System for realizing door closing operation of boiler dry-type slag extractor

Abstract

The utility model discloses a system for realizing door closing operation of a boiler dry-type slag extractor, which relates to the technical field of dry-type slag extractors and comprises a dry-type slag extractor and a slag hopper, and vertical plates connected with the dry-type slag extractor are arranged on the front side and the rear side of the bottom of the slag hopper. A temperature field and image materials in the slag hopper are obtained through the double-spectrum thermal imaging camera, image recognition and temperature field judgment are conducted through the image recognition and analysis module, the current working condition in the slag hopper is analyzed, then an instruction is output through the equipment control system to control the first hydraulic cylinder to open and close the closing door, and intelligent slag discharging is conducted according to the working condition in the slag hopper. According to the dry-type slag extractor, closed-door operation is achieved, the smoke exhaust temperature can be reduced, air leakage can be reduced, the furnace efficiency and the follow-up smoke environment-friendly treatment efficiency are improved, the operation time of equipment such as a steel belt, a sweeping chain and a slag crusher on the dry-type slag extractor is shortened through intermittent operation, equipment abrasion can be reduced, the service life of the equipment can be prolonged, and therefore the overhaul cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dry slag discharge machine technology, specifically a system for realizing closed-door operation of a boiler dry slag discharge machine. Background Technology

[0002] Dry ash dischargers are equipment used for treating bottom ash in pulverized coal furnaces, specifically for cooling and transporting hot ash. By installing ash wells and ash bins before and after the dry ash discharger, a complete dry ash discharge system can be formed.

[0003] A search revealed that CN203797674U discloses a pulverized coal boiler ash and slag burnout removal device. During normal boiler operation, the large slag crushing and shut-off device is always open, and the ash and slag fall into the burnout conveyor belt in the ash discharge chamber through the expansion joint. The shut-off door of this technical solution is always open during boiler operation, which increases air leakage and flue gas temperature, thereby affecting boiler efficiency. In addition, it causes the structure on the dry ash discharge machine below to be in a continuous operating state, which also increases equipment wear and reduces equipment service life. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a system for realizing closed-door operation of a boiler dry slag discharge machine, thus solving the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a system for realizing the closed-door operation of a boiler dry slag discharge machine, including a dry slag discharge machine and a slag hopper, wherein vertical plates connected to the dry slag discharge machine are provided on both the front and rear sides of the bottom of the slag hopper.

[0006] Both ends of the dry slag discharge machine are equipped with supports, and hydraulic cylinder one and hydraulic cylinder two are installed on the supports. The piston rod of hydraulic cylinder one is connected to a shut-off valve, and the piston rod of hydraulic cylinder two is equipped with a coke extrusion assembly.

[0007] The slag hopper is equipped with a dual-spectrum thermal imaging camera and a fixed tube, with the dual-spectrum thermal imaging camera facing the fixed tube.

[0008] The dual-spectrum thermal imaging camera is electrically connected to the image recognition and analysis module, the image recognition and analysis module is electrically connected to the equipment control system, and the equipment control system is electrically connected to hydraulic cylinder one and hydraulic cylinder two respectively.

[0009] Preferably, the coking assembly includes a connecting frame connected to the second piston rod of the hydraulic cylinder. A fixing plate is provided on the connecting frame. The top of the fixing plate is in contact with the slag hopper. The bottom of the fixing plate and the connecting frame are both in contact with the shut-off door. Through grooves and protruding plates are evenly provided on the fixing plate. Bolts are provided on the protruding plates. A fixing block is attached to the through groove. A serrated block and a positioning plate are provided on the fixing block. The positioning plate is connected to the bolts. A lifting lug is provided on the top of the positioning plate.

[0010] Preferably, the top of each of the two fixing plates at the ends furthest from each other is connected to a top plate, and the bottom plate is provided at the ends of the two connecting frames at the ends furthest from each other.

[0011] Preferably, the connecting frame is provided with a one-way lead screw assembly, and a slider that slides on the connecting frame is screwed onto the one-way lead screw assembly. An electric push rod is provided on the slider, and a placement plate is provided on the output end of the electric push rod. The top of the placement plate contacts one of the positioning plates, and a two-way lead screw assembly is provided on the placement plate. Both output ends of the two-way lead screw assembly are screwed onto clamps that slide on the placement plate, and the clamps contact one of the positioning plates.

[0012] Preferably, the slag hopper is equipped with a slag hopper temperature sensor, and the dry slag discharger is equipped with a steel belt temperature sensor. Both the slag hopper temperature sensor and the steel belt temperature sensor are electrically connected to the equipment control system. The equipment control system electrically outputs an emergency ventilation and cooling system and an emergency spray system, respectively.

[0013] Preferably, both the emergency ventilation and cooling system and the emergency spray system are equipped with pipes that connect to the dry slag discharge machine and the slag hopper.

[0014] Beneficial effects

[0015] This invention provides a system for achieving closed-door operation of a boiler dry ash removal machine. Compared with the prior art, it has the following advantages:

[0016] 1. This system enables closed-door operation of the boiler dry ash removal machine. It acquires temperature field and image data inside the ash hopper using a dual-spectrum thermal imaging camera. The image recognition and analysis module performs image recognition and temperature field judgment to analyze the current working conditions inside the ash hopper. Then, the equipment control system outputs commands to control the hydraulic cylinder to open and close the door. Based on the working conditions inside the ash hopper, intelligent ash removal is performed to achieve closed-door operation. This can reduce flue gas temperature and reduce air leakage, thereby improving furnace efficiency and the efficiency of subsequent flue gas environmental protection treatment. Furthermore, intermittent operation reduces the operating time of equipment such as steel belts, cleaning chains, and ash crushers on the dry ash removal machine, which can reduce equipment wear, extend equipment service life, and thus reduce maintenance costs.

[0017] 2. This system enables the closed-door operation of the boiler dry slag discharge machine. When large coke blocks appear above the shut-off door and cannot fall freely onto the steel belt of the dry slag discharge machine, the coke extrusion assembly can be driven by two hydraulic cylinders to move in opposite directions for extrusion. Each sawtooth block can be disassembled and installed individually so that the whole assembly does not need to be replaced when a single block is damaged. By setting up a one-way screw assembly, an electric push rod, and a two-way screw assembly, the clamping plate can hold the positioning plate at different positions and move laterally, so as to facilitate the disassembly and assembly of heavy positioning plates, fixing blocks, and sawtooth blocks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the principle of this utility model;

[0020] Figure 3 This is a schematic diagram of the coking assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the unidirectional lead screw assembly, electric push rod, and placement plate of this utility model.

[0022] In the diagram: 1. Dry slag remover; 2. Slag hopper; 3. Vertical plate; 4. Shut-off gate; 5. Hydraulic cylinder one; 6. Hydraulic cylinder two; 7. Dual-spectrum thermal imaging camera; 8. Fixed pipe; 9. Image recognition and analysis module; 10. Equipment control system; 11. Slag hopper temperature sensor; 12. Steel strip temperature sensor; 13. Emergency ventilation and cooling system; 14. Emergency sprinkler system; 15. Connecting frame; 16. Fixed plate; 17. Through slot; 18. Protruding plate; 19. Bolt; 20. Fixed block; 21. Serrated block; 22. Positioning plate; 23. Top plate; 24. Bottom plate; 25. One-way screw assembly; 26. Sliding block; 27. Electric push rod; 28. Placement plate; 29. ​​Two-way screw assembly; 30. Clamping plate; 31. Lifting lug. Detailed Implementation

[0023] 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.

[0024] See Figures 1-4 This utility model provides the following two technical solutions:

[0025] First implementation: A system for realizing closed-door operation of boiler dry slag discharge machine, including dry slag discharge machine 1 and slag hopper 2, with vertical plates 3 connected to dry slag discharge machine 1 on both the front and rear sides of the bottom of slag hopper 2.

[0026] Both ends of the dry slag discharge machine 1 are equipped with supports, and hydraulic cylinder 5 and hydraulic cylinder 6 are installed on the supports. The piston rod of hydraulic cylinder 5 is connected to the shut-off door 4. The shut-off door 4 is in contact with the vertical plate 3 on both the front and rear sides. The piston rod of hydraulic cylinder 6 is equipped with a coking assembly.

[0027] The slag hopper 2 is equipped with a dual-spectrum thermal imaging camera 7 and a fixed tube 8, with the dual-spectrum thermal imaging camera 7 facing the fixed tube 8. It is used to monitor the interior of the slag hopper through thermal imaging through the fixed tube 8. Through thermal imaging technology, it overcomes the shortcomings of ordinary cameras that cannot penetrate dust, and the image is clear. It has a built-in temperature field display, which can intuitively show the temperature distribution under various measurement scenarios.

[0028] The dual-spectrum thermal imaging camera 7 is electrically connected to the image recognition and analysis module 9, which in turn is electrically connected to the equipment control system 10. The equipment control system 10 is electrically connected to hydraulic cylinder 5 and hydraulic cylinder 6 respectively. The dual-spectrum thermal imaging camera 7 acquires the temperature field and image data inside the slag hopper 2. The image recognition and analysis module 9 performs image recognition and temperature field judgment to analyze the current working conditions inside the slag hopper. It can also be used in conjunction with an endoscopic high-temperature resistant three-dimensional imaging electromagnetic wave radar to improve the acquisition of the working conditions inside the slag hopper. Then, the equipment control system 10 outputs commands to control hydraulic cylinder 5 to open and close the shut-off door 4.

[0029] The coking assembly includes a connecting frame 15 connected to the piston rod of hydraulic cylinder 2 6. A fixing plate 16 is provided on the connecting frame 15. The top of the fixing plate 16 is in contact with the slag hopper 2. The bottom of the fixing plate 16 and the connecting frame 15 are both in contact with the shut-off door 4 and the front and rear vertical plates 3. The fixing plate 16 is evenly provided with through grooves 17 and protruding plates 18. Bolts 19 are provided on the protruding plates 18. A fixing block 20 is attached to the through groove 17. A serrated block 21 and a positioning plate 22 are provided on the fixing block 20. The positioning plate 22 is connected to the bolts 19, so that the serrated block 21 can be disassembled and installed separately, so that the whole assembly does not need to be replaced when damaged. For easy removal, a lifting lug 31 is provided on the top of the positioning plate 22.

[0030] When a large coke block appears above the shut-off gate 4 and cannot fall freely onto the steel belt on the dry slag discharge machine 1, the sawtooth blocks 21 on the coke extrusion assembly can be driven by hydraulic cylinder 2 6 to move towards each other for extrusion.

[0031] Top plates 23 are connected to the top of the two fixed plates 16 at the ends away from each other, and bottom plates 24 are provided at the ends of the two connecting frames 15 at the ends away from each other. When the fixed plates 16 move laterally to squeeze coke through the sawtooth blocks 21, the top plates 23 move at the bottom of the slag hopper 2, and the bottom plates 24 move on the shut-off door 4, which can prevent hot slag from falling to the outside.

[0032] The applicant found that although a crane could be used to disassemble and assemble the sawtooth block 21, it was still quite difficult to move it in and out of the through slot 17. Therefore, a one-way screw assembly 25 was installed on the connecting frame 15. A slider 26 that slides on the connecting frame 15 was screwed onto the one-way screw assembly 25. An electric push rod 27 was installed on the slider 26. A placement plate 28 was installed on the output end of the electric push rod 27. The top of the placement plate 28 contacted one of the positioning plates 22. A two-way screw assembly 29 was installed on the placement plate 28. Clamping plates 30 that slide on the placement plate 28 were screwed onto both output ends of the two-way screw assembly 29. The clamping plates 30 contacted one of the positioning plates 22. The slider 26 was moved by the one-way screw assembly 25, so that the placement plate 28 moved to the bottom of the corresponding positioning plate 22. Then, it was clamped by the clamping plates 30. The final disassembly and assembly distance could be completed by the extension and retraction of the electric push rod 27.

[0033] The second implementation differs from the first implementation in that: a slag hopper temperature sensor 11 is installed on the slag hopper 2, and a steel strip temperature sensor 12 is installed on the dry slag discharger 1. Both the slag hopper temperature sensor 11 and the steel strip temperature sensor 12 are electrically connected to the equipment control system 10. The equipment control system 10 electrically outputs an emergency ventilation and cooling system 13 and an emergency spray system 14, respectively. Both the emergency ventilation and cooling system 13 and the emergency spray system 14 are equipped with pipes that connect to the dry slag discharger 1 and the slag hopper 2. When the temperature of the steel strip of the dry slag discharger 1 is too high or there is a large amount of slag accumulation in the slag hopper 2 and the temperature is too high, the emergency ventilation and cooling system 13 and the emergency spray system can be activated, and then cold air and spray cooling water can be sent in through the corresponding pipes.

[0034] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0035] In use, the dual-spectrum thermal imaging camera 7 acquires temperature field and image data inside the slag hopper 2. The image recognition and analysis module 9 performs image recognition and temperature field judgment to analyze the current working conditions inside the slag hopper 2. Then, the equipment control system 10 outputs commands to control the hydraulic cylinder 5 to open and close the shut-off door 4. Based on the working conditions inside the slag hopper 2, intelligent slag discharge is carried out to achieve closed-door operation. This can effectively reduce the amount of air entering the boiler from the dry slag discharge machine 1, reduce the flue gas temperature, and reduce air leakage, thereby improving the furnace efficiency and the efficiency of subsequent flue gas environmental protection treatment. Moreover, the intermittent operation reduces the operating time of equipment such as steel belts, cleaning chains, and slag crushers on the dry slag discharge machine, which can reduce equipment wear, extend equipment service life, and thus reduce maintenance costs. The dual-spectrum thermal imaging camera 7 continuously acquires the temperature field and image data inside the slag hopper 2. After the door is opened, when a large coke block appears above the shut-off door 4 and cannot fall freely onto the steel belt on the dry slag discharge machine 1, the equipment control system 10 drives the sawtooth blocks 21 on the coke extrusion assembly to move towards each other to extrude the coke through the hydraulic cylinder 2 6. Each sawtooth block can be disassembled and installed individually so that the whole assembly does not need to be replaced when a single block is damaged. When disassembling and installing individually, the movement of the clamping plate 30 can be used to save effort.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for realizing closed-door operation of a boiler dry ash removal machine, characterized in that: It includes a dry slag discharge machine (1) and a slag hopper (2), and the slag hopper (2) is provided with vertical plates (3) connected to the dry slag discharge machine (1) on both the front and rear sides of the bottom of the bottom; The dry slag discharge machine (1) is equipped with supports at both ends, and hydraulic cylinder one (5) and hydraulic cylinder two (6) are provided on the supports. The piston rod of hydraulic cylinder one (5) is connected to the shut-off door (4), and the piston rod of hydraulic cylinder two (6) is equipped with a coking assembly. The slag hopper (2) is equipped with a dual-spectrum thermal imaging camera (7) and a fixed tube (8), and the dual-spectrum thermal imaging camera (7) and the fixed tube (8) are opposite to each other. The dual-spectrum thermal imaging camera (7) is electrically connected to the image recognition and analysis module (9), the image recognition and analysis module (9) is electrically connected to the equipment control system (10), and the equipment control system (10) is electrically connected to hydraulic cylinder one (5) and hydraulic cylinder two (6).

2. The system for realizing closed-door operation of a boiler dry slag discharge machine according to claim 1, characterized in that: The coking assembly includes a connecting frame (15) connected to the piston rod of hydraulic cylinder 2 (6). A fixing plate (16) is provided on the connecting frame (15). The top of the fixing plate (16) is in contact with the slag hopper (2). The bottom of the fixing plate (16) and the connecting frame (15) are both in contact with the shut-off door (4). A through groove (17) and a protruding plate (18) are evenly provided on the fixing plate (16). A bolt (19) is provided on the protruding plate (18). A fixing block (20) is attached to the through groove (17). A serrated block (21) and a positioning plate (22) are provided on the fixing block (20). The positioning plate (22) is connected to the bolt (19). A lifting lug (31) is provided on the top of the positioning plate (22).

3. The system for realizing closed-door operation of a boiler dry ash removal machine according to claim 2, characterized in that: The top of each of the two fixed plates (16) at the opposite ends is connected to a top plate (23), and the bottom plate (24) is provided at the opposite ends of each of the two connecting frames (15).

4. A system for realizing closed-door operation of a boiler dry slag discharge machine according to claim 2, characterized in that: A one-way screw assembly (25) is provided on the connecting frame (15). A slider (26) that slides on the connecting frame (15) is screwed onto the one-way screw assembly (25). An electric push rod (27) is provided on the slider (26). A placement plate (28) is provided on the output end of the electric push rod (27). The top of the placement plate (28) is in contact with one of the positioning plates (22). A two-way screw assembly (29) is provided on the placement plate (28). Clamping plates (30) that slide on the placement plate (28) are screwed onto both output ends of the two-way screw assembly (29). The clamping plates (30) are in contact with one of the positioning plates (22).

5. A system for realizing closed-door operation of a boiler dry slag discharge machine according to claim 1, characterized in that: The slag hopper (2) is equipped with a slag hopper temperature sensor (11), and the dry slag discharge machine (1) is equipped with a steel strip temperature sensor (12). The slag hopper temperature sensor (11) and the steel strip temperature sensor (12) are electrically connected to the equipment control system (10). The equipment control system (10) electrically outputs an emergency ventilation and cooling system (13) and an emergency spray system (14).

6. A system for realizing closed-door operation of a boiler dry ash removal machine according to claim 5, characterized in that: Both the emergency ventilation and cooling system (13) and the emergency spray system (14) are equipped with pipes that connect to the dry slag discharge machine (1) and the slag hopper (2).

Images