Slag dredging protection equipment for circulating fluidized bed boiler

Abstract

The embodiment of the invention provides slag dredging protection equipment for a circulating fluidized bed boiler. The protection equipment comprises a portal frame, a protection curtain and a spraying device. The spraying device is arranged on the portal frame and is used for spraying atomized liquid so as to carry out atomization and dust removal treatment on raised dust generated in the slag dredging process; the first end of the protective curtain is arranged on the door type frame, and the protective curtain covers a slag poking opening of a slag discharging pipe of the boiler so as to shield slag materials guided out of the slag poking opening. The protection equipment does not need to wear heat insulation clothes for operation, so that the action of an operator is not limited, and the somatosensory experience of slag poking personnel is relatively good.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of fluidized bed equipment, and specifically relate to a circulating fluidized bed boiler slag removal protection device. Background Art

[0002] The working environment is relatively harsh when the lower slag pipe of the boiler slag cooler is blocked and unblocked (the slag of the circulating fluidized bed boiler to be unblocked is generally around 850℃ to 900℃, and the unblocking position is in the positive pressure area of ​​the furnace pressure. When the lower slag pipe plug door is opened, it is usually accompanied by hot air and hot slag. Due to the high pressure in the boiler, high-speed splashing outward occurs, posing a great threat to the safety of the unblocking personnel). There are electric and pneumatic slag unblocking devices on the market, but due to untimely maintenance, product quality problems, poor device reliability and the influence of harsh on-site operating conditions, there will always (or eventually) be failures or abnormal failures to operate. Manual unblocking is the last line of defense to maintain the safe operation of the unit.

[0003] At present, the only protective device for manual slag dredging in boilers is wearing heat-insulating clothing. The heat-insulating clothing is relatively bulky (protective clothing is basically one-size-fits-all, and people are different in height, weight and body shape. It is particularly wide for thin people and cannot be worn by tall people). It is inconvenient to move after wearing it. In case of emergency, it is easy to trip or other equipment to hook the protective clothing, which brings hidden dangers to the safe escape of slag dredging personnel. After wearing the heat-insulating clothing helmet, the facial heat-proof panel affects the line of sight, and only the 130° angle of view in front can be observed. In addition, the heat-proof panel often fogs up when breathing. Slag dredging personnel are basically unwilling to wear it and would rather operate without protection. The heat-insulating clothing is not breathable, and slag dredging is physical labor. The heat generated by the human body can only be dissipated into the heat-insulating clothing and cannot be exchanged with the outside world. The physical experience of slag dredging personnel is poor.

[0004] Therefore, developing a fluidized bed boiler slag protection device has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a circulating fluidized bed boiler slag protection device.

[0006] One aspect of an embodiment of the present disclosure provides a circulating fluidized bed boiler slag protection device, the protection device comprising a portal frame, a protection curtain and a spray device;

[0007] The spray device is arranged on the portal frame, and is used to spray atomized liquid to atomize and remove dust generated during the slag removal process;

[0008] The first end of the protective curtain is arranged on the door frame, and the protective curtain covers the slag-poking opening of the boiler lower slag pipe to shield the slag material guided out from the slag-poking opening.

[0009] Further, it also includes: a slag blocking plate;

[0010] The slag blocking plate is arranged on the door frame and arranged on the second end of the protective curtain, and is used for shielding the slag material discharged from the slag poking port.

[0011] Optionally, the spray device includes a water inlet pipe and an atomizing nozzle; the water inlet pipe is arranged on the portal frame; along the length direction of the water inlet pipe, a plurality of water spray outlets are arranged at intervals on the water inlet pipe; the atomizing nozzle is arranged corresponding to the water spray outlet, and the atomizing nozzle is used to spray atomized liquid.

[0012] Furthermore, it also includes: a detachable part; the protective curtain is detachably connected to the crossbeam of the portal frame through the detachable part.

[0013] Optionally, the detachable part includes a bolt or a buckle.

[0014] Optionally, the spray device is welded to the crossbeam of the portal frame.

[0015] Furthermore, it also includes: a self-locking wheel, which is arranged on the frame, and the self-locking wheel is used for moving and positioning the frame.

[0016] Furthermore, it also includes: a quick-connect pipe, which is arranged at the water inlet end of the water inlet pipe; wherein the water inlet pipe is connected to the water source through the quick-connect pipe; the quick-connect pipe is used to quickly connect or disconnect the connection between the water inlet pipe and the water source.

[0017] The beneficial effects of the embodiments of the present disclosure include:

[0018] The protective equipment disclosed in the present invention does not require the wearing of heat-insulating clothing during operation, so that the operator's movements are not restricted, and the slag-digging personnel have a better physical experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic structural diagram of a circulating fluidized bed boiler slag removal protection device according to an embodiment of the present invention.

[0020] In the figure, 1, protective curtain; 2, spray device; 3, slag retaining plate; 21, water inlet pipe; 22, water spray outlet. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application 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, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the error tolerance range. "Parallel" is not parallel in the strict sense, but within the error tolerance range.

[0023] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0024] like Figure 1 As shown, a circulating fluidized bed boiler slag removal protection device includes a portal frame (not shown in the figure), a protective curtain 1 and a spray device 2. The spray device 2 is arranged on the portal frame, and the spray device 2 is used to spray an atomized liquid to atomize and remove dust generated during the slag removal process. The first end of the protective curtain 1 is arranged on the portal frame, and the protective curtain 1 covers the slag poking port of the boiler lower slag pipe to block the slag material discharged from the slag poking port. During operation, the operator can perform the slag poking operation through the protective curtain 1, and the protective curtain 1 can effectively provide protection to ensure the safety of the operator.

[0025] The protective equipment disclosed in the present invention does not require the wearing of heat-insulating clothing during operation, so that the operator's movements are not restricted, and the slag-digging personnel have a better physical experience.

[0026] In some embodiments, the protective device further includes a slag blocking plate 3, which is disposed on the portal frame and arranged at the second end of the protective curtain 1 to shield the slag discharged from the slag poking port.

[0027] In the present disclosure, the addition of the slag blocking plate 3 further blocks the slag material discharged from the slag poking port, improves the shielding effect of the protective curtain 1, ensures that the slag material does not splash outside the boiler, and protects the surrounding environment and equipment. Through the shielding of the slag blocking plate 3, the risk of slag splashing is reduced, the safety of the operator is protected, and the accident rate is reduced. The slag blocking plate 3 can effectively reduce the slag material from splashing onto the ground and other equipment outside the boiler, reduce the workload of cleaning and maintenance, and improve work efficiency.

[0028] In some embodiments, the spray device 2 includes a water inlet pipe 21 and an atomizing nozzle (not shown in the figure), and the water inlet pipe 21 is arranged on the door frame. Along the length direction of the water inlet pipe 21, a plurality of water spray ports 22 are arranged on the water inlet pipe 21 at intervals, and the atomizing nozzle is correspondingly arranged at the water spray ports 22, and the atomizing nozzle is used to spray the atomized liquid.

[0029] In the present disclosure, the atomized liquid sprayed by the atomizing nozzle can effectively capture and settle the dust generated during the slag sludge removal process, significantly reduce the dust content in the air, and improve the working environment. The multiple water spray ports 22 and the corresponding atomizing nozzles arranged at intervals on the water inlet pipe 21 ensure the uniform distribution of the spray, improve the coverage and effect of the spray, and further improve the dust removal efficiency. The atomizing nozzle atomizes water into fine droplets, which can more effectively utilize water resources, reduce water consumption, and ensure a good dust removal effect. By reducing dust, boilers and other equipment can be protected from dust erosion and pollution, extend the service life of the equipment, and reduce maintenance costs. Effectively reducing dust can improve the visibility of the operation site, reduce the risk of operators inhaling dust, and improve operational safety.

[0030] In some embodiments, the protective device further comprises a detachable member (not shown in the figure). The protective curtain 1 is detachably connected to the crossbeam of the portal frame via the detachable member.

[0031] In the present disclosure, the design of the detachable parts allows the protective curtain 1 to be easily disassembled and reinstalled, which simplifies the installation and maintenance process, reduces the labor intensity of workers, and improves work efficiency. The detachable design allows the protective curtain 1 to be adjusted or replaced according to actual needs, improves the flexibility and adaptability of the equipment, and is suitable for different working environments and needs. Through the detachable parts, the protective curtain 1 can be replaced in time when it is damaged or needs to be cleaned, avoiding the high cost of replacing the entire equipment and extending the service life of the equipment.

[0032] In some embodiments, the detachable member includes a bolt or a snap.

[0033] In the present disclosure, bolts or buckles are used as detachable parts, so that the installation and removal process of the protective curtain 1 is simple and quick, the labor intensity of workers is reduced, and the work efficiency is improved.

[0034] In some embodiments, the spray device is welded to the crossbeam of the portal frame.

[0035] In the present disclosure, the spray device is integrated with the crossbeam of the portal frame by welding, which greatly improves the stability and firmness of the spray device and ensures that it will not loosen or fall off due to vibration or external force during the slag removal process. The firm fixing method reduces the risk of failure of the spray device during operation, improves the safety of the equipment, and protects the safety of operators and surrounding equipment.

[0036] In some embodiments, the protective device further includes a self-locking wheel (not shown in the figure), which is disposed on the frame and is used for movement and positioning of the frame.

[0037] In the present disclosure, the self-locking wheels allow the entire protective device to be easily moved, especially in situations where frequent position adjustment is required, such as switching between different boilers or equipment maintenance, which greatly improves the convenience of operation. The self-locking wheels have a locking function, and after the device is moved to a specified position, the wheels can be fixed through a locking mechanism to ensure that the device will not slide or shift during operation, thereby improving the stability and reliability of the device.

[0038] In some embodiments, the protective device also includes a quick-connect pipe (not shown in the figure), which is arranged at the water inlet end of the water inlet pipe, wherein the water inlet pipe is connected to the water source through the quick-connect pipe, and the quick-connect pipe is used to quickly connect or disconnect the connection between the water inlet pipe and the water source.

[0039] In the present disclosure, the design of the quick-connect pipe makes the connection and disconnection between the water inlet pipe and the water source quick and easy, reduces the time and labor intensity of installation and maintenance, and improves work efficiency. The use of the quick-connect pipe allows the equipment to quickly switch between different water sources, improves the flexibility and adaptability of the equipment, and is suitable for different working environments and needs.

[0040] A specific example provided by the present disclosure includes:

[0041] The protective device disclosed in the present invention adopts a portal frame steel structure. The height of the portal frame is slightly higher than the slag opening of the slag cooler. A protective curtain is arranged on the crossbeam of the steel frame. The curtain is in the style of a flame-retardant belt and droops naturally to cover the slag opening. When in use, the portal frame is placed in front of the slag lowering pipe. The operator is located on the side of the protective curtain away from the boiler and performs the slag clearing operation. The hot slag sprayed out of the slag lowering pipe is blocked by the flame-retardant belt to avoid direct splashing on the operator and causing local burns.

[0042] A 50CM slag retaining plate is set upward at the part flush with the ground below the portal frame steel structure. The slag retaining plate effectively isolates the operators from the hot slag pile below the slag lowering pipe to prevent excessive slag from flowing downward during slag discharge, causing burns to the operators' feet and legs.

[0043] The protective equipment disclosed in the present invention has a spray dust removal function, and the spray device includes a matching water inlet pipe, a spray head and a quick-connect pipe to connect to an industrial water source or a domestic water source system. When slag is being shoveled, the spray device is turned on to effectively suppress dust in the construction area and prevent on-site construction workers from inhaling it.

[0044] Self-locking wheels are installed under the portal frame. The self-locking wheels are universal wheels with a locking function. When in use, the protective equipment is pushed to the construction site using the self-locking wheels and the wheels are locked. When not in use, it is convenient to store it in a designated location.

[0045] The beneficial effects of the protective equipment disclosed in the present invention include: 1. Low equipment cost; 2. Effective protection for slag dredging personnel; 3. Improvement of the quality of the civilized construction environment on site; 4. The equipment is easy and convenient to move, can be shared by multiple boilers, and has long-term economic benefits.

[0046] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A circulating fluidized bed boiler slag protection device, characterized in that: The protective equipment includes a portal frame, a protective curtain and a spray device; The spray device is arranged on the portal frame, and is used to spray atomized liquid to atomize and remove dust generated during the slag removal process; The first end of the protective curtain is arranged on the door frame, and the protective curtain covers the slag-poking opening of the boiler lower slag pipe to shield the slag material guided out from the slag-poking opening.

2. The circulating fluidized bed boiler slag protection device according to claim 1, characterized in that: Also includes: Slag retaining plate; The slag blocking plate is arranged on the door frame and arranged on the second end of the protective curtain, and is used for shielding the slag material discharged from the slag poking port.

3. The circulating fluidized bed boiler slag protection device according to claim 1, characterized in that: The spray device includes a water inlet pipe and an atomizing nozzle; the water inlet pipe is arranged on the portal frame; along the length direction of the water inlet pipe, a plurality of water spraying ports are arranged on the water inlet pipe at intervals; the atomizing nozzle is arranged corresponding to the water spraying ports, and the atomizing nozzle is used to spray atomized liquid.

4. The circulating fluidized bed boiler slag protection device according to claim 1, characterized in that: Also includes: Removable parts; The protective curtain is detachably connected to the crossbeam of the portal frame through the detachable member.

5. The circulating fluidized bed boiler slag protection device according to claim 4, characterized in that: The detachable part includes a bolt or a buckle.

6. The circulating fluidized bed boiler slag protection device according to claim 1, characterized in that: The spray device is welded to the crossbeam of the portal frame.

7. The circulating fluidized bed boiler slag protection device according to claim 1, characterized in that: Also includes: A self-locking wheel is arranged on the frame, and the self-locking wheel is used for moving and positioning the frame.

8. The circulating fluidized bed boiler slag protection device according to claim 3, characterized in that: Also includes: A quick-connect pipe is arranged at the water inlet end of the water inlet pipe; wherein the water inlet pipe is connected to a water source through the quick-connect pipe; the quick-connect pipe is used to quickly connect or disconnect the connection between the water inlet pipe and the water source.

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