Emergency discharge door at top of secondary combustion chamber
By introducing external guardrails, limiting units, bearings and flip sleeves into the emergency discharge door on the top of the second combustion chamber, the problems of easy rust and jamming of hinged connections, lack of protective barrels and limiting devices are solved, and high efficiency is achieved The flue gas conduction and sealing properties reduce equipment damage and operating noise.
Patent Information
- Application Number
- CN202323386246.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-12
AI Technical Summary
The emergency discharge door on the top of the existing second combustion chamber has problems such as the hinged connection is prone to rust and stuck, the lack of external protective cartridges, causing high-temperature flue gas to damage surrounding buildings and personnel, and insufficient limit buffering devices lead to difficult deformation and resetting of the door cover.
An emergency discharge door including an outer casing, a limiting unit, a bearing and a flip sleeve is designed. The outer casing can be adjusted to guide the flue gas to discharge. The limiting unit avoids collision of the sealing cover, and the bearing and flip sleeve are replaced by a hinge type. Rotate, the sealing cotton achieves sealing and the counterweight blocks maintain balance.
It effectively avoids collision between the sealing cover and the outer casing, reduces high-temperature flue gas leakage and equipment damage, improves sealing and operating efficiency, and reduces rust and noise problems.
Smart Images
Figure CN222210327U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hazardous waste incineration treatment equipment, in particular to an emergency discharge door on the top of a secondary combustion chamber. Background Art
[0002] At present, the domestic hazardous waste incineration system usually includes a feeding system, a rotary kiln, a waste heat boiler, a quenching tower, a flue gas purification system (dry deacidification / semi-dry deacidification device, a bag filter, a wet scrubber, a denitrification reactor device, etc.), an induced draft fan, a chimney, etc.
[0003] In the whole system, under normal working conditions, the flue gas generated by incineration generates negative pressure when the induced draft fan at the tail of the system device is running, so that the flue gas flows from the rotary kiln into the secondary combustion chamber, enters the waste heat boiler → quench tower → Venturi reactor → bag filter → scrubber → desulfurization reactor → induced draft fan → chimney, and is discharged into the atmosphere. However, sometimes under abnormal working conditions, the high-temperature flue gas generated by incineration cannot be discharged from the chimney through the normal incineration system, pipelines and equipment, such as explosions in the rotary kiln or positive pressure in the secondary combustion chamber or water loss in the waste heat boiler, power loss and gas loss in the system, bag filter inlet temperature higher than 220℃ and other emergency situations, the high-temperature flue gas directly enters the rear equipment of the secondary combustion chamber, causing safety accidents and failure losses such as dry burning of the boiler, burning of the bag filter, and burning of the scrubber. Therefore, the connection between the secondary combustion chamber and its rear equipment must be cut off, that is, it must be discharged from the emergency discharge door installed on the top of the secondary combustion chamber to avoid safety hazards.
[0004] However, the current emergency discharge door on the top of the secondary combustion chamber has the following problems:
[0005] 1. Conventional discharge door rotating shafts usually adopt hinged connection. Once the hinged connection is exposed to the air for a long time and rusts, it is easy to get stuck, causing the safety door to fail to work normally. In addition, the hinged structure of the rotating shaft and the support ear will cause problems such as jamming, equipment vibration, and noise due to rust.
[0006] 2. Conventional discharge doors are not equipped with external protective tubes. When the emergency discharge door is opened, high-temperature smoke is discharged instantly, which will damage surrounding buildings, especially people around. In addition, the discharge port is lower than the surrounding buildings, which is not conducive to smoke diffusion.
[0007] 3. Conventional emergency discharge doors are not equipped with limit buffer limit devices. When the discharge door is opened, the door cover will hit the outer casing, which may easily cause deformation of the door cover and the outer casing, and it is not easy to close normally when resetting, resulting in failure of the door cover. Utility Model Content
[0008] One advantage of the utility model is that it provides an emergency discharge door on the top of the secondary combustion chamber, wherein the outer protective tube is covered outside the cylinder, so the outer protective tube can prevent the high-temperature smoke from being discharged from the cylinder and causing damage to the surrounding buildings and personnel. Secondly, the length of the outer protective tube is adjustable, so that the smoke can be discharged upward through the outer protective tube to a high place, which is conducive to the diffusion of the smoke, thereby isolating the smoke from the surrounding buildings and personnel, and greatly reducing the impact on the outside.
[0009] Another advantage of the present invention is that it provides an emergency discharge door on the top of the secondary combustion chamber, wherein the setting of the limiting unit can prevent the sealing cover from directly colliding with the inner wall of the outer casing when the sealing cover swings rapidly, thereby preventing the sealing cover and the outer casing from being deformed due to collision. Secondly, the buffer block arranged on the limiting block can buffer the swinging force of the sealing cover, thereby reducing the impact force of the sealing cover on the outer casing when it swings.
[0010] Another advantage of the present invention is that it provides an emergency discharge door on the top of the secondary combustion chamber, wherein the cooperation between the bearing and the flip sleeve can replace the existing rotation method of the rotating shaft and the support ear hinge, effectively avoiding the problems of rust, jamming, vibration and high noise in the existing rotation method, thereby making the sealing cover more stable and smooth when rotating and easy to install.
[0011] Another advantage of the present invention is that it provides an emergency discharge door on the top of the secondary combustion chamber. The sealing cotton arranged on the fitting surface of the sealing cover and the main outlet is squeezed and deformed when the sealing cover covers the main outlet of the cylinder, thereby achieving airtightness between the sealing cover and the cylinder, thereby preventing high-temperature flue gas in the cylinder from leaking to the outside.
[0012] Another advantage of the utility model is that it provides an emergency discharge door on the top of the secondary combustion chamber. The counterweight block can balance the sealing cover and the cross frame when the sealing cover swings, so that the sealing cover can swing smoothly and improve the operating efficiency.
[0013] In order to achieve at least one of the above advantages of the utility model, the utility model provides an emergency discharge door at the top of the secondary combustion chamber, including:
[0014] A cylinder;
[0015] A plugging assembly, the plugging assembly comprising a tic-tac-toe frame, a sealing cover and a driving unit, the tic-tac-toe frame being hinged to the cylinder body and being located above the cylinder body so as to be able to swing up and down, the sealing cover being installed on the tic-tac-toe frame and being located directly above the cylinder body, and the driving unit being used for driving the tic-tac-toe frame to swing up and down;
[0016] A safety protection component, the safety protection component includes an outer protective tube and a limiting unit, the outer protective tube covers the outer side of the cylinder body and the plugging component, and the limiting unit is installed on the inner wall of the outer protective tube and is located on the path of the sealing cover swinging upward.
[0017] According to an embodiment of the utility model, the cylinder has a main outlet and a main inlet, the sealing cover is used to cover the main outlet, and the main inlet is connected to the air outlet of the secondary combustion chamber.
[0018] According to an embodiment of the utility model, the limiting unit includes a limiting block and a buffer block, the limiting block is arranged on the inner wall of the outer casing and is located on the upward swinging path of the sealing cover, and the buffer block is arranged on the end face of the limiting block facing the well frame.
[0019] According to an embodiment of the utility model, the end surface of the limiting block facing the well frame is set as an inclined surface, and the inclination angle is the same as the inclination angle after the well frame and the limiting block are in contact.
[0020] According to an embodiment of the utility model, the driving unit includes a telescopic cylinder, a connecting rod and a connecting seat, the telescopic cylinder body is hinged to the connecting seat, the connecting seat is installed on the cylinder body, one end of the connecting rod is connected to the output end of the telescopic cylinder, and the other end is hinged to an end of the cross frame away from the sealing cover, and the hinge point of the cross frame and the cylinder body is located between the hinge points of the sealing cover, the connecting rod and the cross frame.
[0021] According to one embodiment of the utility model, the emergency discharge door on the top of the secondary combustion chamber also includes a connecting assembly, the cross frame is installed on the cylinder body via the connecting assembly, the connecting assembly includes a base plate and at least one support plate, the base plate is fixed to the cylinder body, the support plate is fixed to the base plate, the cross frame is hinged to the upper end of the support plate, and the telescopic cylinder body is installed on the base plate via the connecting seat.
[0022] According to an embodiment of the utility model, the blocking assembly further includes a flip sleeve and a bearing, one end of the flip sleeve is fixedly connected to the cross frame, and the other end of the flip sleeve is hinged to the support plate via the bearing.
[0023] According to an embodiment of the utility model, the plugging assembly further includes a counterweight block, and the counterweight block is installed on the tail of the cross frame away from the sealing cover.
[0024] According to an embodiment of the utility model, sealing cotton is provided on the fitting surface between the sealing cover and the main outlet.
[0025] According to an embodiment of the present invention, the inner wall of the cylinder is lined with a refractory insulation layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a cross-sectional view of the utility model.
[0027] 10. Chimney;
[0028] 101. Main exit;
[0029] 102. Main entrance;
[0030] 11. Refractory insulation layer;
[0031] 20. Plugging components;
[0032] 21. Tic-tac-toe frame;
[0033] 22. Sealing cover;
[0034] 221, sealing cotton;
[0035] 23. Drive unit;
[0036] 231, telescopic cylinder; 232, connecting rod; 233, connecting seat;
[0037] 24. Flip set;
[0038] 25. Bearings;
[0039] 26. Counterweight;
[0040] 30. Safety protection components;
[0041] 31. Outer casing;
[0042] 32. Limiting unit;
[0043] 321, limiting block; 322, buffer block;
[0044] 40. Connecting components;
[0045] 41. Bottom plate;
[0046] 411. Strengthening ribs;
[0047] 42. Support plate. DETAILED DESCRIPTION
[0048] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0049] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.
[0050] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0051] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0052] According to the attached Figure 1 As shown, the emergency discharge door on the top of the secondary combustion chamber according to a preferred embodiment of the utility model will be described in detail below, wherein the emergency discharge door on the top of the secondary combustion chamber includes a cylinder 10, a blocking component 20 and a safety protection component 30.
[0053] The blocking component 20 is mounted on the cylinder 10 in a manner that it can swing up and down and is used to block the opening of the cylinder 10 . The safety protection component 30 covers the cylinder 10 and the outside of the blocking component 20 .
[0054] Specifically, the plugging assembly 20 includes a grid frame 21, a sealing cover 22 and a driving unit 23. The grid frame 21 is hinged to the cylinder 10 so as to be able to swing up and down and is located above the cylinder 10. The sealing cover 22 is installed on the grid frame 21 and is located directly above the cylinder 10. The sealing cover 22 is in contact with or out of contact with the cylinder 10 as the grid frame 21 swings up and down. The driving unit 23 is hinged to the grid frame and the cylinder 10 respectively and is used to drive the grid frame 21 to swing up and down.
[0055] Specifically, the safety protection assembly 30 includes an outer casing 31 and a limiting unit 32. The outer casing 31 covers the outer side of the cylinder 10 and the plugging assembly 20, and the limiting unit 32 is installed on the inner wall of the outer casing 31 and is located on the upward swinging path of the sealing cover 22, so that the sealing cover 22 contacts the limiting unit 32 after swinging upward at a certain angle, thereby preventing the sealing cover 22 from colliding with the outer casing 31.
[0056] Specifically, the cylinder 10 has a main outlet 101 and a main inlet 102. The sealing cover 22 is used to cover the main outlet 101. The main inlet 102 is connected to the gas outlet of the secondary combustion chamber.
[0057] Specifically, the limiting unit 32 includes a limiting block 321 and a buffer block 322. The limiting block 321 is arranged on the inner wall of the outer casing 31 and is located on the path of the sealing cover 22 swinging up and down. The buffer block 322 is arranged on the end face of the limiting block 321 facing the well frame 21.
[0058] Preferably, the end surface of the limiting block 321 facing the tangle frame 21 is set as an inclined surface, and the inclination angle is the same as the inclination angle after the tangle frame 21 and the limiting block 321 contact. In this way, when the tangle frame 21 swings upward to contact the limiting block 321, the limiting block 321 can reduce the damage to the tangle frame 21.
[0059] Preferably, the buffer block 322 is configured to be made of ceramic fiber cotton. It can be understood by those skilled in the art that ceramic fiber cotton has the characteristics of both elasticity and high temperature resistance. After the lattice frame 21 drives the sealing cover 22 to rotate rapidly by a certain angle, the lattice frame 21 contacts the limiting block 321, that is, the limiting block 321 can limit the swing angle of the sealing cover 22, thereby preventing the lattice frame 21 from contacting the outer casing 31 due to excessive swing, thereby preventing the lattice frame 21 from colliding with the outer casing 31. Secondly, the elastic buffer block 322 can reduce the impact force of the lattice frame 21 on the outer casing 31.
[0060] Specifically, the driving unit 23 includes a telescopic cylinder 231, a connecting rod 232 and a connecting seat 233. The cylinder body of the telescopic cylinder 231 is hinged to the connecting seat 233. The connecting seat 233 is installed on the cylinder body 10. One end of the connecting rod 232 is connected to the output end of the telescopic cylinder 231, and the other end is hinged to one end of the criss-cross frame 21 away from the sealing cover 22.
[0061] Specifically, the hinge point of the cross frame 21 and the cylinder 10 is located between the hinge point of the sealing cover 22, the connecting rod 232 and the cross frame 21. It can be understood by those skilled in the art that when the telescopic cylinder 231 is in extension, the sealing cover 22 swings downward to be in close contact with the cylinder 10, so that the sealing cover 22 blocks the main outlet 101, thereby preventing the high-temperature gas inside the secondary combustion chamber from leaking to the outside. When emergency gas discharge is required, the telescopic cylinder 231 is in a retracted state, at which time the sealing cover 22 swings upward away from the cylinder 10, thereby urgently discharging the gas in the secondary combustion chamber to the outside, avoiding failure inside the secondary combustion chamber.
[0062] Specifically, the fitting surface between the sealing cover 22 and the main outlet 101 is provided with sealing cotton 221. Those skilled in the art can understand that the sealing cotton 221 can improve the sealing between the sealing cover 22 and the cylinder 10, thereby preventing high-temperature smoke from leaking from the cylinder 10.
[0063] Preferably, the emergency discharge door at the top of the secondary combustion chamber also includes a connecting assembly 40, and the cross frame 21 is installed on the cylinder 10 via the connecting assembly 40. The connecting assembly 40 includes a base plate 41 and at least one support plate 42. The base plate 41 is fixed to the cylinder 10, and the support plate 42 is fixed to the base plate 41. The cross frame 21 is hinged to the upper end of the support plate 42, and the cylinder body of the telescopic cylinder 231 is installed on the base plate 41 via the connecting seat 233.
[0064] Preferably, the plugging assembly 20 further includes a flip sleeve 24 and a bearing 25, one end of the flip sleeve 24 is fixedly connected to the cross frame 21, and the other end of the flip sleeve 24 is hinged to the support plate 42 via the bearing 25. It can be understood by those skilled in the art that by using the bearing 24 to replace the existing rotation mode of the rotating shaft and the support ear hinge, the existing rotation mode is effectively avoided from being prone to rust, jamming, vibration and high noise, so that the sealing cover 22 can rotate more smoothly.
[0065] Specifically, the plugging assembly 20 further includes a counterweight 26, which is mounted on the tail of the tangle frame 21 away from the sealing cover 22. It can be understood by those skilled in the art that the weight of the counterweight 26 can be determined according to the installation position of the flip sleeve 24, the hinge point between the connecting rod 232 and the tangle frame 21, and the installation position of the sealing cover 22, so that the tangle frame 21 is subjected to balanced force when swinging, thereby ensuring the balance of the tangle frame 21 when swinging.
[0066] Preferably, the number of the support plates 42 can be two, three, four, etc., and secondly, the arrangement direction of the plurality of support plates 42 is parallel to the width direction of the crisscross frame 21. It can be understood by those skilled in the art that the provision of the plurality of support plates 42 can improve the stability of the crisscross frame 21 when it swings, so that the sealing cover 22 can accurately cover the main outlet 101 of the cylinder 10, thereby preventing exhaust gas from leaking from the cylinder 10 during safe operation.
[0067] Preferably, the length of the outer casing 31 can be determined according to the surrounding environment of the actual installation position of the discharge door, so as to ensure that the high-temperature flue gas at the top of the secondary combustion chamber passes through the cylinder 10 and is discharged to a higher place through the outer casing 31, thereby isolating the flue gas from contact with surrounding buildings and personnel, greatly reducing the impact on the outside.
[0068] Specifically, the inner wall of the cylinder 10 is lined with a fire-resistant insulation layer 11. Those skilled in the art can understand that the fire-resistant insulation layer 11 provided on the inner wall of the cylinder 10 can effectively prevent the heat inside the cylinder 10 from being dissipated outward, thereby preventing the telescopic cylinder 231 and the connecting assembly 40 from being shortened due to high temperature, thereby increasing the overall service life and reducing the operating cost.
[0069] Preferably, the bottom plate 41 is provided with a reinforcing rib 411 for connecting the cylinder 10 and the support plate 42. Those skilled in the art can understand that the reinforcing rib 411 can improve the degree of fixation between the bottom plate 41 and the cylinder 10 and the support plate 42, thereby improving the stability of the discharge door.
[0070] Preferably, the telescopic cylinder 231 can be configured as a gas cylinder or an oil cylinder.
[0071] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.
Claims
1. Emergency discharge door on the top of the secondary combustion chamber, characterized by: include: A cylinder; A plugging assembly, the plugging assembly comprising a tic-tac-toe frame, a sealing cover and a driving unit, the tic-tac-toe frame being hinged to the cylinder body and being located above the cylinder body so as to be able to swing up and down, the sealing cover being installed on the tic-tac-toe frame and being located directly above the cylinder body, and the driving unit being used for driving the tic-tac-toe frame to swing up and down; A safety protection component, the safety protection component includes an outer protective tube and a limiting unit, the outer protective tube covers the outer side of the cylinder body and the plugging component, and the limiting unit is installed on the inner wall of the outer protective tube and is located on the path of the sealing cover swinging upward.
2. The emergency discharge door at the top of the secondary combustion chamber according to claim 1 is characterized in that: The cylinder has a main outlet and a main inlet. The sealing cover is used to cover the main outlet. The main inlet is connected to the air outlet of the secondary combustion chamber.
3. The emergency discharge door at the top of the secondary combustion chamber according to claim 1 is characterized in that: The limiting unit includes a limiting block and a buffer block. The limiting block is arranged on the inner wall of the outer casing and is located on the upward swinging path of the sealing cover. The buffer block is arranged on the end surface of the limiting block facing the well frame.
4. The emergency discharge door at the top of the secondary combustion chamber according to claim 3 is characterized in that: The end surface of the limiting block facing the well frame is set as an inclined surface, and the inclination angle is the same as the inclination angle after the well frame and the limiting block contact.
5. The emergency discharge door at the top of the secondary combustion chamber according to claim 1 is characterized in that: The driving unit includes a telescopic cylinder, a connecting rod and a connecting seat, the telescopic cylinder is hinged to the connecting seat, the connecting seat is installed on the cylinder, one end of the connecting rod is connected to the output end of the telescopic cylinder, and the other end is hinged to an end of the cross frame away from the sealing cover, and the hinge point of the cross frame and the cylinder is located between the hinge points of the sealing cover, the connecting rod and the cross frame.
6. The emergency discharge door at the top of the secondary combustion chamber according to claim 5 is characterized in that: The emergency discharge door at the top of the secondary combustion chamber also includes a connecting assembly, the cross frame is installed on the cylinder body via the connecting assembly, the connecting assembly includes a base plate and at least one support plate, the base plate is fixed to the cylinder body, the support plate is fixed to the base plate, the cross frame is hinged to the upper end of the support plate, and the telescopic cylinder body is installed on the base plate via the connecting seat.
7. The emergency discharge door at the top of the secondary combustion chamber according to claim 6 is characterized in that: The plugging assembly also includes a flip sleeve and a bearing. One end of the flip sleeve is fixedly connected to the cross frame, and the other end of the flip sleeve is hinged to the support plate via the bearing.
8. The emergency discharge door at the top of the secondary combustion chamber according to claim 7 is characterized in that: The plugging assembly also includes a counterweight block, which is installed on the tail of the well frame away from the sealing cover.
9. The emergency discharge door at the top of the secondary combustion chamber according to claim 2 is characterized in that: The fitting surface between the sealing cover and the main outlet is provided with sealing cotton.
10. The emergency discharge door at the top of the secondary combustion chamber according to claim 1, characterized in that: The inner wall of the cylinder is lined with a refractory insulation layer.