Corrosion-resistant flame arrester suitable for heat accumulating type oxidation incinerator
By incorporating an alloy compensation ring and a cone angle design in the flame arrester of a regenerative thermal oxidation incinerator, the problem of gap expansion caused by high-temperature corrosion and deformation of the flame arrester element was solved, achieving corrosion resistance and efficient airflow guidance of the flame arrester.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-07
AI Technical Summary
Conventional stainless steel flame arrestor elements are prone to intergranular corrosion and creep deformation under long-term high temperatures in regenerative oxidation incinerators, leading to widening gaps and flame arrestor failure.
An alloy compensation ring is set between the inlet layer, transition layer and outlet layer. The shape memory alloy automatically compensates for the gap at high temperature, and the airflow impact pressure is reduced by the design of the hole cone angle from large to small.
Automatic gap compensation at high temperatures maintains flame arresting effect, reduces airflow impact pressure, reduces particulate matter deposition, and improves the corrosion resistance of flame arresters.
Smart Images
Figure CN224085874U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pressure transmission pipeline protection equipment, specifically to a corrosion-resistant flame arrester suitable for regenerative oxidation incinerators. Background Technology
[0002] Regenerative thermal oxidizers are core equipment for treating organic waste gas, mainly used to prevent flame backfire to the waste gas collection system and avoid deflagration accidents. Conventional stainless steel flame arrestors are prone to intergranular corrosion and creep deformation under long-term high temperatures, leading to widening gaps and flame arrestor failure. To address this problem, a corrosion-resistant flame arrestor suitable for regenerative thermal oxidizers is proposed. Utility Model Content
[0003] In view of this, the present invention provides a corrosion-resistant flame arrester suitable for regenerative oxidation incinerators. The present invention can automatically compensate for the gaps by setting an alloy compensation ring between the inlet layer, the transition layer and the outlet layer under long-term high temperature, so as to avoid the change of the gap between the layers affecting the flame arrester's flame arresting effect.
[0004] To solve the above-mentioned technical problems, this utility model provides a corrosion-resistant flame arrester suitable for regenerative oxidation incinerators, including a flame arrester body and a flame arresting element installed in the flame arrester body. The flame arresting element includes an inlet layer, a transition layer, and an outlet layer, and an alloy compensation ring is provided between the inlet layer and the transition layer and between the transition layer and the outlet layer.
[0005] The flame arrester body includes an installation sleeve, which includes a cylinder. One end of the cylinder has a bracket inside, and the other end of the cylinder has a clamping frame inside. The inlet layer, transition layer, and outlet layer are fixedly installed between the clamping frame and the bracket. Fasteners are provided between the corresponding clamping frame and the bracket.
[0006] The flame arrester body also includes conical shells fixed at both ends of the cylinder and connecting parts for connecting the two conical shells and the cylinder. Connecting flanges are provided at both ends of the sleeve and on the conical shells.
[0007] The connector includes a double-ended stud that is inserted into the connecting flange at the connection position between the conical shell and the cylindrical body, and the ends of the double-ended stud are provided with multiple fastening nuts.
[0008] The cone angles of the inlet layer, transition layer, and outlet layer are set from largest to smallest.
[0009] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:
[0010] 1. The alloy compensation rings installed between the inlet layer, transition layer and outlet layer automatically compensate for the gaps under long-term high temperature conditions, so as to avoid the changes in the gaps between the layers from affecting the flame arrester's flame arresting effect.
[0011] 2. The cone angles of the inlet, transition, and outlet layers are set from large to small, which, together with the conical end caps, greatly reduces the impact pressure of the airflow. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a corrosion-resistant flame arrester suitable for a regenerative oxidation incinerator according to the present invention.
[0013] Figure 2 This is a cross-sectional schematic diagram of the present invention;
[0014] Figure 3 This is an enlarged schematic diagram of structure A of this utility model.
[0015] Explanation of reference numerals in the attached figures:
[0016] 1. Flame arrester body; 11. Mounting sleeve; 111. Cylinder; 112. Bracket; 113. Clamping bracket; 114. Fastener; 12. Conical shell; 13. Connecting flange; 14. Connecting piece; 141. Double-ended stud; 142. Fastening nut; 2. Flame arresting element; 21. Inlet layer; 22. Transition layer; 23. Outlet layer; 24. Alloy compensating ring. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0018] The effect of this utility model solution is as follows: Figure 1-3 As shown: It includes a flame arrester body 1 and a flame arresting element 2 installed in the flame arrester body 1. The flame arresting element 2 includes an inlet layer 21, a transition layer 22, and an outlet layer 23. Alloy compensation rings 24 are provided between the inlet layer 21 and the transition layer and between the transition layer 22 and the outlet layer.
[0019] Alloy compensation rings 24 are respectively embedded between the inlet layer 21 and the transition layer 22, and between the transition layer and the outlet layer 23. The material is a shape memory alloy, which can automatically expand to compensate for the gap between the layers when the temperature is high. In addition, the inlet layer 21 is a 60° cone angle + 0.1mm corrugated gap, the transition layer 22 is a 0° cone angle + 0.05mm sintered metal fiber felt, and the outlet layer 23 is a 10° cone angle + 0.02mm laser-drilled plate. The main body of the structure is made of 904L stainless steel, and each cone surface is provided with a streamlined guide groove, so that when the gas passes through, the airflow is guided to form a vortex, which greatly reduces the local pressure and blows off some particles, reducing particle deposition.
[0020] like Figure 1 , 2 As shown, the flame arrester body 1 includes an installation sleeve 11, which includes a cylinder 111. A bracket 112 is provided inside one end of the cylinder 111, and a clamping frame 113 is provided inside the other end of the cylinder 111. The inlet layer 21, the transition layer 22, and the outlet layer 23 are fixedly installed between the clamping frame 113 and the bracket 112. Fasteners 114 are provided between the clamping frame 113 and the bracket 112. The flame arrester body 1 also includes conical shells 12 fixed at both ends of the cylinder 111 and connecting pieces 14 for connecting the two conical shells 12 and the cylinder 111. Connecting flanges 13 are provided at both ends of the sleeve and on the conical shells 12.
[0021] like Figure 1 As shown, the cylindrical body 111 and the conical shell 12 fixed at both ends are both forged and connected and fixed by the connector 14. The contact surface should have a wedge groove for auxiliary sealing.
[0022] like Figure 1 , 2 As shown, the connector 14 includes a double-ended stud 141 that is inserted into the connecting flange 13 at the connection position between the conical shell 12 and the cylindrical body 111. The ends of the double-ended stud 141 are provided with multiple fastening nuts 142. Both ends of the double-ended stud 141 are provided with a set of positive and negative threads respectively. Thus, when the fastening nuts 142 are installed and fixed, they can be tightened simultaneously on both the side of the connecting flange 13 of the cylindrical body 111 and the side of the connecting flange 13 of the conical shell 12, which greatly improves the safety of installation.
[0023] like Figure 2 , 3 As shown, the cone angles of the inlet layer 21, transition layer 22, and outlet layer 23 are set from large to small, which, together with the conical end cap, greatly reduces the impact pressure of the airflow.
[0024] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 according to the specific circumstances.
[0025] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A corrosion-resistant flame arrester suitable for regenerative oxidation incinerators, characterized in that: It includes a flame arrester body (1) and a flame arresting element (2) installed in the flame arrester body (1). The flame arresting element (2) includes an inlet layer (21), a transition layer (22), and an outlet layer (23). Alloy compensation rings (24) are provided between the inlet layer (21) and the transition layer and between the transition layer (22) and the outlet layer.
2. The corrosion-resistant flame arrester for a regenerative thermal oxidizer as described in claim 1, characterized in that: The flame arrester body (1) includes an installation sleeve (11), the installation sleeve (11) includes a cylinder (111), a bracket (112) is provided inside one end of the cylinder (111), and a clamping frame (113) is provided inside the other end of the cylinder (111). The inlet layer (21), the transition layer (22) and the outlet layer (23) are fixedly installed between the clamping frame (113) and the bracket (112), and fasteners (114) are provided between the clamping frame (113) and the bracket (112).
3. A corrosion-resistant flame arrester suitable for regenerative oxidation incinerators as described in claim 2, characterized in that: The flame arrester body (1) also includes conical shells (12) fixed at both ends of the cylinder (111) and connecting pieces (14) for connecting the two conical shells (12) and the cylinder (111). Correspondingly, connecting flanges (13) are provided on both ends of the sleeve and on the conical shells (12).
4. A corrosion-resistant flame arrester suitable for regenerative oxidation incinerators as described in claim 3, characterized in that: The connector (14) includes a double-ended stud (141) inserted on the connecting flange (13) at the connection position between the conical shell (12) and the cylindrical body (111), and the end of the double-ended stud (141) is provided with a plurality of fastening nuts (142).
5. A corrosion-resistant flame arrester suitable for regenerative oxidation incinerators as described in claim 4, characterized in that: The cone angles of the inlet layer (21), the transition layer (22), and the outlet layer (23) are set from large to small.