Kiln smoke tube expansion adjusting device
By coordinating the limiting device and expansion joint in the middle of the kiln smoke pipe, the problem of poor docking of the kiln smoke pipe due to thermal expansion and contraction is solved, high-precision docking and stability are achieved, the risk of air leakage and vibration is reduced, and the service life of the equipment is extended.
Patent Information
- Application Number
- CN202422388476.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Existing kiln smoke pipes expand under high temperatures, resulting in poor docking, air leakage and vibration. In addition, it is difficult to accurately adjust the expansion amount in traditional systems, affecting system stability and safety.
A central limiting device is used to divide the horizontal section of the smoke pipe into two parts, left and right. The expansion joint is used to absorb the expansion, and the horizontal right section of the smoke pipe uses a staggered structure to compensate for the expansion, ensuring the precise docking of the smoke pipe and the kiln outlet pipe. The eccentric docking design reduces stress concentration.
High-precision docking of the smoke pipe and the kiln outlet pipe is achieved, which reduces air leakage and vibration, improves system stability and safety, extends equipment life, and reduces maintenance costs.
Smart Images
Figure CN223342568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic glass furnace auxiliary equipment, in particular to a furnace smoke pipe expansion adjustment device. Background Art
[0002] Electronic glass kilns generally require natural gas heating, which produces waste gas after combustion. At the same time, the melting process of glass batch materials at high temperatures will also produce a certain amount of waste gas. The waste gas in the kiln is transported through the flue to the flue gas treatment system for harmless treatment, and ultimately meets the national environmental protection index requirements.
[0003] Currently, metal smoke pipes are commonly used to connect to kilns to assist in transporting kiln exhaust gas to the flue gas treatment system. The advantages of using high-temperature resistant steel smoke pipes are light weight, small size, and convenient space layout. However, since the temperature of kiln flue gas after cooling is about 600°C, the horizontal section of the smoke pipe expands by more than 50 mm. If it extends to one end, the vertical flue will tilt. If it extends to the other end, it will cause misalignment with the kiln outlet pipe, and in severe cases, it will cause leakage. Utility Model Content
[0004] The purpose of the utility model is to provide a kiln smoke pipe expansion adjustment device to overcome the problems existing in the prior art. The utility model can adjust the expansion of the smoke pipe in the horizontal direction and the docking with the kiln outlet pipe. By utilizing a middle limit device to divide the horizontal section of the smoke pipe into two left and right parts, the fixed end of the horizontal left section of the smoke pipe uses an expansion joint to absorb the expansion, and the free end of the horizontal right section of the smoke pipe uses a staggered structure to compensate for the expansion, thereby realizing hot docking of the smoke pipe and the kiln outlet pipe.
[0005] In order to achieve the above-mentioned purpose, the technical solutions adopted by the present invention are as follows:
[0006] A kiln smoke pipe expansion adjustment device includes a horizontal section smoke pipe with an expansion joint installed on the horizontal section smoke pipe. The horizontal section smoke pipe includes a horizontal left section smoke pipe. The horizontal left section smoke pipe is fixedly connected to a horizontal right section smoke pipe through a middle limiting device. The horizontal left section smoke pipe is connected to a fixed vertical smoke pipe. The horizontal right section smoke pipe is connected to a butt-jointed vertical smoke pipe. The butt-jointed vertical smoke pipe is connected to a kiln outlet pipe.
[0007] Furthermore, the expansion joint is installed at the end of the horizontal left section of the smoke pipe;
[0008] Furthermore, the middle limiting device includes a fixed structural member, and a support frame is installed on the fixed structural member;
[0009] Furthermore, a limiting block is fixed on the support frame;
[0010] Furthermore, the limit block is fixed to the lower part of the horizontal section of the smoke pipe;
[0011] Furthermore, the limit block is fixed to the lower part of the horizontal section of the smoke pipe by welding;
[0012] Furthermore, the butted vertical smoke pipe is connected to the kiln outlet pipe via a peripheral sealing ring;
[0013] Furthermore, the butted vertical smoke pipe and the kiln outlet pipe are staggered structures;
[0014] Furthermore, the butted vertical smoke pipe is eccentrically butted against the kiln outlet pipe;
[0015] Furthermore, the center line of the butted vertical smoke pipe is biased towards the direction of the middle limiting device relative to the center line of the kiln outlet pipe.
[0016] The above technical solution has the following advantages or beneficial effects:
[0017] The utility model provides a kiln smoke pipe expansion adjustment device. By setting a middle limit device, the horizontal section of the smoke pipe is divided into two parts, the left and the right, so that the entire system can accurately adjust the expansion of the smoke pipe in the horizontal direction during high-temperature operation, effectively solving the docking problem caused by thermal expansion and contraction of the smoke pipe in the traditional system, ensuring the hot docking between the smoke pipe and the kiln outlet pipe is accurate, and reducing problems such as air leakage and vibration caused by poor docking; the horizontal left section of the smoke pipe adopts an expansion joint, which can effectively absorb and alleviate the expansion caused by temperature changes and protect the stability of the system structure, while the horizontal right section of the smoke pipe uses a staggered structure design as a free end. The two devices work together to further compensate for the residual expansion, achieving efficient management and control of the smoke pipe expansion and extending the service life of the equipment. By precisely controlling the expansion of the smoke pipe, the device significantly improves the stability and safety of the entire kiln system, reduces the mechanical stress concentration caused by uneven expansion, avoids safety hazards such as pipe cracking and falling off, and provides a more reliable environment for production operations. The device has a reasonable structural design, and the components are tightly connected and easy to disassemble, making the maintenance and installation of the system easier and faster. When the expansion joint needs to be replaced or other repairs need to be performed, they can be completed quickly, reducing maintenance costs and time costs.
[0018] Furthermore, the expansion joint, as a key expansion compensation element, is placed at the end of the horizontal left section of the smoke pipe. It can directly and effectively absorb the expansion of this section of the smoke pipe due to thermal expansion and contraction in a high-temperature environment, ensuring the stability and safety of the smoke pipe when operating at high temperatures, and preventing pipe deformation or damage caused by excessive expansion; the precise installation position of the expansion joint enables the horizontal left section of the smoke pipe to expand in a predetermined direction and measurement, thereby improving the hot docking accuracy between the docking vertical smoke pipe and the kiln outlet pipe. This high-precision docking reduces adverse factors such as leakage and vibration, and ensures the normal operation of the kiln system.
[0019] Furthermore, the fixed structural member serves as the basis of the entire middle limiting device, providing a stable support platform for the subsequent support frame and limit block; the support frame is installed on the fixed structural member to support and fix the limit block, ensuring that the limit block can accurately act on the horizontal section of the smoke pipe. The support frame is designed with sufficient strength and rigidity to withstand the expansion force and other mechanical stresses of the smoke pipe at high temperature.
[0020] Furthermore, the limit block is fixed on the support frame and is located at the lower part of the horizontal section of the smoke pipe. The limit block controls the horizontal expansion of the smoke pipe through physical restrictions to prevent it from being deformed or displaced due to excessive expansion, which helps to maintain the stability and consistency of the smoke pipe and ensure its accurate docking with the docking vertical smoke pipe and the kiln outlet pipe.
[0021] Furthermore, at high temperatures, the smoke pipe will expand and contract due to heat and cold, generating large thermal stress. The outer sealing ring can absorb and disperse these thermal stresses to a certain extent through its elasticity and toughness, thereby enhancing the stability of the entire connection structure; it can also effectively reduce the leakage of high-temperature flue gas during transmission, which not only improves the thermal efficiency of the system, but also reduces environmental pollution caused by leakage.
[0022] Furthermore, the eccentric docking design enables the docked vertical smoke pipes to expand more naturally in a predetermined direction during thermal expansion and contraction, reducing the stress concentration that may be caused by straight docking, helping to extend the service life of the pipeline and reduce the risk of rupture caused by excessive stress; by deviating the center line of the docked vertical smoke pipes toward the direction of the middle limit device, the horizontal expansion of the smoke pipe can be more accurately controlled to ensure its docking accuracy with the kiln outlet pipe, thereby improving the stability and safety of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a structural diagram of a kiln smoke pipe expansion adjustment device of the utility model;
[0024] Figure 2 This is a structural schematic diagram of a middle limit device of a kiln smoke pipe expansion adjustment device of the utility model;
[0025] Figure 3 This is a schematic diagram of the structure of the butted vertical smoke pipe and the kiln outlet pipe of a kiln smoke pipe expansion adjustment device of the utility model;
[0026] In the figure, 1-horizontal section of the smoke pipe; 1-1-horizontal left section of the smoke pipe; 1-2-horizontal right section of the smoke pipe; 2-fixed vertical smoke pipe; 3-jointing vertical smoke pipe; 4-expansion joint; 5-kiln outlet pipe; 6-fixed structural member; 7-support frame; 8-limiting block; 9-peripheral sealing ring. DETAILED DESCRIPTION
[0027] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0028] In the description of the present invention, it should be understood that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally located component. When a component is considered to be "disposed on" another component, it may be directly disposed on the other component or there may be a centrally located component.
[0029] In addition, the terms "long", "short", "inside", "outside", etc. that indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention. They do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientation structure, and should not be understood as a limitation of the present invention.
[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0031] Example 1:
[0032] like Figure 1 As shown, the utility model provides a kiln smoke pipe expansion adjustment device, including a horizontal section smoke pipe 1, an expansion joint 4 is installed on the horizontal section smoke pipe 1, the horizontal section smoke pipe 1 includes a horizontal left section smoke pipe 1-1, the horizontal left section smoke pipe 1-1 is fixedly connected to a horizontal right section smoke pipe 1-2 through a middle limit device, the horizontal left section smoke pipe 1-1 is connected to a fixed vertical smoke pipe 2, the horizontal right section smoke pipe 1-2 is connected to a docking vertical smoke pipe 3, and the docking vertical smoke pipe 3 is connected to a kiln outlet pipe 5;
[0033] Preferably, the expansion joint 4 is installed at the end of the horizontal left section of the smoke pipe 1-1.
[0034] like Figure 2As shown, the middle limiting device includes a fixed structure 6, a support frame 7 is installed on the fixed structure 6, a limiting block 8 is fixed on the support frame 7, and the limiting block 8 is fixed to the lower part of the horizontal section smoke pipe 1 by welding.
[0035] like Figure 3 As shown, the butted vertical smoke pipe 3 is connected to the kiln outlet pipe 5 through the outer sealing ring 9. The butted vertical smoke pipe 3 is eccentrically butted with the kiln outlet pipe 5. The center line of the butted vertical smoke pipe 3 is biased toward the direction of the middle limit device relative to the center line of the kiln outlet pipe 5.
[0036] Example 2:
[0037] like Figure 1 As shown, the utility model provides a kiln smoke pipe expansion adjustment device, including a horizontal section smoke pipe 1, on which an expansion joint 4 is installed. The expansion joint 4 can effectively absorb and alleviate the expansion caused by temperature changes, thereby protecting the stability of the system structure; the horizontal section smoke pipe 1 includes a horizontal left section smoke pipe 1-1, which is fixedly connected to a horizontal right section smoke pipe 1-2 through a middle limiting device, and the horizontal left section smoke pipe 1-1 is connected to a fixed vertical smoke pipe 2, which is a fixed end for absorbing the expansion amount, and the horizontal right section smoke pipe 1-2 is connected to a docking vertical smoke pipe 3. The horizontal right section smoke pipe 1-2 utilizes a staggered structure design as a free end, which is further used to compensate for the residual expansion. The two work together to achieve efficient management and control of smoke pipe expansion, thereby extending the service life of the equipment; the docking vertical smoke pipe 3 is connected to the kiln outlet pipe 5;
[0038] Preferably, the smoke pipe is a steel smoke pipe;
[0039] Preferably, the expansion joint 4 is installed at the end of the horizontal left section of the smoke pipe 1-1 to absorb the horizontal expansion of the horizontal left section of the smoke pipe 1-1; when in the heating stage, the horizontal left section of the smoke pipe 1-1 can only expand to the left, compressing the expansion joint 4 to prevent the horizontal section from causing the fixed vertical smoke pipe 2 to be supported;
[0040] Preferably, at 600° C., the expansion amount of the left section of the smoke pipe 1 - 1 at the absorption level is about 30 mm.
[0041] like Figure 2As shown, the middle limiting device includes a fixed structure 6, a support frame 7 is installed on the fixed structure 6, and a limiting block 8 is fixed on the support frame 7 to limit the expansion of the horizontal left section smoke pipe 1-1 to the right. The limiting block 8 is fixed to the lower part of the horizontal section smoke pipe 1 to prevent it from being deformed or shifted due to excessive expansion, which helps to maintain the stability and consistency of the smoke pipe and ensure its accurate docking with the docking vertical smoke pipe 3 and the kiln outlet pipe 5; by providing the middle limiting device, the horizontal section smoke pipe 1 is divided into left and right parts, so that the entire system can accurately adjust the expansion of the smoke pipe in the horizontal direction during high-temperature operation, effectively solving the docking problem caused by thermal expansion and contraction of the smoke pipe in the traditional system, ensuring that the hot docking between the smoke pipe and the kiln outlet pipe 5 is accurate, and reducing problems such as leakage and vibration caused by poor docking;
[0042] Preferably, the limiting block 8 is fixed to the lower portion of the horizontal section of the smoke pipe 1 by welding.
[0043] like Figure 3 As shown, the butted vertical smoke pipe 3 is connected to the kiln outlet pipe 5 through the outer sealing ring 9. The butted vertical smoke pipe 3 and the kiln outlet pipe 5 are eccentrically butted. The eccentric butt joint design enables the butted vertical smoke pipe 3 to expand more naturally along the predetermined direction during thermal expansion and contraction, reducing the stress concentration phenomenon that may be caused by straight butt joint, which helps to extend the service life of the pipeline and reduce the risk of rupture caused by excessive stress. The center line of the butt joint vertical smoke pipe 3 is offset from the center line of the kiln outlet pipe 5 toward the direction of the middle limit device, and the eccentricity between the butt joint vertical smoke pipe 3 and the kiln outlet pipe 5 is about 20 mm. This can more accurately control the expansion of the smoke pipe in the horizontal direction, ensure the butt joint accuracy with the kiln outlet pipe, and thus improve the stability and safety of the entire system. When the temperature rise and expansion are completed, the center line of the butt joint vertical smoke pipe 3 basically coincides with the center line of the kiln outlet pipe 5, and the gap between the outer sealing ring 9 and the steel flue is sealed, completing the adjustment process of the steel flue in the hot state.
[0044] Preferably, the expansion at 600° C. is about 20 mm.
[0045] The structure and working principle of the utility model are further described below:
[0046] The object of the present invention is to provide a kiln flue pipe expansion adjustment device. When using the device, before heating, the center line of the docking vertical flue 3 is deviated from the center line of the kiln outlet pipe 5 in the direction of the middle limit device, and the eccentricity between the vertical flue 3 and the kiln outlet pipe 5 is about 20 mm; during the heating stage, the horizontal left section flue 1-1 expands to the left, compressing the expansion joint 4 to avoid the horizontal section expansion causing the fixed vertical flue 2 to be supported, and the expansion of the horizontal left section flue 1-1 is absorbed by about 30 mm at 600°C; the horizontal right section flue 1-2 expands to the right, and the expansion of the horizontal right section flue 1-2 is released by about 20 mm at 600°C; when the heating and expansion are completed, the center line of the docking vertical flue 3 basically coincides with the center line of the kiln outlet pipe 5, the gap between the outer sealing ring 9 and the steel flue is sealed, and the adjustment process of the steel flue in the hot state is completed.
[0047] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A kiln smoke pipe expansion adjustment device, characterized in that: The invention comprises a horizontal section smoke pipe (1), an expansion joint (4) is installed on the horizontal section smoke pipe (1), the horizontal section smoke pipe (1) comprises a horizontal left section smoke pipe (1-1), the horizontal left section smoke pipe (1-1) is fixedly connected to a horizontal right section smoke pipe (1-2) through a middle limit device, the horizontal left section smoke pipe (1-1) is connected to a fixed vertical smoke pipe (2), the horizontal right section smoke pipe (1-2) is connected to a butt-jointed vertical smoke pipe (3), and the butt-jointed vertical smoke pipe (3) is connected to a kiln outlet pipe (5).
2. The kiln smoke pipe expansion adjustment device according to claim 1, characterized in that: The expansion joint (4) is installed at the end of the horizontal left section smoke pipe (1-1).
3. The kiln smoke pipe expansion adjustment device according to claim 1, characterized in that: The middle limiting device comprises a fixed structural member (6), and a support frame (7) is mounted on the fixed structural member (6).
4. The kiln smoke pipe expansion adjustment device according to claim 3, characterized in that: A limiting block (8) is fixed on the support frame (7).
5. The kiln smoke pipe expansion adjustment device according to claim 4, characterized in that: The limiting block (8) is fixed to the lower part of the horizontal section smoke pipe (1).
6. The kiln smoke pipe expansion adjustment device according to claim 5, characterized in that: The limiting block (8) is fixed to the lower part of the horizontal section smoke pipe (1) by welding.
7. The kiln smoke pipe expansion adjustment device according to claim 1, characterized in that: The butted vertical smoke pipe (3) is connected to the kiln outlet pipe (5) via a peripheral sealing ring (9).
8. The kiln smoke pipe expansion adjustment device according to claim 1, characterized in that: The butted vertical smoke pipe (3) and the kiln outlet pipe (5) are of a staggered structure.
9. The kiln smoke pipe expansion adjustment device according to claim 8, characterized in that: The butted vertical smoke pipe (3) is eccentrically butted against the kiln outlet pipe (5).
10. The kiln smoke pipe expansion adjustment device according to claim 9, characterized in that: The center line of the butted vertical smoke pipe (3) is offset toward the direction of the middle limiting device relative to the center line of the kiln outlet pipe (5).