates are connected to each other through a top plate, a first baffle, and a second baffle.

[0008] This design enhances the rigidity of the card plate structure and further reduces the deformation of the tube screen caused by external forces.

[0009] In some technical solutions of this utility model, a support plate is provided between any two adjacent limiting opening slots, and the two ends of the support plate are respectively provided on the two comb-shaped card plates.

[0010] The support plate plays a role in stabilizing the overall structure of the card body to a certain extent, further enhancing its corrective effect on tube screen deformation. In some technical solutions of this utility model, the convex part is a round steel bar, and the diameter of the round steel bar is equal to the thickness of the comb-shaped card plate.

[0011] This design reduces the impact area on the pipes.

[0012] In some technical solutions of this utility model, the number of the above-mentioned limiting opening slots does not exceed four.

[0013] This design takes into account the magnetic field effect of the tube screen pipes and avoids the tube screen plate structure being too long, which would affect the installation of other components in that location. It is the optimal choice calculated based on the actual available space.

[0014] A fixing device includes the aforementioned pipe screen clamping plate structure, and further includes multiple sets of pipe clamps that are slidably sleeved on the pipe screen pipe. Each pipe clamp has multiple limiting ports for sleeved pipes, and a limiting rod is provided between any two adjacent pipe clamps.

[0015] This design method adds a limiting rod between the pipe clamps, which can improve the rigidity of the pipe screen against deformation and reduce the probability of pipe deformation.

[0016] In some technical solutions of this utility model, any of the above-mentioned pipe clamps includes a first clamp and a second clamp that can be movably fastened. The first clamp is provided with a plurality of first grooves, and the second clamp is provided with a second groove corresponding to each of the plurality of first grooves. When the first clamp and the second clamp are fastened together, the first groove and the corresponding second groove are connected to form the above-mentioned limiting opening.

[0017] This design allows for quick and easy removal of pipe clamps.

[0018] In some technical solutions of this utility model, the above-mentioned pipe clamp also includes a positioning pin, with one end of the positioning pin passing through the first clamp and the other end passing through the second clamp.

[0019] Using locating pins can make the connection between the first clamp and the second clamp more secure and faster.

[0020] The technical solution of this utility model has at least the following advantages and beneficial effects:

[0021] The clamping structure uses a comb-shaped clamp as the clamping body. A convex part is set on the inner wall of the limiting opening groove of the comb-shaped clamp. While allowing the comb-shaped clamp to slide in the pipeline, it also reduces the contact area between the comb-shaped clamp and the pipeline of the pipe screen. In this way, when the pipeline of the pipe screen shakes and causes deformation, the area of ​​collision damage to the pipeline caused by the comb-shaped clamp is reduced. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a fixing device according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of a tube screen card structure according to an embodiment of the present utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of a partial section along the AA direction;

[0025] Figure 4 for Figure 2 Front view of the comb-shaped card plate;

[0026] Figure 5 This is one of the partial structural schematic diagrams of a fixing device according to an embodiment of the present utility model;

[0027] Figure 6 This is a second schematic diagram of a partial structure of a fixing device according to an embodiment of the present utility model;

[0028] Figure 7 This is the third partial structural schematic diagram of a fixing device according to an embodiment of the present utility model.

[0029] Icons: 1-comb-shaped clamping plate, 2-limiting opening groove, 3-convex part, 4-top plate, 5-tube screen, 6-first baffle, 7-second baffle, 8-support plate, 9-tube clamp, 10-limiting port, 11-limiting rod, 12-first clamping piece, 13-second clamping piece, 14-first groove, 15-second groove, 16-positioning pin, 17-tube screen clamping plate structure, 18-stop block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this utility model, it should be noted that if terms such as "inner" or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "configure," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Example

[0036] Please refer to Figures 1-5 This embodiment provides a pipe screen clamping plate structure, including a comb-shaped clamping plate 1 with multiple limiting opening slots 2. The multiple limiting opening slots 2 are equally spaced. The comb-shaped clamping plate 1 is arranged perpendicular to the pipe axis of the pipe screen 5. The inner walls of the three sides of the limiting opening slots 2 are provided with convex parts 3 for limiting the range of pipe swaying.

[0037] The principle of this tube screen clamping structure is as follows: the convex component 3 is welded to the inner wall of the limiting opening groove 2. Preferably, three convex components 3 are welded to the inner walls of the three sides respectively. The protruding side of the convex component 3 is close to the pipe of the tube screen 5, and the ends of the three convex components 3 abut in sequence. The two convex components 3 on the two sides are arranged relatively parallel. When it is necessary to fix the tube screen 5, N screens are used as a group (assuming that the value of N in this embodiment is 4). Then the height value of one limiting opening groove 2 is sufficient to accommodate four pipes at the same time (each pipe comes from one tube screen 5, and the height value includes the distance between adjacent tube screens 5). In this embodiment, the number of limiting opening grooves 2 is four. The installer clamps the comb-shaped clamping plate 1 on the four layers of tube screen. On the 5th, each limiting opening slot 2 contains four pipes from top to bottom, one pipe per layer of pipe screen 5. When the comb-shaped clamping plate 1 is inserted into the four layers of pipe screen 5 and the boiler starts to work, the contact between the outer side of the swaying pipe on the pipe screen 5 and the comb-shaped clamping plate 1 changes from the current contact between the arc surface and the surface to the contact between the arc surface with a diameter of R and the arc area with a diameter of r (where R is the diameter of the pipe on the pipe screen 5, and r is the diameter of the convex part 3, and the value of R is much greater than the value of r). When the boiler starts to work, the comb-shaped clamping plate 1 can improve the deformation of the pipe screen 5, and due to the setting of the convex part 3, it can reduce the area of ​​the clamping part hitting the pipe to a certain extent, prevent the pipe from being dented in a large area, and thus avoid the large amount of inward deformation of the pipe.

[0038] In a preferred embodiment, the comb-shaped card plate 1 has two pieces arranged in parallel to each other. The limiting opening slots 2 of the two comb-shaped card plates 1 have the same opening direction. The two comb-shaped card plates 1 are connected to each other through a top plate 4, a first baffle 6 and a second baffle 7.

[0039] In the above embodiment, the two comb-shaped clamping plates 1, the first baffle 6 of the top plate 4, and the second baffle 7 are connected by welding, wherein the weld height is preferably 5mm. In this design, the two comb-shaped clamping plates 1 are more stable under the connection of the top plate 4, the first baffle 6, and the second baffle 7, thereby limiting and fixing a certain number of pipes (the number of pipes is determined by the number of limiting opening slots 2. If the number of limiting opening slots 2 is 3, then the number of pipes constrained on each layer of pipe screen 5 is 3) and reducing their deformation caused by external forces.

[0040] In a preferred embodiment, a support plate 8 is provided between any two adjacent limiting opening slots 2, and the two ends of the support plate 8 are respectively provided on the two comb-shaped clamping plates 1.

[0041] In the above embodiment, the support plate 8 plays a role in stabilizing the overall structure of the two comb-shaped clamping plates 1 to a certain extent, further enhancing its corrective effect on the deformation of the tube screen 5. As a preferred embodiment, the convex part 3 is a round steel bar, and the diameter of the round steel bar is equal to the thickness of the comb-shaped clamping plate 1.

[0042] In the above embodiment, the comb-shaped clamping plate 1 and the convex part 3 are connected by welding. The thickness of the comb-shaped clamping plate 1 is the same as the diameter of the round steel, which can support the round steel well to a certain extent, facilitate welding processing, and also ensure that when the pipe of the pipe panel 5 shakes, that is, when the clamping body and the pipe collide and squeeze with great force, the surface in contact with the pipe is always the arc surface, rather than the non-arc surface sinking into the corner of the steel plate behind the pipe, thus reducing the impact on the pipe.

[0043] In a preferred embodiment, the number of the aforementioned limiting opening slots 2 does not exceed four.

[0044] In the above embodiment, the limiting opening slot 2 is preferably three; this design takes into account the magnetic field effect of the pipe 5 and avoids the pipe 5 clamping plate structure being too long and affecting the installation of other components at this position. It is the optimal choice calculated based on the actual usable space.

[0045] like Figure 1 , Figures 6-7 As shown, a fixing device includes the above-mentioned pipe screen clamping plate structure, and also includes multiple sets of pipe clamps 9 that are slidably sleeved on the pipe of the pipe screen 5. Each pipe clamp 9 has multiple limiting ports 10 for sleeved pipes, and a limiting rod 11 is provided between any two adjacent pipe clamps 9.

[0046] The principle of this fixing device: In current technology, the high-temperature reheater tube panel 5 is generally maintained by clamps welded to the pipes in the direction behind the furnace, while it is free in the direction in front of the furnace. However, during boiler operation, airflow disturbances can cause irregular swaying of the tube panel 5 in the direction in front of the furnace, which may lead to rubbing and damage to adjacent pipes. In addition to using a tube panel clamping plate structure, this fixing device introduces pipe clamps 9, eliminating the clamps currently welded to the pipes. The high-temperature reheater tube panel 5 is fixed using pipe clamps 9. The number of limiting ports 10 is preferably four, with four pipes as a group, and one pipe clamp 9 configured for each group. The four pipes are respectively inserted into the corresponding limiting ports 10. When all the pipes are in the limiting ports 10, the clamps are fixed in the same way. After all pipe clamps 9 are installed, slide the pipe clamps 9 to adjust their positions. Limiting rods 11 are installed between adjacent pipe clamps 9 by welding. If there are many pipes in a single pipe panel 5, the pipe panels 5 ending at the end of a single pipe panel 5 can be fixed by welding, or they can be left unconnected. Alternatively, the number of pipe panels 5 can be determined based on the number of pipes in each pipe panel 5. If the number of limiting ports 10 on the pipe clamps 9 is greater than 4, the number of limiting rods 11 between adjacent pipe clamps 9 can be appropriately increased. Adding limiting rods 11 between pipe clamps 9 can improve the rigidity of the pipe panel 5 against deformation and reduce the probability of pipe deformation. It is worth noting that the length of the limiting rods can be changed according to actual needs.

[0047] In a preferred embodiment, any of the above-mentioned pipe clamps 9 includes a first clamp 12 and a second clamp 13 that can be movably fastened. The first clamp 12 is provided with a plurality of first grooves 14, and the second clamp 13 is provided with a second groove 15 corresponding to each of the plurality of first grooves 14. When the first clamp 12 and the second clamp 13 are fastened together, the first grooves 14 and the corresponding second grooves 15 are connected to form the above-mentioned limiting opening 10.

[0048] In the above embodiment, the first clamp 12 and the second clamp 13 are connected by a hinge on one side and snap-fitted on the other side; this design allows for quick disassembly of the pipe clamp 9, making it more convenient.

[0049] In a preferred embodiment, the pipe clamp 9 further includes a positioning pin 16, with one end of the positioning pin 16 passing through the first clamp 12 and the other end passing through the second clamp 13.

[0050] In the above embodiment, the first clamp 12 is provided with a first positioning port, and the second clamp 13 is provided with a second positioning port corresponding to the first positioning port. When the first clamp 12 and the second clamp 13 are engaged, the positioning pin 16 passes through the first positioning port and the second positioning port in sequence. After installation, there are notches on both sides of the clamp. This design allows the clamp to slide on the pipe after installation. In addition, the positioning pin 16 and the pipe clamp 9 can be welded for a more secure secondary connection. The number of positioning pins 16, the number of first positioning ports, and the number of second positioning ports are multiple and correspond one-to-one. Personnel can add or remove them according to the length of the pipe clamp 9 during use. The use of positioning pins 16 can make the connection between the first clamp 12 and the second clamp 13 more secure and faster to a certain extent.

[0051] As a preferred implementation, four stops 18 are spaced apart on the pipe of the pipe screen 5. The four stops 18 are divided into two groups of two. The two stops 18 in each group are located on the same horizontal line. The two groups of stops 18 are located on both sides of the pipe clamp 9, that is, the pipe clamp 9 is located between the two groups of stops 18. The area formed between the two groups of stops 18 is the sliding area of ​​the pipe clamp 9. The four stops 18 are welded to the pipe of the pipe screen 5 and heat-treated together with the pipe. This design can limit the sliding range of the pipe clamp 9 on the pipe of the pipe screen 5.

[0052] In summary, the embodiments of this utility model provide a tube screen clamping plate structure and fixing device, which is provided with multiple tube clamps 9, and adjacent tube clamps 9 are connected and fixed by limiting rods 11. It is simple and convenient, and can increase the stiffness of the tube screen 5 against out-of-plane deformation, and reduce the swing of the tube screen 5 during operation; at the same time, a comb-shaped clip is added to the bottom of the screen to further reduce the risk of deformation of the tube screen 5.

Claims

1. A tube screen clamping plate structure, comprising a comb-shaped clamping plate (1) having multiple limiting opening slots (2), wherein the multiple limiting opening slots (2) are equally spaced, characterized in that, The comb-shaped card plate (1) is set perpendicular to the pipe axis of the pipe screen (5), and the three inner walls of the limiting opening groove (2) are provided with convex parts (3) for limiting the range of pipe sway.

2. The tube screen card structure according to claim 1, characterized in that, The comb-shaped card plate (1) has two pieces arranged in parallel to each other. The limiting opening slots (2) of the two comb-shaped card plates (1) have the same opening direction. The two comb-shaped card plates (1) are connected to each other through the top plate (4), the first baffle (6), and the second baffle (7).

3. The tube screen card structure according to claim 2, characterized in that, A support plate (8) is provided between any two adjacent limiting opening slots (2), and the two ends of the support plate (8) are respectively provided on the two comb-shaped card plates (1).

4. The tube screen card structure according to claim 2, characterized in that, The convex part (3) is a round steel bar, and the diameter of the round steel bar is equal to the thickness of the comb-shaped card plate (1).

5. The tube screen card structure according to any one of claims 1-4, characterized in that, The number of the limiting opening slots (2) shall not exceed four.

6. A fixing device, comprising the pipe screen clamping plate structure as described in any one of claims 1-5, further comprising multiple sets of pipe clamps (9) slidably sleeved on the pipe of the pipe screen (5), wherein each pipe clamp (9) has multiple limiting ports (10) for sleeved pipe, characterized in that, A limiting rod (11) is provided between any two adjacent pipe clamps (9).

7. A fixing device according to claim 6, characterized in that, Any of the pipe clamps (9) includes a first clamp (12) and a second clamp (13) that can be movably engaged. The first clamp (12) is provided with a plurality of first grooves (14), and the second clamp (13) is provided with a second groove (15) corresponding to the plurality of first grooves (14). When the first clamp (12) and the second clamp (13) are engaged, the first groove (14) and the corresponding second groove (15) are joined to form the limiting port (10).

8. A fixing device according to claim 7, characterized in that, The pipe clamp (9) also includes a positioning pin (16), with one end of the positioning pin (16) passing through the first clamp (12) and the other end passing through the second clamp (13).

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