A high-temperature explosion relief device for a regenerative incinerator

Abstract

This utility model discloses a high-temperature explosion relief device for a regenerative thermal ignition (RTI) incinerator, comprising: a shell, wherein a cavity with one open end is formed within the shell; a heat insulation core, which is installed at the opening of the cavity to seal the opening, the opening of the cavity being adapted to the heat insulation core; an explosion relief port, which is formed on the side wall of the shell and communicates with the cavity, and an explosion relief disc is installed at the outlet of the explosion relief port; and a blocking structure, which is installed between the explosion relief disc and the explosion relief port to allow gas to pass through but prevent the heat insulation core from passing through. This high-temperature explosion relief device for an RTI incinerator uses the cavity as a thermal buffer zone to ensure unobstructed airflow during pressure relief, and isolates the high-temperature heat insulation core from the explosion relief disc, further ensuring safety during the explosion relief process with the addition of the blocking structure.

Description

Technical Field

[0001] This utility model relates to a high-temperature explosion relief device for a regenerative incinerator, belonging to the field of environmental protection and safety technology. Background Technology

[0002] In existing technologies, the explosion venting devices for regenerative thermal oxidizers (RTOs) typically mount the explosion venting discs directly or via simple supports near the high-temperature zone. This design has two main drawbacks: First, when the explosion relief disc is exposed to high temperature for a long time, its metal material is prone to creep and annealing, which can lead to inaccurate burst pressure and potential safety risks such as premature bursting or failure to burst when it should. Second, in the event of a venting explosion, the insulation material may fly out as a whole, becoming a high-speed projectile and causing a secondary safety accident.

[0003] It is evident that, in order to effectively isolate high temperatures to protect the explosion relief disc and safely block the heat insulation core, there is an urgent need for a high-temperature explosion relief device for regenerative incinerators. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-temperature explosion relief device for a regenerative incinerator. The cavity serves as a thermal buffer area, which can ensure smooth airflow during pressure relief. Furthermore, the high-temperature insulating core is isolated from the explosion relief plate and a blocking structure is used to further ensure the safety of the explosion relief process.

[0005] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution: A high-temperature explosion relief device for a regenerative incinerator includes: A housing, wherein a cavity with one end open is formed inside the housing; A heat insulation core is installed at the opening of the cavity to seal the opening of the cavity, and the opening of the cavity is adapted to the heat insulation core. An explosion vent is provided on the side wall of the shell, and the explosion vent is connected to the cavity. An explosion vent plate is installed at the outlet of the explosion vent. A blocking structure is installed between the explosion relief disc and the explosion relief port to allow gas to pass through but prevent the heat insulation core from passing through.

[0006] Furthermore, the housing includes an upper housing and a lower housing, which are fixed together by flanges at the lower middle part of the cavity; The heat insulation core is installed on the lower housing, and the explosion vent is located on the upper housing.

[0007] Furthermore, the outer wall of the shell is provided with a thermal insulation layer, which is fixed to the shell by an anchoring assembly.

[0008] Furthermore, the anchoring assembly includes an anchor bolt welded to the outer wall of the shell, a baffle plate sleeved on the anchor bolt and pressed against the outer surface of the insulation layer, and a nut that is threaded to the end of the anchor bolt to press the baffle plate.

[0009] Furthermore, the heat insulation core has a frustum structure that is wider at the top and narrower at the bottom, with the wider end of the heat insulation core facing the shell.

[0010] Furthermore, the blocking structure is fixed to the outside of the housing by a flange.

[0011] Furthermore, the venting disc is fixed to the blocking structure via a flange.

[0012] Furthermore, the blocking structure is a grid-like construction.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The high-temperature explosion relief device for regenerative incinerator provided by this utility model uses the cavity as a thermal buffer area to ensure smooth airflow during depressurization, and isolates the high-temperature insulating core from the explosion relief plate with a blocking structure to further ensure the safety of the explosion relief process. The high-temperature explosion relief device for regenerative incinerator provided by this utility model has a shell consisting of an upper shell and a lower shell. This split structure greatly facilitates the installation, inspection and replacement of internal components, especially the heat insulation core. The high-temperature explosion relief device for regenerative incinerator provided by this utility model has a heat insulation core with a truncated cone structure that is wider at the top and narrower at the bottom. This truncated cone structure utilizes the principle of self-tightening of the inclined plane, which can achieve a better sealing effect under internal pressure. It is also convenient to install and position it from above using the detachable upper and lower shells. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the high-temperature explosion relief device for the regenerative incinerator provided by this utility model; Figure 2 yes Figure 1 The diagram shows the structure of the high-temperature explosion relief device for a regenerative incinerator in the shell-separated state. Figure 3 yes Figure 1 The diagram shows the first state of the high-temperature explosion relief device for a regenerative incinerator under explosion relief conditions. Figure 4 yes Figure 1 The diagram shows the second state of the high-temperature explosion relief device for a regenerative incinerator under explosion relief conditions. Figure 5 yes Figure 1 The diagram shows the third state of the high-temperature explosion venting device for a regenerative incinerator under explosion venting conditions.

[0015] In the figure: 1. Shell; 101. Upper shell; 102. Lower shell; 2. Cavity; 3. Insulation core; 4. Explosion vent; 5. Explosion relief plate; 6. Barrier structure; 7. Insulation layer; 8. Anchoring assembly; 801. Anchor bolt; 802. Baffle plate; 803. Nut. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, 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 based on the specific circumstances. Example 1

[0019] like Figure 1 As shown, this embodiment provides a high-temperature explosion relief device for a regenerative incinerator, comprising: A housing 1, wherein a cavity 2 with one end open is formed inside the housing 1; A heat insulation core 3 is installed at the opening of the cavity 2 to seal the opening of the cavity 2. The opening of the cavity 2 is adapted to the heat insulation core 3. An explosion vent 4 is provided on the side wall of the housing 1. The explosion vent 4 is connected to the cavity 2. An explosion vent plate 5 is installed at the outlet of the explosion vent 4. A blocking structure 6 is installed between the explosion relief plate 5 and the explosion relief port 4 to allow gas to pass through but block the heat insulation core 3 from passing through.

[0020] In the above technical solution, the high-temperature explosion relief device for the regenerative incinerator provided in this embodiment uses the cavity 2 as a thermal buffer area to ensure smooth airflow during depressurization, and isolates the high-temperature insulating core 3 from the explosion relief plate 5 with a blocking structure 6 to further ensure the safety of the explosion relief process. Cavity 2 serves as a critical thermal buffer area, and its cross-sectional area is not less than that of the explosion vent 4 to ensure unobstructed airflow during depressurization. The heat insulation core 3 is used to seal the opening of the cavity 2 and connect to the RTO furnace body. The heat insulation core 3 is made of high-temperature resistant and thermal shock resistant material, and in this embodiment, it is an integral module made of ceramic fiber. Its shape is adapted to the opening of the cavity 2 to ensure good sealing. The main function of the heat insulation core 3 is to seal the furnace chamber and withstand the high temperature of over 800°C inside the furnace during normal operation, and to be pushed out under internal pressure during explosion venting.

[0021] The design of the four lateral openings of the explosion vent separates the explosion vent path from the installation path of the insulation core, forming a structure as follows: Figures 3 to 5 The unique explosion venting channel shown.

[0022] The blocking structure 6 is fixedly installed at the outlet of the explosion vent 4 via a flange connection. In this embodiment, the blocking structure 6 is a grid-type structure, welded together from crisscrossing metal ribs. The opening size of its grid is designed to allow high-pressure gas to pass through smoothly, but is smaller than the minimum external dimensions of the heat insulation core 3, thereby effectively preventing the entire heat insulation core 3 from passing through.

[0023] The explosion relief disc 5 is fixedly installed on the outside of the blocking structure 6 via another flange connection. The burst pressure of the explosion relief disc 5 has been precisely calibrated. Due to the thermal buffer area formed by the cavity 2 and the insulation of the heat insulation core 3, the ambient temperature of the explosion relief disc 5 during normal operation is much lower than the furnace temperature, usually controlled below 200°C. This ensures the stability of the mechanical properties of its metal material and the accurate and reliable burst pressure.

[0024] The working process of this embodiment is as follows: like Figure 1 As shown, under normal operating conditions, the high temperature inside the RTO furnace is isolated by the heat insulation core 3, the temperature inside the cavity 2 is significantly reduced, and the explosion relief plate 5 is in a low-temperature working environment, maintaining a seal.

[0025] like Figure 3 and Figure 4 As shown, under the explosion venting condition, an explosion occurs inside the furnace, causing a sudden increase in pressure. The high-pressure gas and shock wave push the heat insulation core 3 out of its installation position, rush into the cavity 2, and impact outward through the explosion vent 4.

[0026] like Figure 5 As shown, the high-pressure gas first impacts the explosion relief disc 5, causing it to rupture instantly. Subsequently, the heat insulation core 3, which follows closely behind, is effectively blocked by the robust grid-type blocking structure 6 as it flies out of the explosion relief port 4. The heat insulation core 3 is thus completely confined inside the device, thereby avoiding the danger of flying out as a whole and greatly improving safety. Example 2

[0027] The high-temperature explosion venting device for a regenerative incinerator provided in this embodiment differs from the high-temperature explosion venting device for a regenerative incinerator provided in Embodiment 1 in that: like Figure 1 and Figure 2 As shown, the housing 1 includes an upper housing 101 and a lower housing 102, which are fixed together by flanges in the lower middle part of the cavity 2. This split structure greatly facilitates the installation, inspection and replacement of internal components, especially the heat insulation core 3.

[0028] The heat insulation core 3 is installed on the lower housing 102, and the explosion vent 4 is located on the upper housing 101.

[0029] The outer wall of the housing 1 is provided with a thermal insulation layer 7, which is fixed to the housing 1 by an anchoring component 8.

[0030] like Figure 1 and Figure 2 As shown, the anchoring assembly 8 includes an anchor bolt 801 welded to the outer wall of the shell 1, a baffle 802 sleeved on the anchor bolt 801 and pressed against the outer surface of the insulation layer 7, and a nut 803 threadedly engaged with the end of the anchor bolt 801 to press the baffle 802. This mechanical fixing method is firm and reliable, has good vibration resistance, and can effectively prevent the insulation layer 7 from loosening or falling off during long-term operation.

[0031] like Figures 1 to 5 As shown, the heat insulation core 3 has a frustum structure that is wider at the top and narrower at the bottom, with the wider end of the heat insulation core 3 facing the housing 1. This frustum structure utilizes the principle of self-tightening on the inclined plane, which can achieve a better sealing effect under internal pressure, and also facilitates installation and positioning from above using the detachable upper housing 101 and lower housing 102.

[0032] The blocking structure 6 is fixed to the outside of the housing 1 by a flange, and the explosion vent 5 is fixed to the blocking structure 6 by a flange. The flange connection is standard and reliable, and facilitates the disassembly and replacement of the easily damaged part, the explosion vent 5.

[0033] The blocking structure 6 is a grid-type structure, and its rib thickness and grid size are determined by strength calculation based on the estimated impact energy to ensure that it has sufficient mechanical strength to block the heat insulation core 3.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-temperature explosion venting device for a regenerative incinerator, characterized in that, include: A housing (1) with a cavity (2) open at one end formed inside the housing (1). A heat insulation core (3) is installed at the opening of the cavity (2) to seal the opening of the cavity (2), and the opening of the cavity (2) is adapted to the heat insulation core (3). An explosion vent (4) is provided on the side wall of the shell (1). The explosion vent (4) is connected to the cavity (2). An explosion vent plate (5) is installed at the outlet of the explosion vent (4). A blocking structure (6) is installed between the explosion relief plate (5) and the explosion relief port (4) to allow gas to pass through but block the heat insulation core (3) from passing through.

2. The high-temperature explosion relief device for a regenerative incinerator according to claim 1, characterized in that, The housing (1) includes an upper housing (101) and a lower housing (102), which are fixed together by flanges in the lower middle part of the cavity (2); The heat insulation core (3) is installed on the lower housing (102), and the explosion vent (4) is located on the upper housing (101).

3. The high-temperature explosion venting device for a regenerative incinerator according to claim 1, characterized in that, The outer wall of the shell (1) is provided with a heat insulation layer (7), and the heat insulation layer (7) is fixed to the shell (1) by an anchoring component (8).

4. The high-temperature explosion venting device for a regenerative incinerator according to claim 3, characterized in that, The anchoring assembly (8) includes an anchor bolt (801) welded to the outer wall of the housing (1), a baffle (802) sleeved on the anchor bolt (801) and pressed against the outer surface of the insulation layer (7), and a nut (803) threaded to the end of the anchor bolt (801) to press the baffle (802).

5. The high-temperature explosion venting device for a regenerative incinerator according to claim 1, characterized in that, The heat insulation core (3) has a frustum structure that is wider at the top and narrower at the bottom, with the wider end of the heat insulation core (3) facing the shell (1).

6. The high-temperature explosion venting device for a regenerative incinerator according to claim 1, characterized in that, The blocking structure (6) is fixed to the outside of the housing (1) by a flange.

7. The high-temperature explosion venting device for a regenerative incinerator according to claim 1, characterized in that, The explosion relief disc (5) is fixed to the blocking structure (6) by a flange.

8. The high-temperature explosion venting device for a regenerative incinerator according to claim 1, characterized in that, The blocking structure (6) is a grid-type structure.

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