Emergency interlocking lifting device for flue damper of coke oven

Abstract

The utility model discloses a coke oven flue flashboard emergency interlocking lifting device which comprises a flue, a gas storage tank and an air compressor are connected with a PLC emergency interlocking control system, a balancing weight is hoisted at the lower end of an auxiliary hoisting block, and a balancing weight guide frame is installed on the outer wall of the balancing weight in a sleeved mode. According to the emergency interlocking lifting device for the flue gate plate of the coke oven, the unhooking cylinder can be controlled by the PLC emergency interlocking control system to drive the lifting hook lever to turn over, so that the lifting hook lever is unhooked from the supporting rod, the flue gate plate is lifted by virtue of self-weight falling of the balancing weight, and flue gas of the coke oven can directly pass through a chimney; explosion accidents caused by gathering of flue gas in the flue are avoided, the gas storage tank, the air compressor and the flue flashboard master control system can be wrapped and protected through the mounting frame and prevented from being damaged, the flue flashboard and the balancing weight can be guided to ascend and descend through the flashboard lifting guide frame and the balancing weight guide frame, and the flue flashboard and the balancing weight are more stable. And the flue flashboard can be conveniently and quickly disassembled, assembled and replaced through stretching and retracting of the limiting sliding block.

Description

Technical Field

[0001] This utility model relates to the field of coke oven safety equipment technology, specifically to an emergency interlocking lifting device for a coke oven flue gate. Background Technology

[0002] During the coke oven production process, the flue damper is normally in a completely closed state, and the flue gas after coke oven combustion is discharged in compliance with standards after desulfurization and denitrification.

[0003] When the coke oven system suddenly loses power, the normally electrically controlled flue damper of the existing equipment cannot work. At this time, the flue gas in the flue cannot be discharged normally, which can easily accumulate and cause a flue gas explosion accident. This poses a great threat to the safe production of the coke oven. In addition, the equipment has poor protection and poor lifting stability, resulting in poor performance. Therefore, an emergency interlocking lifting device for the coke oven flue damper is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an emergency interlocking lifting device for the flue gate of a coke oven, in order to solve the problem mentioned in the background art that when the coke oven system suddenly loses power, the normally electrically controlled flue gate cannot work. At this time, the flue gas in the flue cannot be discharged normally, which can easily accumulate and may cause a flue gas explosion accident, posing a great threat to the safe production of the coke oven. In addition, the equipment has poor protection, poor lifting stability, and poor performance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an emergency interlocking lifting device for a coke oven flue damper, comprising a flue, a flue damper installed on the front side of the flue, a damper lifting guide frame embedded in the front side of the inner wall of the flue, and sliding guide rails provided on both sides of the inner wall of the damper lifting guide frame, telescopic grooves provided at the upper and lower ends of both sides of the flue damper, and a knob groove provided on the front side of the inner wall of the telescopic groove, a limit slider slidably inserted into the inner wall of the telescopic groove, and a locking knob slidably inserted into the limit slider and the inner wall of the knob groove, the limit slider slidably inserted into the sliding guide rail, a hoisting cable installed at the upper end of the flue damper, and a hoisting pulley slidably installed on the outer wall of the hoisting cable, and the upper end of the inner wall of the flue... A supporting crossbeam is installed, with the lifting pulley vertically mounted to the lower end of the crossbeam. An electric hoist is attached to the other end of the lifting cable and connected to the middle of the lower end of the crossbeam. An auxiliary lifting hook is installed at the lower end of the electric hoist, and an auxiliary lifting block is mounted at the lower end of the auxiliary lifting hook. A support rod is fixedly connected to the lower end of the inner wall of the auxiliary lifting block, and a lifting hook is hooked onto the outer wall of the support rod. A support platform is fixedly connected to the middle of the other side of the flue's inner wall, and a release cylinder is flipped and installed on one side of the upper part of the support platform. The output end of the release cylinder is flipped and connected to the lifting hook, and a gas guide pipe and an electrical wire are respectively connected to one side of the release cylinder. A PLC is installed at the other end of the gas guide pipe and the electrical wire. An emergency interlock control system is provided, and the PLC emergency interlock control system is fixedly connected to the lower end of the other side of the flue inner wall. A mounting bracket is fixedly connected to the lower end of the other side of the flue, and an air tank is installed on one side of the inner wall of the mounting bracket. An air compressor is installed in the middle of the inner wall of the mounting bracket, and a flue damper main control system is electrically installed on one side of the air compressor. The air tank, air compressor and PLC emergency interlock control system are connected. A counterweight is hoisted at the lower end of the auxiliary hoisting block, and a counterweight guide is fitted on the outer wall of the counterweight. A buffer pad is installed at the lower end of the inner wall of the counterweight guide.

[0006] Preferably, the flue gate is connected to the gate lifting guide frame in a limited sliding lifting manner via a sliding guide rail and a limiting slider.

[0007] Preferably, the flue damper is installed in a spliced ​​and inserted manner with the damper lifting guide frame via a sliding guide rail and a limiting slider, and the limiting slider is slidably and telescopically connected to the flue damper via a telescopic groove, and the limiting slider is locked and fixedly connected to the flue damper via a locking knob.

[0008] Preferably, the air tank, air compressor, and flue damper control system are installed in a wrapped manner with the flue via a mounting bracket.

[0009] Preferably, the shape of the counterweight block matches the shape of the counterweight block guide frame, and the counterweight block and the counterweight block guide frame are connected by a limiting sliding lifting connection. The buffer pad is inserted and spliced ​​with the counterweight block guide frame, and the buffer pad is made of rubber.

[0010] Preferably, the lifting hook is a lever structure, and the lifting hook is installed in a flip-locking manner with the support rod through a release cylinder. The lifting cable has two sets of structures, and the other set of the lifting cable is connected to the auxiliary lifting hook.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This coke oven flue gate emergency interlock lifting device can control the unhooking cylinder to drive the lifting hook lever to flip through the PLC emergency interlock control system, so that it is unhooked from the support rod, thereby lifting the flue gate by the weight of the counterweight block, so that the coke oven flue gas can be directly connected to the chimney, avoiding the accumulation of flue gas in the flue and causing an explosion accident. Moreover, the gas storage tank, air compressor, and flue gate main control system can be wrapped and protected by the mounting frame to avoid damage. Furthermore, the flue gate and counterweight block can be guided and lifted by the gate lifting guide and the counterweight block guide, which is more stable. In addition, the flue gate is easy to disassemble and replace quickly by extending and retracting the limit slider. Attached Figure Description

[0012] Figure 1 This is a front view of an emergency interlocking lifting device for a coke oven flue gate according to the present invention.

[0013] Figure 2 This is a schematic diagram of the internal structure of an emergency interlocking lifting device for a coke oven flue gate according to the present invention.

[0014] Figure 3 This utility model relates to an emergency interlocking lifting device for a coke oven flue damper. Figure 2 Enlarged view of point A in the middle;

[0015] Figure 4 This utility model relates to an emergency interlocking lifting device for a coke oven flue damper. Figure 2 Enlarged view at point B in the middle;

[0016] Figure 5 This utility model relates to an emergency interlocking lifting device for a coke oven flue damper. Figure 2 Enlarged view of point C in the middle.

[0017] In the diagram: 1. Flue, 2. Flue damper, 3. Lifting pulley, 4. Lifting cable, 5. Auxiliary lifting block, 6. Electric hoist, 7. Auxiliary lifting hook, 8. Unhooking cylinder, 9. Air duct, 10. Electrical wire, 11. Air tank, 12. Mounting frame, 13. Air compressor, 14. Flue damper main control system, 15. PLC emergency interlock control system, 16. Support platform, 17. Counterweight guide frame, 18. Counterweight, 19. Drum damper lifting guide frame, 20. Sliding guide rail, 21. Limit slider, 22. Locking knob, 23. Knob groove, 24. Telescopic groove, 25. Lifting hook, 26. Support rod, 27. Buffer pad, 28. Support crossbeam. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5This utility model provides a technical solution: an emergency interlocking lifting device for a coke oven flue damper, comprising a flue 1, a flue damper 2, a lifting pulley 3, a lifting cable 4, an auxiliary lifting block 5, an electric hoist 6, an auxiliary lifting hook 7, a release cylinder 8, a gas guide pipe 9, an electrical conductor 10, a gas storage tank 11, a mounting frame 12, an air compressor 13, a flue damper main control system 14, and a PLC. The system includes an emergency interlocking control system 15, a support platform 16, a counterweight guide frame 17, a counterweight 18, a gate lifting guide frame 19, a sliding guide rail 20, a limit slider 21, a locking knob 22, a knob groove 23, a telescopic groove 24, a lifting hook 25, a support rod 26, a buffer pad 27, and a support crossbeam 28. A flue gate 2 is installed on the front side of the flue 1. The flue gate 2 is connected to the gate lifting guide frame 19 via the sliding guide rail 20 and the limit slider 21 in a limited sliding lifting connection, allowing the flue gate 2 to be adjusted for limited sliding lifting, resulting in greater stability. The flue gate 2 is spliced ​​and inserted with the gate lifting guide frame 19 via the sliding guide rail 20 and the limit slider 21. The damper 2 is installed in a sliding and telescopic connection with the flue damper 2 via the telescopic groove 24. The damper 21 is locked and fixed to the flue damper 2 via the locking knob 22. This allows for quick and easy disassembly and replacement of the flue damper 2. A damper lifting guide 19 is embedded in the front side of the inner wall of the flue 1, and sliding guide rails 20 are provided on both sides of the inner wall of the damper lifting guide 19. Telescopic grooves 24 are provided at the upper and lower ends of both sides of the flue damper 2, and a knob groove 23 is provided on the front side of the inner wall of the telescopic groove 24. The damper 21 is slidably inserted into the inner wall of the telescopic groove 24, and a locking knob is inserted through the inner wall of the damper 21 and the knob groove 23. Tighten knob 22, limit slider 21 and sliding guide rail 20 are slidably inserted and installed, hoisting cable 4 is installed on the upper end of flue damper 2, and hoisting pulley 3 is slidably installed on the outer wall of hoisting cable 4, support crossbeam 28 is installed on the upper end of inner wall of flue 1, hoisting pulley 3 is vertically installed on the lower end of support crossbeam 28, electric hoist 6 is installed on the other end of hoisting cable 4, and electric hoist 6 is connected to the middle position of the lower end of support crossbeam 28, auxiliary hoisting hook 7 is installed on the lower end of electric hoist 6, and auxiliary hoisting block 5 is hoisted and installed on the lower end of auxiliary hoisting hook 7, and support rod 26 is fixedly connected to the lower end of the inner wall of auxiliary hoisting block 5, and lifting hook is hooked and installed on the outer wall of support rod 26. 25. The lifting hook 25 is a lever structure, and it is installed in a flip-locking manner with the support rod 26 via the release cylinder 8. The lifting cable 4 has a two-set structure, and the other set of the lifting cable 4 is connected to the auxiliary lifting hook 7. This allows the lifting hook 25 to be pneumatically flipped, facilitating stable lifting and opening / closing, and allowing it to fall under its own weight to open the flue damper 2. A support platform 16 is fixedly connected to the middle position on the other side of the inner wall of the flue 1, and a release cylinder 8 is flip-mounted on one side of the upper end of the support platform 16. The output end of the release cylinder 8 is flip-connected to the lifting hook 25, and a duct pipe 9 and an electrical wire 10 are respectively connected and installed on one side of the release cylinder 8.A PLC emergency interlock control system 15 is installed at the other end of the air duct 9 and the electrical wire 10. The PLC emergency interlock control system 15 is fixedly connected to the lower end of the other side of the inner wall of the flue 1. A mounting bracket 12 is fixedly connected to the lower end of the other side of the flue 1, and an air tank 11 is installed on one side of the inner wall of the mounting bracket 12. The air tank 11, the air compressor 13, and the flue damper control system 14 are wrapped around the flue 1 through the mounting bracket 12. This allows the air tank 11, the air compressor 13, and the flue damper control system 14 to be protected by the mounting bracket 12 to avoid damage. The air compressor 13 is installed in the middle of the inner wall of the mounting bracket 12, and the flue damper control system 14 is electrically installed on one side of the air compressor 13. The air tank 11, the air compressor 13, and the PLC are connected. The emergency interlock control system 15 is connected. A counterweight 18 is mounted on the lower end of the auxiliary lifting block 5, and a counterweight guide 17 is fitted onto the outer wall of the counterweight 18. The shape of the counterweight 18 matches the shape of the counterweight guide 17, and the counterweight 18 and counterweight guide 17 are connected in a limited sliding lifting connection. A buffer pad 27 is inserted and spliced ​​with the counterweight guide 17, and the buffer pad 27 is made of rubber. This allows the counterweight 18 to be limited in its lifting and lowering, ensuring stable descent. The buffer pad 27 provides support and cushioning, and facilitates disassembly and replacement. A buffer pad 27 is installed on the lower end of the inner wall of the counterweight guide 17.

[0020] Working principle: When using this coke oven flue gate emergency interlocking lifting device, first assemble and install the device, then use it. Under normal power supply, the electric hoist 6 drives a set of hoisting cables 4 to hoist the flue gate 2, thereby causing the sliding guide rail 20, the limit slider 21, and the gate lifting guide frame 19 to slide and lift open and close. When the coke oven system suddenly loses power, the PLC emergency interlock control system 15 detects the power outage signal, and due to the release cylinder 8 and the PLC... The emergency interlock control system 15 is interlocked. Upon receiving a power outage signal, the unhooking cylinder 8 is activated, causing the lifting hook 25 to flip outward, releasing it from the hook and lifting mechanism 26. Then, the counterweight 18 falls within the counterweight guide frame 17 under its own weight. Subsequently, the flue damper 2 is raised by another set of hoisting cables 4. When the flue damper 2 needs to be replaced, it can be loosened by turning the locking knob 22. Then, the limit slider 21 is retracted inward through the telescopic groove 24 for quick disassembly and assembly. This is the usage process of this coke oven flue damper emergency interlock lifting device.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An emergency interlocking lifting device for a coke oven flue damper, comprising a flue (1), wherein a flue damper (2) is installed on the front side of the flue (1), characterized in that: A gate lifting guide (19) is inlaid on the front side of the inner wall of the flue (1), and sliding guide rails (20) are provided on both sides of the inner wall of the gate lifting guide (19). The upper and lower ends of the flue gate (2) are provided with telescopic grooves (24), and a knob groove (23) is provided on the front side of the inner wall of the telescopic groove (24). A limit slider (21) is slidably inserted into the inner wall of the telescopic groove (24), and a locking knob (22) is inserted through the inner wall of the limit slider (21) and the knob groove (23). The limit slider (21) is slidably inserted into the sliding guide rail (20). A hoisting cable (4) is installed on the upper end of the flue gate (2), and a hoisting pulley (3) is slidably installed on the outer wall of the hoisting cable (4). A support crossbeam (28) is installed on the upper end of the inner wall of the flue (1), and the hoisting pulley (3) is installed perpendicularly to the lower end of the support crossbeam (28). The other end of the hoisting cable (4) is equipped with an electric hoist (6), and the electric hoist (6) is connected to the middle position of the lower end of the support crossbeam (28). The lower end of the electric hoist (6) is equipped with an auxiliary hoisting hook (7), and the lower end of the auxiliary hoisting hook (7) is equipped with an auxiliary hoisting block (5). The lower end of the inner wall of the auxiliary hoisting block (5) is fixedly connected with a support rod (26), and the outer wall of the support rod (26) is hooked with a lifting hook (25). The middle position of the other side of the inner wall of the flue (1) is fixedly connected with a support platform (16), and a hook-off cylinder (8) is flipped and installed on one side of the upper end of the support platform (16). The output end of the hook-off cylinder (8) is flipped and connected to the lifting hook (25), and a gas guide pipe (9) and an electrical wire (10) are respectively connected and installed on one side of the hook-off cylinder (8). The other end of the gas guide pipe (9) and the electrical wire (10) is equipped with a PLC. An emergency interlock control system (15) is fixedly connected to the lower end of the other side of the inner wall of the flue (1). A mounting bracket (12) is fixedly connected to the lower end of the other side of the flue (1). An air tank (11) is installed on one side of the inner wall of the mounting bracket (12). An air compressor (13) is installed in the middle of the inner wall of the mounting bracket (12). A flue damper control system (14) is electrically installed on one side of the air compressor (13). The air tank (11), the air compressor (13) and the PLC emergency interlock control system (15) are connected. A counterweight block (18) is hoisted at the lower end of the auxiliary hoisting block (5). A counterweight block guide frame (17) is fitted on the outer wall of the counterweight block (18). A buffer pad (27) is installed at the lower end of the inner wall of the counterweight block guide frame (17).

2. The emergency interlocking lifting device for a coke oven flue damper according to claim 1, characterized in that: The flue gate (2) is connected to the gate lifting guide (19) in a limited sliding lifting manner through the sliding guide rail (20) and the limiting slider (21).

3. The emergency interlocking lifting device for a coke oven flue damper according to claim 2, characterized in that: The flue gate (2) is installed in a splicing and insertion manner with the gate lifting guide (19) via the sliding guide rail (20) and the limiting slider (21). The limiting slider (21) is slidably telescopically connected to the flue gate (2) via the telescopic groove (24). The limiting slider (21) is locked and fixedly connected to the flue gate (2) via the locking knob (22).

4. The emergency interlocking lifting device for a coke oven flue damper according to claim 3, characterized in that: The gas storage tank (11), air compressor (13), and flue damper control system (14) are installed in a wrapped manner with the flue (1) via mounting bracket (12).

5. The emergency interlocking lifting device for a coke oven flue damper according to claim 4, characterized in that: The shape of the counterweight (18) matches the shape of the counterweight guide (17), and the counterweight (18) and the counterweight guide (17) are connected in a limited sliding lifting connection. The buffer pad (27) is inserted and spliced ​​with the counterweight guide (17), and the buffer pad (27) is made of rubber.

6. The emergency interlocking lifting device for a coke oven flue damper according to claim 5, characterized in that: The lifting hook (25) is a lever structure, and the lifting hook (25) is installed in a flip-locking manner with the support rod (26) through the unhooking cylinder (8). The hoisting cable (4) has two sets of structures, and the other set of the hoisting cable (4) is connected to the auxiliary hoisting hook (7).

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