A fiber filling anchoring structure in an expansion joint of a high-temperature expansion joint

Abstract

The utility model provides a kind of high temperature expansion joint expansion joint inner fiber filler anchoring structure, including the L type fixed plate for being connected with the steel sheet of expansion joint layer, the horizontal plane of L type fixed plate is equipped with long hole slot, fixed bolt is inserted in long hole slot, the lower part of fixed bolt is connected with fiber membrane block mounting plate, the fixed bolt between the upper part of fiber membrane block mounting plate and the lower part of L type fixed plate is connected with the first nut, the top surface of first nut and the bottom surface of L type fixed plate are provided with the first gasket of PVC material.The utility model structure is simple, reasonable in design, can be fixed in expansion joint inner fiber filler quickly, can also adapt to the center line offset of fiber module in use process, so that fiber module anchoring is effective without being pulled to break down module.

Description

Technical Field

[0001] This utility model relates to the field of furnace maintenance technology, specifically a fiber filler anchoring structure for expansion joints in high-temperature expansion joints. Background Technology

[0002] In the furnace overhaul project of the energy engineering, there is a high-temperature expansion joint (inner diameter 1892mm, length 1500mm) at the top, which is used to connect the thermal reduction furnace and the re-oxidation furnace. There are two expansion joints in the high-temperature expansion joint, and the high-temperature resistant fiber blankets filled in the expansion joints are prone to falling off during use.

[0003] The main reason why the fiber blanket filling the expansion joint is prone to falling off is that it is not anchored. It relies primarily on being compressed during installation, with the friction generated by its expansion and the refractory material on both sides keeping it in place. During use, the width of the expansion joint decreases as the temperature rises (absorbing the high-temperature expansion from both sides of the expansion joint) and increases as the temperature drops. If the temperature remains consistently high, the width of the expansion joint remains narrow, keeping the fiber blanket compressed and thus preventing it from falling off. However, in actual production, furnaces cannot operate at high temperatures indefinitely. Often, for various reasons, production is paused and the furnace cooled down, causing the expansion joint to widen. This loosens the fiber blanket, and after several cycles of high and low temperatures, the fiber blanket becomes increasingly loose, eventually falling off. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model provides a fiber filler anchoring structure for the expansion joint of a high-temperature expansion joint, which can adapt to the centerline deviation of the fiber module during use, so that the fiber module is effectively anchored and will not be damaged.

[0005] The technical solution provided by this utility model is as follows: a fiber filler anchoring structure for expansion joints in high-temperature expansion joints, including an L-shaped fixing plate for connecting to a layer of steel plate in the expansion joint. The L-shaped fixing plate has an elongated slot on its transverse surface. A fixing bolt is inserted into the elongated slot. A fiber membrane block mounting plate is connected to the lower part of the fixing bolt. A first nut is connected to the fixing bolt between the upper part of the fiber membrane block mounting plate and the lower part of the L-shaped fixing plate. A first gasket made of PVC material is provided between the top surface of the first nut and the bottom surface of the L-shaped fixing plate.

[0006] Furthermore, the vertical surface of the L-shaped fixing plate is welded to a layer of steel plate for the expansion joint.

[0007] Furthermore, a second washer is provided between the top surface of the L-shaped fixing plate and the fixing bolt.

[0008] Furthermore, a second nut is connected to the fixing bolt located at the lower part of the fiber membrane block mounting plate.

[0009] Furthermore, the inner fiber module is anchored to the lower part of the L-shaped fixing plate by the fiber membrane block mounting plate, and the outer fiber blanket is filled between the inner fiber module and the steel plates on both sides of the expansion joint.

[0010] Furthermore, the L-shaped fixing plate is an L-shaped flat steel, and the material of the second gasket is 310S.

[0011] Furthermore, the length of the elongated groove is 35-45mm.

[0012] This utility model has a simple structure and is easy to use. It can quickly fix the fiber filler in the expansion joint, and at the same time, it can adapt to the centerline deviation of the fiber module during use, so that the fiber module is effectively anchored and will not be pulled to break, and prevent the fiber module from falling off due to temperature. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded view of the present invention;

[0015] Figure 3 This is a schematic diagram of the inner fiber module structure;

[0016] Figure 4 This is a schematic diagram of the structure of this utility model in use;

[0017] Figure 5 This is a diagram showing the changes of this utility model during use;

[0018] In the figure: 1—L-shaped fixing plate, 101—long hole groove, 2—fixing bolt, 3—fiber membrane block mounting plate, 4—first nut, 5—first washer, 6—second washer, 7—second nut, 8—inner fiber module, 9—outer fiber blanket. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "front," "rear," "upper," and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0022] like Figure 1-4 The high-temperature expansion joint expansion joint fiber filler anchoring structure shown includes an L-shaped fixing plate 1, which is an L-shaped flat steel welded to a steel plate with a smaller thermal expansion. The L-shaped fixing plate 1 has a long slot 101 with a length of 40mm on its transverse surface. A fixing bolt 2 is inserted into the long slot 101. A fiber membrane block mounting plate 3 is connected to the lower part of the fixing bolt 2. A first nut 4 is connected to the fixing bolt 2 between the upper part of the fiber membrane block mounting plate 3 and the lower part of the L-shaped fixing plate 1. A first gasket 5 made of PVC material is provided between the top surface of the first nut 4 and the bottom surface of the L-shaped fixing plate 1.

[0023] A second washer 6 is provided between the top surface of the L-shaped fixing plate 1 and the fixing bolt 2. The second washer 6 is made of 310S material. A second nut 7 is connected to the fixing bolt 2 located at the lower part of the fiber membrane block mounting plate 3.

[0024] The inner fiber module 8 is anchored to the lower part of the L-shaped fixing plate 1 via the fiber membrane block mounting plate 3. The outer fiber blanket 9 fills the space between the inner fiber module 8 and the steel plates on both sides of the expansion joint. This invention adjusts the thickness of the two types of fiber blankets used in the original expansion joint; the inner layer, previously filled with a 229mm thick fiber blanket, is now replaced with a 180mm thick fiber module (folded and compressed). See details of the fiber module. Figure 3The outer layer of fiber blanket, originally 114mm thick, was adjusted to 114 + 49 = 163mm. The fiber modules are anchored using metal components. The L-shaped flat steel of the metal components is welded to a steel plate on the side with lower thermal expansion. The fiber modules are anchored using bolts, a first washer, a second washer, and nuts. The fixing bolt 2 is an M10*50 special-shaped bolt, and the first nut 4 and the second nut 7 are M10 nuts.

[0025] By designing the first gasket 5 to be made of PVC material, during use, as the temperature rises, the first gasket 5 will soften (or even carbonize and vaporize), thereby loosening the nut tightened during installation and the L-shaped flat steel. This allows the bolt and the L-shaped flat steel to slide freely to accommodate the centerline offset of the fiber module during use, ensuring effective anchoring of the fiber module and preventing damage to the module.

[0026] The changes in expansion joints during use are as follows: Figure 5 As shown: Under high temperature conditions, the expansion joint experiences different lengths of thermal expansion elongation on the left and right sides—approximately 50mm on the left and approximately 10mm on the right. The width of the expansion joint changes from 220mm in the cold state to approximately 160mm. The centerline of the fiber module shifts 20mm to the right, while the L-shaped flat steel shifts 10mm to the left along with the right-side steel plate, resulting in a displacement of 20 + 10 = 30mm between the bolt and the L-shaped flat steel.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A fiber filler anchoring structure for expansion joints in high-temperature expansion joints, characterized in that, It includes an L-shaped fixing plate (1) for connecting with a steel plate of expansion joint. The L-shaped fixing plate (1) has an elongated slot (101) on its transverse surface. A fixing bolt (2) is inserted into the elongated slot (101). A fiber membrane block mounting plate (3) is connected to the lower part of the fixing bolt (2). A first nut (4) is connected to the fixing bolt (2) between the upper part of the fiber membrane block mounting plate (3) and the lower part of the L-shaped fixing plate (1). A first gasket (5) made of PVC material is provided between the top surface of the first nut (4) and the bottom surface of the L-shaped fixing plate (1).

2. The fiber filler anchoring structure for expansion joints in high-temperature expansion joints according to claim 1, characterized in that, The vertical surface of the L-shaped fixing plate (1) is welded to a layer of steel plate for the expansion joint.

3. The fiber filler anchoring structure in the expansion joint of a high-temperature expansion joint according to claim 1, characterized in that, A second washer (6) is provided between the top surface of the L-shaped fixing plate (1) and the fixing bolt (2).

4. The fiber filler anchoring structure in the expansion joint of a high-temperature expansion joint according to claim 1, characterized in that, A second nut (7) is connected to the fixing bolt (2) located at the lower part of the fiber membrane block mounting plate (3).

5. The fiber filler anchoring structure for expansion joints in high-temperature expansion joints according to claim 1, characterized in that, The inner fiber module (8) is anchored to the lower part of the L-shaped fixing plate (1) by the fiber membrane block mounting plate (3), and the outer fiber blanket (9) is filled between the inner fiber module (8) and the steel plates on both sides of the expansion joint.

6. The fiber filler anchoring structure in the expansion joint of a high-temperature expansion joint according to claim 3, characterized in that, The L-shaped fixing plate (1) is an L-shaped flat steel, and the material of the second gasket (6) is 310S.

7. The fiber filler anchoring structure for the expansion joint of a high-temperature expansion joint according to claim 1, characterized in that, The length of the elongated groove (101) is 35-45 mm.

Images