Wide-load dedusting and demisting device

Abstract

The utility model relates to a wide-load dedusting and demisting device which comprises a shell, a hollow mounting rack, a guide post, an air flotation cylinder assembly and a cyclone impeller, the shell is vertically arranged, the upper end and the lower end of the shell are open, the cyclone impeller is rotatably arranged in the lower end opening, the mounting rack is detachably arranged in the upper end opening of the shell, and the guide post is arranged in the air flotation cylinder assembly. The air flotation cylinder assembly comprises a fixed cylinder and a floating cylinder, the upper end and the lower end of the fixed cylinder are open, the inner wall of the fixed cylinder is assembled with the guide column through a hollow connecting frame connected with the fixed cylinder, an air outlet is formed in the upper portion of the side wall of the fixed cylinder, and the lower end of the fixed cylinder is close to the cyclone impeller. And a sliding sleeve is arranged at the top of the floating cylinder, the guide column is sleeved with the sliding sleeve in a sliding mode, and the floating cylinder can move up and down under the action of external force to open or shield the air outlet. The air flotation cylinder assembly is convenient to disassemble and assemble and easy to maintain in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke filtering, in particular to a wide-load dust and mist removal device. Background Art

[0002] Thermal power units have long been the mainstay of my country's electric energy and have been widely used in energy allocation and application. Under the current new situation of energy reform, in order to cooperate with my country's energy structure adjustment, thermal power units, with their unique advantages of stable control and rapid response, need to undertake the task of comprehensive energy allocation, that is, deep peak regulation. Deep peak regulation not only requires coal-fired units to make technical adjustments in boiler stable combustion, steam turbines, auxiliary equipment, etc., but also brings impacts and challenges to the operation of environmental protection equipment. In the technical process of deep purification of particulate matter in wet flue gas desulfurization, the deep peak regulation process brings about a large change in flue gas volume, which conflicts with the relatively narrow operating flow rate requirements of flue gas dust removal and demisting equipment after wet flue gas desulfurization.

[0003] The prior art (CN 217472927 U) discloses a wide-load dust removal and mist removal device, which can adaptively adjust the flow rate of flue gas, but the components inside the shell are not simple to install, and the subsequent inspection and maintenance are difficult, and it is not easy to disassemble and assemble. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wide-load dust and mist removal device, which effectively overcomes the defects of the prior art.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A wide-load dust and mist removal device comprises an outer shell, a hollow mounting frame, a guide column, an air float cylinder assembly and a cyclone impeller. The outer shell is vertically arranged, and its upper and lower ends are open, and the cyclone impeller is rotatably provided in the lower end opening, the mounting frame is detachably installed in the upper end opening of the outer shell, the guide column vertically penetrates the middle part of the mounting frame and extends downward, the air float cylinder assembly comprises a fixed cylinder and a floating cylinder, the upper and lower ends of the fixed cylinder are open, and the inner wall of the fixed cylinder is assembled with the guide column through a hollow connecting frame connected thereto, an air outlet is provided on the upper part of the side wall of the fixed cylinder, and its lower end is close to the cyclone impeller, the lower end of the floating cylinder is open, and is sleeved on the outside of the fixed cylinder, a sliding sleeve is provided on the top of the floating cylinder, and the sliding sleeve is slidably sleeved on the outside of the guide column, and the floating cylinder can move up and down under the action of external force to open or cover the air outlet.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a limit block is provided at the upper end of the guide column, and the floating cylinder can slide upward under the action of external force until the sliding sleeve abuts against the limit block, thereby opening the air outlet.

[0009] Furthermore, the above-mentioned limit block is annular and is sleeved outside the above-mentioned guide column, and is connected and assembled with the above-mentioned guide column by bolts that penetrate it horizontally.

[0010] Furthermore, a plurality of mounting plates that fit the inner wall of the shell are provided at intervals along the circumferential direction on the periphery of the mounting frame, and the mounting plates are connected to the side wall of the shell by bolts penetrating therethrough.

[0011] Furthermore, an annular supporting portion is provided on the inner wall of the upper end of the shell, and the periphery of the mounting frame is supported on the upper end of the supporting portion.

[0012] Furthermore, the connecting frame includes a fixing ring and a plurality of connecting rods. The fixing ring is fixedly mounted outside the guide column. The plurality of connecting rods are spaced apart along the circumference of the fixing ring. Both ends of the connecting rods are respectively fixedly connected to the fixing ring and the inner wall of the fixing tube.

[0013] Furthermore, a circle of buffer gasket is provided at the upper end of the fixing tube.

[0014] Furthermore, the fixed cylinder includes a main cylinder body, multiple vertical beams and a connecting ring. The multiple vertical beams are vertically fixed to the upper end of the main cylinder body. The connecting ring is connected and fixed to the upper ends of the multiple vertical beams. The air outlet is defined between two adjacent vertical beams.

[0015] Furthermore, the guide column is a hollow column, nozzles are provided on the side wall at intervals up and down, and at least one or more of the nozzles are located inside the air float assembly, and the upper end of the guide column is connected to a flushing interface.

[0016] Furthermore, the upper end of the guide column is bent transversely to the outside of the shell, and the upper end of the side wall of the shell is provided with a notch for fitting into the bent portion of the upper end of the guide column.

[0017] The utility model has the following beneficial effects: the structural design is simple and reasonable; the air float cylinder assembly is convenient to disassemble and assemble, and is easy to overhaul and maintain later; the air float cylinder body can adaptively adjust the flow rate through the cyclone impeller according to the flue gas volume, thereby ensuring the overall stable dust removal and demisting efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the wide-load dust and mist removal device of the utility model;

[0019] Figure 2 It is a structural schematic diagram of another embodiment of the wide-load dust and mist removal device of the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Shell; 2. Mounting frame; 3. Guide column; 4. Air float cylinder assembly; 5. Cyclone impeller; 11. Support part; 21. Mounting plate; 31. Limit block; 32. Nozzle; 33. Flushing interface; 41. Fixed cylinder; 42. Floating cylinder; 43. Connecting frame; 411. Main cylinder body; 412. Vertical beam; 413. Connecting ring; 421. Sliding sleeve; 431. Fixed ring; 432. Connecting rod; 4111. Buffer washer. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] Example: Figure 1 As shown, the wide-load dust and mist removal device of this embodiment includes a housing 1, a hollow mounting frame 2, a guide column 3, an air float assembly 4 and a cyclone impeller 5. The housing 1 is vertically arranged, and its upper and lower ends are both open, and the cyclone impeller 5 is rotatably arranged in the lower end opening. The mounting frame 2 is detachably installed in the upper end opening of the housing 1. The guide column 3 vertically penetrates the middle of the mounting frame 2 and extends downward. The air float assembly 4 includes a fixed cylinder 41 and a floating cylinder 42. The fixed cylinder 41 The upper and lower ends are both open, and the inner wall is assembled with the guide column 3 through a hollow connecting frame 43 connected thereto. An air outlet (indicated by A in the figure) is provided on the upper part of the side wall of the fixed cylinder 41, and the lower end thereof is close to the cyclone impeller 5. The lower end of the floating cylinder 42 is open and is sleeved on the outside of the fixed cylinder 41. A sliding sleeve 421 is provided on the top of the floating cylinder 42. The sliding sleeve 421 is slidably sleeved on the outside of the guide column 3. The floating cylinder 42 can move up and down under the action of external force to open or cover the air outlet.

[0024] The usage process is as follows:

[0025] This device is installed above the spray layer of the wet desulfurization absorption tower of the thermal power peak-shaving unit as a deep purification device for flue gas particles and droplets. The wide-load dust removal and demisting device covers the cross section of the desulfurization absorption tower, forming a wide-load dust removal and demisting device layer. The bottom of the device layer is about 2 meters above the spray layer at the top of the absorption tower. The flue gas purified by desulfurization carries unpurified particles and slurry spray droplets from below and passes through the wide-load dust removal and demisting device layer. When the flue gas reaches the wide-load dust removal and demisting device, its flow field is divided into two modes according to the different flue gas flow rates.

[0026] 1) Low load and low flue gas flow rate: When the flue gas flow rate is lower than 3m / s, due to the deadweight of the floating cylinder 42, the pressure of the flue gas after entering the fixed cylinder 41 will not cause the floating cylinder 42 to float upward. When the flue gas passes through the cyclone impeller 5, it is blocked by the floating cylinder 42 and cannot flow through the floating cylinder 42. All the flue gas is directed to the annular cavity between the air floating cylinder assembly 4 and the shell 1. The cross-sectional area of ​​this annular cavity is about half of the cross-sectional area of ​​the shell 1. Therefore, when the flue gas passes through the cyclone impeller 5, its vertical speed increases (nearly doubled). At this speed, the particles and droplets mixed in the flue gas can be effectively accelerated, collided, condensed, and intercepted.

[0027] 2) High load and high flue gas flow rate. The flue gas dynamic pressure is greater, which can support the weight of the floating cylinder 42, so that the floating cylinder 42 floats upward. During the upward floating process, the air outlet on the upper part of the fixed cylinder 41 will be fully opened. At this time, the flue gas can pass through the cavities inside and outside the fixed cylinder 41 at the same time. Specifically, the inner flue gas returns to the original flow field through the air outlet on the upper part of the fixed cylinder 41. The flue gas can complete swirl, acceleration, collision, condensation, and interception on both sides of the cyclone impeller 5 at a uniform speed.

[0028] In this embodiment, the total area of ​​the air outlets should be larger than the cross-sectional area of ​​the fixing tube 41 .

[0029] As a preferred embodiment, a limit block 31 is provided at the upper end of the guide column 3, and the floating cylinder 42 can slide upward under the action of external force until the sliding sleeve 421 abuts against the limit block 31, thereby opening the air outlet.

[0030] In the above implementation scheme, a limit block 31 is provided at the upper end of the guide column 3. When the floating cylinder 42 floats upward under the smoke pressure, when it floats to abut against the limit block 31, the lower end of the floating cylinder 42 does not separate from the upper end of the fixed cylinder 41, but the air outlet is in a fully open state, ensuring that the floating cylinder 42 can subsequently fall back smoothly under its own weight.

[0031] In this embodiment, the outer wall of the fixed cylinder 41 is close to or in contact with the inner wall of the floating cylinder 42 , and a small gap therebetween.

[0032] In this embodiment, the stop block 31 is annular and is mounted outside the guide column 3, and is connected and assembled with the guide column 3 by bolts that penetrate the stop block 31 transversely. The stop block 31 is relatively simple to disassemble and assemble, and only the bolts need to be disassembled and assembled.

[0033] In this embodiment, a plurality of mounting pieces 21 are provided at intervals along the circumferential direction on the outer periphery of the mounting frame 2 to fit the inner wall of the housing 1. The mounting pieces 21 are connected to the side wall of the housing 1 by bolts passing through them. The mounting frame 2 is relatively simple and quick to assemble.

[0034] In this embodiment, the upper inner wall of the housing 1 is provided with an annular support portion 11, and the periphery of the mounting frame 2 is supported on the upper end of the support portion 11. The design of the support portion 11 can limit the positioning and installation of the mounting frame 2, simplifying the installation difficulty.

[0035] In this embodiment, the fixed cylinder 41 and the floating cylinder 42 are both cylinders, and the outer contour of the mounting frame 2 is circular.

[0036] In this embodiment, the above-mentioned connecting frame 43 includes a fixing ring 431 and a plurality of connecting rods 432. The above-mentioned fixing ring 431 is fixedly mounted outside the above-mentioned guide column 3. The plurality of connecting rods 432 are distributed at intervals along the circumference of the above-mentioned fixing ring 431. The two ends of the above-mentioned connecting rods 432 are respectively connected and fixed to the above-mentioned fixing ring 431 and the inner wall of the fixing tube 41.

[0037] In this embodiment, a circle of buffering washers 4111 is disposed at the upper end of the fixing cylinder 41. When the floating cylinder 42 falls downward under its own weight, the buffering washers 4111 can play a buffering role to prevent the floating cylinder 42 and the upper end of the fixing cylinder 41 from directly colliding.

[0038] In this embodiment, the fixed cylinder 41 includes a main cylinder body 411, a plurality of vertical beams 412 and a connecting ring 413. The plurality of vertical beams 412 are vertically fixed to the upper end of the main cylinder body 411. The connecting ring 413 is connected and fixed to the upper ends of the plurality of vertical beams 412. The air outlet is defined between two adjacent vertical beams 412. The structural design of the fixed cylinder 41 is simple and reasonable.

[0039] As a preferred embodiment, Figure 2 As shown, the guide column 3 is a hollow column, and nozzles 32 are provided on the side wall at intervals, and at least one or more nozzles 32 are located inside the air float assembly 4 . The upper end of the guide column 3 is connected to a flushing interface 33 .

[0040] In the above embodiment, the flushing interface 33 can be connected to an external high-pressure water source, and the water is sprayed out through the guide column 3 and the nozzle 32 to flush the interior of the fixed cylinder 41 .

[0041] In this embodiment, the upper end of the guide column 3 is bent transversely to the outside of the housing 1, and the upper end of the side wall of the housing 1 is provided with a notch for fitting into the bent portion of the upper end of the guide column 3. The notch and the bending design of the guide column 3 make the overall structural design more compact and reduce space occupation.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 or an electrical connection; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A wide load dust removal and demisting device, characterized in that: The invention comprises a housing (1), a hollow mounting frame (2), a guide column (3), an air flotation cylinder assembly (4) and a cyclone impeller (5), wherein the housing (1) is arranged vertically, and both the upper and lower ends thereof are open, and the cyclone impeller (5) is rotatably arranged in the lower opening, and the mounting frame (2) is detachably arranged in the upper opening of the housing (1), and the guide column (3) vertically penetrates the middle part of the mounting frame (2) and extends downward, and the air flotation cylinder assembly (4) comprises a fixed cylinder (41) and a floating cylinder (42), and the upper part of the fixed cylinder (41) is provided with a rotatable cyclone impeller (5). The lower ends are open, and the inner walls are assembled with the guide column (3) through a hollow connecting frame (43) connected thereto. An air outlet is provided on the upper part of the side wall of the fixed cylinder (41), and the lower end thereof is close to the cyclone impeller (5). The lower end of the floating cylinder (42) is open and is sleeved outside the fixed cylinder (41). A sliding sleeve (421) is provided on the top of the floating cylinder (42), and the sliding sleeve (421) is slidably sleeved outside the guide column (3). The floating cylinder (42) can move up and down under the action of an external force to open or cover the air outlet.

2. A wide load dust removal and demisting device according to claim 1, characterized in that: A limit block (31) is provided at the upper end of the guide column (3), and the floating cylinder (42) can slide upward under the action of an external force until the sliding sleeve (421) abuts against the limit block (31), thereby opening the air outlet.

3. A wide load dust removal and demisting device according to claim 2, characterized in that: The limiting block (31) is annular and is sleeved outside the guide column (3), and is connected and assembled with the guide column (3) via bolts that penetrate the limiting block transversely.

4. A wide-load dust and mist removal device according to claim 1, characterized in that: A plurality of mounting plates (21) that fit the inner wall of the outer shell (1) are provided at intervals along the circumferential direction on the outer periphery of the mounting frame (2); the mounting plates (21) are connected to the side wall of the outer shell (1) via bolts passing through them.

5. A wide-load dust and mist removal device according to claim 4, characterized in that: An annular support portion (11) is provided on the inner wall of the upper end of the housing (1), and the periphery of the mounting frame (2) is supported on the upper end of the support portion (11).

6. A wide-load dust and mist removal device according to claim 1, characterized in that: The connecting frame (43) comprises a fixing ring (431) and a plurality of connecting rods (432); the fixing ring (431) is fixedly mounted outside the guide column (3); the plurality of connecting rods (432) are spaced apart along the circumference of the fixing ring (431); and the two ends of the connecting rods (432) are respectively connected and fixed to the fixing ring (431) and the inner wall of the fixing tube (41).

7. A wide-load dust and mist removal device according to claim 1, characterized in that: A circle of buffer gasket (4111) is provided at the upper end of the fixing cylinder (41).

8. A wide-load dust and mist removal device according to claim 1, characterized in that: The fixed cylinder (41) comprises a main cylinder body (411), a plurality of vertical beams (412) and a connecting ring (413); the plurality of vertical beams (412) are vertically fixed to the upper end of the main cylinder body (411); the connecting ring (413) is connected and fixed to the upper ends of the plurality of vertical beams (412); and the air outlet is defined between two adjacent vertical beams (412).

9. A wide-load dust and mist removal device according to any one of claims 1 to 8, characterized in that: The guide column (3) is a hollow column, and nozzles (32) are provided on the side wall at intervals up and down, and at least one or more nozzles (32) are located inside the air float assembly (4). The upper end of the guide column (3) is connected to a flushing interface (33).

10. A wide load dust removal and demisting device according to claim 9, characterized in that: The upper end of the guide column (3) is bent transversely to the outside of the housing (1), and the upper end of the side wall of the housing (1) is provided with a notch for engaging with the bent portion of the upper end of the guide column (3).

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