Emergency discharge device of secondary combustion chamber
By designing exposed emission doors and automated wire rope cylinder systems on the top of the second combustion chamber, the problems of emergency emission doors in the traditional second combustion chamber are solved and the problems of high-temperature deformation of emergency emission doors in the traditional second combustion chamber are achieved, and automated emergency emissions and safe operation of equipment are achieved.
Patent Information
- Application Number
- CN202422368441.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The emergency discharge door of the traditional second combustion chamber is set in the sleeve, which is difficult to maintain and is susceptible to high temperature deformation, resulting in the system being unable to operate normally.
An emergency discharge device for the second combustion chamber is designed. The discharge door is exposed outside and equipped with a wire rope and a cylinder-driven cover. It is automatically opened in abnormal situations through the control system to avoid manpower operation and protect it with a fire-resistant layer and rain cover.
It realizes automated emergency emissions, simplifies maintenance, avoids high-temperature deformation, ensures safe operation of the system, saves labor costs, and extends equipment life.
Smart Images
Figure CN223137889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the treatment of industrial waste, in particular to an emergency emission device for a secondary combustion chamber. Background Art
[0002] In the process of industrial waste treatment, the secondary combustion chamber is an important device installed at the rear section of the rotary kiln, which is used to effectively remove unburned organic components and other harmful gases in the tail gas of the rotary kiln. However, during the operation of the secondary combustion chamber, emergencies such as an instantaneous increase in gas volume or a sudden power outage of the system may occur. At this time, a reliable emergency emission device is needed to ensure the safe operation of the system.
[0003] The traditional emergency emission door of the secondary combustion chamber is mostly arranged in a sleeve, and the discharged flue gas is discharged outdoors or onto a rain shelter through the sleeve. Since the emergency emission door is in the sleeve, this method is difficult to repair and is easily deformed by high temperature, ultimately resulting in the inability to open the emission door and causing the entire system to malfunction. Summary of the Utility Model
[0004] To solve the defects of the above-mentioned prior art, the utility model provides an emergency emission device for a secondary combustion chamber. The utility model is mainly installed and applied on the top of the secondary combustion chamber. The outside of the emission door is not provided with a sleeve, but is directly exposed outside, and a rain shield is arranged on the top of the emission door; the control system is connected to the central control operation system through a communication system. When the pressure in the secondary combustion chamber is abnormal, the device is automatically opened for emergency emission to ensure the normal use of the system.
[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: an emergency emission device for a secondary combustion chamber, including a chimney and a cover plate. A hinge seat is arranged on the side of the chimney. One end of the cover plate is provided with a turning arm, and the middle of the turning arm is hinged on the hinge seat. A counterweight is arranged at the outer end of the turning arm; the turning arm is also connected with a steel wire rope, and the other end of the steel wire rope is fixed at the bottom of the chimney. A cylinder is also arranged on the side of the chimney, and a roller is arranged at the driving end of the cylinder. The steel wire rope is embedded in the surface groove of the roller. When the cylinder extends, the steel wire rope is pulled to pull down the outer end of the turning arm to pry the cover plate, so that the cover plate leaves the outlet of the chimney.
[0006] A refractory layer is arranged on the inner wall of the chimney, and the top of the refractory layer is set as a funnel-shaped opening as the outlet of the chimney; the bottom surface of the cover plate is funnel-shaped and matches in the outlet; a rain cap is arranged on the top of the cover plate.
[0007] The swing arm includes a short arm and a long arm. One end of the short arm is connected to the cover plate, and the other end is connected to the long arm. An articulated hole is provided at the connection between the short arm and the long arm, and the hole on the articulated seat of the articulated hole is connected by a pin shaft; a counterweight is arranged at the other end of the long arm.
[0008] A pull ring is fixed to the bottom of the long arm and the side of the chimney respectively, and both ends of the steel wire rope are fixed to the pull rings.
[0009] An installation frame is further fixed to the side of the chimney. The cylinder is installed on the installation frame, and the driving end of the cylinder faces downward; two fixed pulleys are also installed on the installation frame, and the steel wire rope is threaded through the steel wire rope.
[0010] The bottom of the chimney is provided with the top of the secondary combustion chamber.
[0011] In summary, the following technical effects are achieved by the present utility model:
[0012] The present utility model is simple to operate, has a compact structure and reasonable design. When the air pressure detection sensor detects that the air pressure in the secondary combustion chamber body exceeds the preset value, it transmits a signal to the controller. The controller controls the hydraulic cylinder to start. The cylinder push rod drives the swing arm to rotate through the steel wire rope, and the swing arm drives the cover plate to open the cover plate from the opening of the secondary combustion chamber body, thereby realizing pressure relief. The whole process is automatically controlled, without manual pulling, saving labor costs and avoiding harm to the human body caused by high-temperature gas. Description of the Drawings
[0013] Figure 1 is a schematic diagram of the closed state of an emergency discharge device for a secondary combustion chamber;
[0014] Figure 2 is Figure 1 the schematic diagram of the open state of
[0015] Figure 3 is Figure 1 the top view of Detailed Embodiment
[0016] The following further describes the present utility model in detail with reference to the drawings.
[0017] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications to this embodiment without creative contributions according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.
[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.
[0019] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.
[0020] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0021] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0022] Embodiment:
[0023] Figure 1 is a schematic diagram of the closed state of an emergency discharge device for a secondary combustion chamber. Figure 2 is Figure 1 schematic diagram of the open state of Figure 3 is Figure 1Top view, including chimney 1 and cover plate 3. An articulated seat 6 is provided on the side of the chimney 1. One end of the cover plate 3 is provided with a swing arm 5. The middle of the swing arm 5 is articulated on the articulated seat 6. A counterweight 7 is provided at the outer end of the swing arm 5. The swing arm 5 is also connected to a steel wire rope 8. The other end of the steel wire rope 8 is fixed to the bottom of the chimney 1. A cylinder 10 is also provided on the side of the chimney 1. A roller is provided at the driving end of the cylinder 10. The steel wire rope 8 is embedded in the surface groove of the roller. When the cylinder 10 extends, it pulls the steel wire rope 8 to pull down the outer end of the swing arm 5 to pry the cover plate 3, so that the cover plate 3 leaves the outlet of the chimney 1.
[0024] Under normal operating conditions, the cover plate is in a closed state under the influence of its own gravity. When an emergency occurs, the cylinder is activated to generate a thrust force, pulling the steel wire rope, driving the swing arm to rotate downward, thereby driving the cover plate to open and realizing interlocking.
[0025] The utility model is mainly installed and applied at the top of the secondary combustion chamber. There is no sleeve outside the discharge door, but it is directly exposed outside. A rain shield is provided at the top of the discharge door, which is convenient for maintenance.
[0026] The rotating support of the utility model is arranged below the chimney outlet. Compared with the previous arrangement inside the chimney, it can better avoid the impact of high-temperature flue gas on the support bearing and the rotating shaft of the chimney, thereby preventing deformation and extending the service life of the equipment.
[0027] A refractory layer 2 is provided on the inner wall of the chimney 1. The top of the refractory layer 2 is provided with a funnel-shaped opening as the outlet of the chimney 1. The bottom surface of the cover plate 3 is funnel-shaped and matches in the outlet. A rain cap 4 is provided on the top of the cover plate 3.
[0028] Refractory mud castable is provided inside the discharge chimney. While ensuring the flue gas flow rate, it plays a protective role on the surface of the shell inside, preventing flue gas from corroding the shell, and preventing the temperature outside the chimney shell from being too high outside.
[0029] In the natural state of the top cover plate, due to its own gravity factor, it is in a closed state. Refractory materials are provided at the lower part of the cover plate to prevent flue gas corrosion. A stainless steel rain cap is provided at the upper part. Since the flue gas needs to be discharged to the atmosphere, most of the chimney outlets are arranged outdoors. The inside is filled with high-temperature flue gas, and the erosion by rain on rainy days will have a corrosive effect on the cover plate. Setting a rain cap can effectively prevent rainwater from accumulating on the upper part of the cover plate and extend the service life of the product.
[0030] The swing arm 5 includes a short arm and a long arm. One end of the short arm is connected to the cover plate 3, and the other end is connected to the long arm. An articulated hole is provided at the connection between the short arm and the long arm, and the hole in the articulated seat 6 is connected through a pin shaft; a counterweight 7 is provided at the other end of the long arm. A pull ring is fixed to the bottom of the long arm and the side of the chimney 1, and both ends of the steel wire rope 8 are fixed to the pull rings.
[0031] The cover plate and the swing arm are connected by bolts to form a whole. Two groups of swing arms are symmetrically arranged along the center line. A counterweight and a steel wire rope connection ear seat are placed at the tail end of the swing arm, so that the stability is good during use.
[0032] An installation frame is also fixed to the side of the chimney 1. The cylinder 10 is installed on the installation frame, and the driving end of the cylinder 10 faces downward; two fixed pulleys 9 are also installed on the installation frame, and the steel wire rope 8 is threaded through the steel wire rope 8.
[0033] The steel wire rope is connected to the joint at the head of the cylinder through a fixed pulley device. When an abnormal situation occurs, the cylinder is started through the feedback of the pressure sensor. The cylinder extends downward to generate a thrust force, driving the steel wire rope to pull the upper swing arm. The swing arm tilts upward, thereby driving the opening of the cover plate. A limiter is provided on the rotary support. It can effectively prevent the cover plate from opening too large an angle and being unable to reset subsequently.
[0034] Under the normal use state of the secondary combustion chamber, the cylinder is in a closed state, and the cylinder push rod retracts into the cylinder. When an abnormal situation occurs, the cylinder works and the push rod will extend out of the cylinder to generate a thrust force. Compared with the previous state where the cylinder relied on pulling force to contract the steel wire rope and the push rod was exposed for a long time and prone to rust, it is well solved.
[0035] The bottom of the chimney 1 is provided with the top 11 of the secondary combustion chamber.
[0036] The secondary combustion chamber is an exhaust gas secondary combustion system installed at the rear section of the rotary kiln, which can effectively remove unburned organic components and other harmful gases in the tail gas of the rotary kiln. An emergency discharge chimney is provided at the top of the secondary combustion chamber for constant pressure discharge. When an emergency situation such as an instantaneous increase in the gas volume in the secondary combustion chamber or a sudden power outage of the system occurs, the explosion-proof door at the top of the secondary combustion chamber automatically opens to relieve pressure, and the opening device of the chimney will also open, and the flue gas is discharged into the atmosphere through the chimney to ensure the safe operation of the secondary combustion system.
[0037] The above description is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention are all within the scope of the technical solution of the present invention.
Claims
1. An emergency discharge device for a secondary combustion chamber, characterized in that: It includes a chimney (1) and a cover plate (3). An articulated seat (6) is provided on the side of the chimney (1). One end of the cover plate (3) is provided with a swing arm (5). The middle of the swing arm (5) is articulated on the articulated seat (6). A counterweight (7) is provided at the outer end of the swing arm (5). The swing arm (5) is also connected to a steel wire rope (8). The other end of the steel wire rope (8) is fixed to the bottom of the chimney (1). A cylinder (10) is also provided on the side of the chimney (1). A roller is provided at the driving end of the cylinder (10). The steel wire rope (8) is embedded in the surface groove of the roller. When the cylinder (10) extends, it pulls the steel wire rope (8) to pull down the outer end of the swing arm (5) to pry the cover plate (3) so that the cover plate (3) leaves the outlet of the chimney (1).
2. The emergency discharge device for a secondary combustion chamber according to claim 1, wherein: A refractory layer (2) is provided on the inner wall of the chimney (1). The top of the refractory layer (2) is provided with a funnel-shaped opening as the outlet of the chimney (1). The bottom surface of the cover plate (3) is funnel-shaped and matches in the outlet. A rain cap (4) is provided on the top of the cover plate (3).
3. The emergency discharge device for a secondary combustion chamber according to claim 1, characterized in that: The swing arm (5) includes a short arm and a long arm. One end of the short arm is connected to the cover plate (3), and the other end is connected to the long arm. An articulated hole is provided at the connection between the short arm and the long arm. The hole in the articulated seat (6) is connected by a pin shaft. The counterweight (7) is provided at the other end of the long arm.
4. The emergency discharge device for a secondary combustion chamber according to claim 3, wherein: Pulling rings are fixed to the bottom of the long arm and the side of the chimney (1). Both ends of the steel wire rope (8) are fixed to the pulling rings respectively.
5. The emergency discharge device for a secondary combustion chamber according to claim 4, characterized in that: An installation frame is also fixed to the side of the chimney (1). The cylinder (10) is installed on the installation frame, and the driving end of the cylinder (10) faces downward. Two fixed pulleys (9) are also installed on the installation frame. The steel wire rope (8) passes through the steel wire rope (8).
6. The emergency discharge device for the secondary combustion chamber according to claim 1, wherein: The bottom of the chimney (1) is provided with the top of the secondary combustion chamber (11).