Refractory insulating brick capable of eliminating thermal stress
By inserting sealing inserts and fixed sealing inserts on the refractory brick body, and setting telescopic plug grooves and tenons, the cracking and collapse of refractory bricks due to thermal stress in high-temperature environments is solved, better integrity and sealing performance are achieved, and the insulation effect is improved.
Patent Information
- Application Number
- CN202421190926.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The bricks crack and collapse due to temperature fluctuations and uneven thermal loads in high-temperature environments, which affects the service life and safe and stable operation.
A refractory insulation brick is designed, with sealing inserts embedded on the upper side of the brick body, sealing inserts fixed on the lower side, and telescopic plug grooves and tenons are provided at both ends. The cross-sectional shapes of the sealing plug plates and grooves, telescopic plug grooves and tenons are consistent, allowing relative movement to release thermal stress, and enhancing the integrity and sealing performance of the brick body.
Effectively eliminate thermal stress, avoid cracking and collapse of bricks, enhance the integrity and sealing performance of bricks, and improve thermal insulation effect.
Smart Images
Figure CN222964408U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a refractory brick for high-temperature building materials, in particular to a refractory insulation brick that can eliminate thermal stress caused by temperature fluctuations and temperature changes. Background Art
[0002] Refractory bricks are a kind of building materials used in high-temperature environments. These refractory insulation bricks are diverse and important in high-temperature industrial applications. From blast furnaces to various industrial furnaces, refractory bricks play a key role in various high-temperature environments.
[0003] Refractory bricks are not only heat-resistant and insulating, but also face the thermal shock effects of rapid temperature changes and uneven thermal loads. The thermal stress caused by the thermal expansion and contraction due to such temperature changes and uneven thermal loads has a powerful destructive effect. For example, the walls of the coke oven bridge pipes and the gas transmission collecting pipes in the heat recovery system of a heat recovery coke oven are both made of refractory bricks or insulation bricks laid with mortar, and each bridge pipe and the collecting pipe are also connected in parallel by a fixed connection method. Under the action of mechanical stress and thermal stress, it is inevitable that the masonry joints of the bricks will be widened, the bricks will crack and separate, and finally the pipe wall will collapse, directly affecting the safe and stable operation and service life of the coke oven. Summary of the Utility Model
[0004] Aiming at the above problems existing in the prior art, the technical problem to be solved by the utility model is to provide a refractory insulation brick that can effectively eliminate thermal stress caused by temperature imbalance.
[0005] To solve the above technical problems, the refractory insulation brick of the utility model that can eliminate thermal stress includes a refractory brick body. A sealing insert block is embedded on the upper side of the brick body of the refractory brick body, and a sealing groove is arranged on the sealing insert block; a sealing plug board is fixedly arranged on the lower side of the brick body of the refractory brick body, and the cross-sectional shapes of the sealing plug board and the sealing groove are matched; a telescopic insertion groove is arranged at one end of the brick body of the refractory brick body, and a telescopic insertion tenon is arranged at the other end of the brick body of the refractory brick body, and the cross-sectional shapes of the telescopic insertion groove and the telescopic insertion tenon are matched.
[0006] Preferably, the sealing groove and the telescopic insertion groove are trapezoidal grooves, and the telescopic insertion tenon and the sealing plug board are trapezoidal cross-sections.
[0007] Preferably, the refractory brick body is an erosion-resistant mullite refractory insulation brick, the sealing insert block is made of graphite material, and the sealing plug board is made of high-temperature stainless steel.
[0008] After adopting the above structure, since a sealing groove is provided on the sealing insert on the upper side of the brick body of the refractory brick body, and a sealing plug plate is fixedly provided on the lower side thereof, the cross-sectional shapes of the sealing plug plate and the sealing groove are consistent, so that when the upper and lower side surfaces of two adjacent stacked bricks are fitted together, the sealing plug plates on the opposite side surfaces are inserted into the sealing groove. On the one hand, when inconsistent expansion and contraction occur between the stacked bricks due to temperature fluctuations, the sealing plug plates can move vertically or horizontally relative to each other in the sealing groove, so that the thermal stress is released; at the same time, the stacked bricks are meshed and connected with each other by the sealing plug plates and the sealing grooves, which not only makes the brick bodies mesh closely, strengthens the connection, and improves the integrity, but also the plug-in structure of the sealing plug plates and the sealing grooves effectively blocks the leakage, penetration and communication of high-temperature airflow, and has a more ideal thermal insulation effect. At the same time, the two ends of the refractory brick body are respectively provided with telescopic mortises and telescopic slots with matching cross-sectional shapes. Such mortises and slots can not only release vertical and horizontal thermal stresses, but also the plug-in structure makes the brick bodies mesh tightly, strengthens the integrity, and effectively blocks the leakage of high-temperature airflow. Therefore, the refractory insulation bricks of the utility model can form a flexible masonry structure to ensure the vertical and horizontal relative movement between bricks, which not only effectively releases the thermal stress caused by temperature changes, avoids the cracking and collapse of the masonry body caused by thermal stress, but also makes the masonry body have good integrity and excellent sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The refractory heat-insulating brick capable of eliminating thermal stress of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0010] Figure 1 It is a front structural schematic diagram of a specific implementation mode of the refractory heat-insulating brick capable of eliminating thermal stress of the utility model;
[0011] Figure 2 yes Figure 1 A top view of
[0012] Figure 3 yes Figure 1 A-A section structure diagram;
[0013] Figure 4 yes Figure 1 Schematic diagram of vertical stacking structure of refractory insulation bricks;
[0014] Figure 5 yes Figure 4 Top view of the .
[0015] In the figure, 1 is a refractory brick body, 2 is a sealing insert, 3 is a sealing groove, 4 is a sealing plug plate, 5 is a telescopic plug groove, and 6 is a telescopic plug tenon. DETAILED DESCRIPTION
[0016] likeFigure 1 , Figure 2 and Figure 3 The refractory heat-insulating bricks shown in the figure can eliminate thermal stress, and the brick body 1 of the refractory brick body is generally a regular hexahedron. A sealing insert 2 is embedded on the upper side of the brick body of the refractory brick body 1, and a sealing plug plate 4 is fixedly arranged on the lower side of the brick body of the refractory brick body 1. A sealing groove 3 is arranged on the sealing insert 2, and the sealing groove 3 and the sealing plug plate 4 are on the same plane. The trapezoidal cross-sectional shapes of the sealing groove 3 and the sealing plug plate 4 are consistent, so that two adjacent bricks can be plugged into each other.
[0017] The two ends of the refractory brick body 1 are respectively provided with a telescopic insertion groove 5 and a telescopic insertion tenon 6, and the trapezoidal cross-sectional shapes of the telescopic insertion groove 5 and the telescopic insertion tenon 6 are consistent, so that two adjacent bricks can be inserted into each other.
[0018] The refractory brick body 1 is an erosion-resistant mullite refractory insulation brick, the sealing insert 2 is made of graphite material, which has good thermal shock resistance and lubricity, which is very beneficial to the masonry body, and the sealing insert 4 is made of high-temperature stainless steel.
[0019] like Figure 4 , Figure 5 As shown, two bricks adjacent to each other in the upper and lower parts are overlapped with each other through corresponding sealing plug plates 4 and sealing grooves 3, and two bricks adjacent to each other in the left and right parts are plugged with each other through corresponding telescopic plug grooves 5 and telescopic plug tenons 6.
[0020] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that technicians in the relevant technical field can understand and use the utility model well. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.
Claims
1. A refractory heat-insulating brick capable of eliminating thermal stress, comprising a refractory brick body (1), characterized in that: A sealing insert (2) is embedded on the upper side of the brick body of the refractory brick body (1), and a sealing groove (3) is provided on the sealing insert (2); a sealing plug plate (4) is fixedly provided on the lower side of the brick body of the refractory brick body (1), and the cross-sectional shapes of the sealing plug plate (4) and the sealing groove (3) are consistent; a telescopic insertion groove (5) is provided at one end of the brick body of the refractory brick body (1), and a telescopic insertion tenon (6) is provided at the other end of the brick body of the refractory brick body (1), and the cross-sectional shapes of the telescopic insertion groove (5) and the telescopic insertion tenon (6) are consistent.
2. The refractory insulation brick capable of eliminating thermal stress according to claim 1, characterized in that: The sealing groove (3) and the telescopic insertion groove (5) are trapezoidal grooves, and the telescopic insertion tenon (6) and the sealing plug plate (4) are trapezoidal cross-sections.
3. The refractory insulation brick capable of eliminating thermal stress according to claim 1, characterized in that: The refractory brick body (1) is an anti-corrosion mullite refractory heat-insulating brick, the sealing insert (2) is made of graphite material, and the sealing insert (4) is made of high-temperature stainless steel.