High-temperature cyclone separator center cylinder fixing device

Abstract

The utility model discloses a high-temperature cyclone separator center cylinder fixing device, which belongs to the technical field of cyclone separators, and comprises a supporting part and lug type supports, the outer part of a center cylinder is provided with a plurality of lug type supports which are distributed at intervals along the circumferential direction of the center cylinder, the cylinder body is sleeved outside the central cylinder and is fixedly connected with the separator main body; and the second annular plate is horizontally and fixedly installed in the cylinder body and arranged outside the center cylinder in a sleeving mode, and a transverse adjusting gap exists between the bolt assembly and the lug type support. The connecting mode between the center cylinder and the separation cylinder body is changed by additionally arranging the supporting component and the lug type support, so that the center cylinder can be prevented from being scoured and deformed by high temperature, and replacement of the center cylinder is facilitated. In addition, the bolt assembly is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of cyclone separators, and more specifically, to a fixing device for the central cylinder of a high-temperature cyclone separator. Background Art

[0002] The high-temperature cyclone separator is one of the core components of a circulating fluidized bed boiler. Its main function is to separate a large amount of high-temperature solid materials from the dust-containing gas flow at the furnace outlet. The collected solid materials are continuously returned to the furnace to achieve multiple cycles of fuel, ensuring full combustion and reaction. At the same time, the ash balance and heat balance are realized to ensure the stability and efficiency of combustion in the furnace. In addition, it can maintain the fast flow state of the combustion chamber.

[0003] In existing circulating fluidized bed boilers, the fixing form of the central cylinder of the cyclone separator usually adopts welding, resulting in too many welds. And due to the continuous scouring of high-temperature dust-containing flue gas, the central cylinder is prone to vibration, making the steel plate easy to deform, thus affecting the separation efficiency.

[0004] After retrieval, a patent application case with the Chinese patent application number 2010101089423 discloses a fixing device for the central cylinder of a cyclone separator. The fixing device consists of a plurality of bolts, a plurality of nuts, a plurality of arc-shaped steel plates and two lifting lugs. A plurality of circular holes are evenly distributed on the circumference of the upper end cylinder wall of the central cylinder. The bolts pass through the corresponding circular holes from the inner wall side of the central cylinder and are threadedly connected with the nuts arranged outside the central cylinder. And the smooth rod part of the bolt has a clearance fit with the circular hole. Each nut abuts against the inner curved surface of the arc-shaped steel plate and is fixedly connected with the arc-shaped steel plate. The lower end of the arc-shaped steel plate is fixedly connected with the separator top plate, and the upper end of the arc-shaped steel plate is fixedly connected with the separator rib plate. There is a gap between the end face of the nut close to the central cylinder and the outer wall of the central cylinder, and the gap is 12 - 25 mm. The area enclosed between the lower end face of the separator top plate and the upper end face of the central cylinder and between the outer wall of the central cylinder and the furnace wall lining is filled with heat-insulating fibers. The two lifting lugs are symmetrically arranged along the central axis of the central cylinder and are fixedly connected with the upper edge of the inner wall of the central cylinder. The numbers of the bolts, nuts and arc-shaped steel plates are the same.

[0005] Although the above application case can solve the technical problem of the deformation of the central cylinder caused by the scouring of high-temperature gas, on the one hand, the nut abuts against the inner curved surface of the arc-shaped steel plate and is fixedly connected with the arc-shaped steel plate. The lower end of the arc-shaped steel plate is fixedly connected with the separator top plate, and the upper end of the arc-shaped steel plate is fixedly connected with the separator rib plate, resulting in difficult nut replacement. On the other hand, the bolts are installed at the openings of the central cylinder and are located inside the central cylinder, and are scoured by the high-temperature gas of the boiler, requiring high requirements for the bolt material. Summary of the Utility Model

[0006] In view of the technical problems in the prior art that when the central cylinder of a cyclone separator is fixed by welding, it is inconvenient to replace the central cylinder and it is also inconvenient to replace the connecting piece between the central cylinder and the separation cylinder body, the present utility model provides a fixing device for the central cylinder of a high-temperature cyclone separator. By adding a support component and an ear-type support, the central cylinder is connected to the separation cylinder body through a bolt assembly, and there is a lateral adjustment gap between the bolt assembly and the ear-type support, so as to prevent the central cylinder from deforming due to high-temperature scouring, facilitate the replacement of the central cylinder, and at the same time, the bolt assembly is also convenient to replace.

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows:

[0008] The present utility model provides a fixing device for the central cylinder of a high-temperature cyclone separator, including a support component and an ear-type support. A plurality of ear-type supports are arranged on the outside of the central cylinder at intervals along the circumferential direction thereof. Among them, the support component includes: a cylinder body, which is sleeved outside the central cylinder and fixedly connected to the separator body; a second ring plate, which is horizontally and fixedly installed inside the cylinder body and sleeved outside the central cylinder, and the second ring plate is connected to the plurality of ear-type supports through a bolt assembly; there is a lateral adjustment gap between the bolt assembly and the ear-type support.

[0009] Furthermore, the support component further includes a first ring plate, which is horizontally and fixedly installed at the bottom of the cylinder body and sleeved outside the central cylinder. A rib plate is installed on the first ring plate, and the second ring plate is supported and installed on the rib plate.

[0010] Furthermore, the bolt assembly includes a bolt and a nut. A first connection hole is opened on the supporting foot plate of the ear-type support, and a second connection hole is opened in the second ring plate. The bolt sequentially passes through the second connection hole and the first connection hole and is fixed by the nut; the outer diameter of the bolt is smaller than the inner diameter of the first connection hole.

[0011] Furthermore, the outer diameter of the bolt is smaller than the inner diameter of the first connection hole, and the bolt assembly further includes a sleeve, which is installed in the first connection hole and sleeved on the rod part of the bolt.

[0012] Furthermore, the inner diameter of the sleeve is larger than the outer diameter of the rod part of the bolt.

[0013] Furthermore, a washer is also provided between the nut and the supporting foot plate.

[0014] Furthermore, the support component further includes a third ring plate, which is horizontally and fixedly installed at the top of the cylinder body and sleeved outside the central cylinder.

[0015] Furthermore, the second ring plate, the rib plate, the first ring plate, the cylinder body, the third ring plate, and the separator body are all fixedly connected by welding.

[0016] Furthermore, the gap between the support member and the outer wall of the central cylinder is filled with refractory material.

[0017] Furthermore, the number of the lug supports is eight and they are evenly distributed on the outer wall of the central cylinder.

[0018] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0019] (1) By optimizing the connection mode between the central cylinder and the main body of the separation cylinder, the present utility model adds a plurality of lug supports spaced circumferentially on the outside of the central cylinder. The second ring plate in the support member is connected to the plurality of lug supports through bolt assemblies; through the connection mode of the bolt assemblies, it is convenient for the disassembly and assembly of the central cylinder and the replacement of the bolt assemblies, and reduces the welding amount of the central cylinder. At the same time, there is a lateral adjustment gap between the bolt assemblies and the lug supports, so that the bolt assemblies can slide horizontally relative to the lug supports, and then the central cylinder can have an adjustment gap relative to the main body of the separation cylinder under the scouring of high-temperature flue gas to reduce the deformation of the central cylinder.

[0020] (2) The present utility model further optimizes the design of the bolt assemblies. The sleeve is installed in the first connection hole and sleeved on the rod part of the bolt, so as to protect the bolt and the first connection hole. At the same time, a washer is also provided between the nut and the gusset plate of the lug support. The outer diameter of the washer is larger than the aperture of the first connection hole, so as to reduce the limitation on the nut selection. In addition, the number of the lug supports is eight, and correspondingly the number of the bolt assemblies is eight to resist the scouring of the flue gas at the inlet of the separator on the central cylinder, so as to be beneficial to fixing the central cylinder, and further beneficial to preventing the deformation of the fixing device and enhancing the separation efficiency.

[0021] (3) The present utility model further optimizes the installation space of the bolt assemblies. On the one hand, the second ring plate and the first ring plate are fixedly connected by rib plates. On the other hand, by adding lug supports on the outside of the central cylinder, the installation space of the bolt assemblies in the support member and outside the central cylinder is optimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic cross-sectional structure view of the fixing device of the central cylinder of the high-temperature cyclone separator in the embodiment of the present utility model.

[0023] Figure 2 is Figure 1 the enlarged structure view at A in

[0024] Figure 3 It is a schematic top view of the support member in the embodiment of the present utility model.

[0025] Label description:

[0026] 1. Central cylinder;

[0027] 2. The first ring plate;

[0028] 3. The second ring plate; 301. The second connection hole;

[0029] 4. The cylinder body;

[0030] 5. The third ring plate;

[0031] 6. The casing;

[0032] 7. The lug support; 701. The first connection hole; 702. The support foot plate;

[0033] 8. The refractory material;

[0034] 9. The rib plate;

[0035] 10. The nut;

[0036] 11. The bolt;

[0037] 12. The washer. Detailed implementation manners

[0038] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the drawings and embodiments.

[0039] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like cited in this specification are only for the convenience of clear narration, and are not used to limit the scope of implementation. The change or adjustment of their relative relationships, without substantial change of the technical content, should also be regarded as the scope that the present invention can be implemented.

[0040] Explanation of directions: For the convenience of clearly and completely describing the present utility model, in the embodiments, "transverse" refers to "the horizontal direction perpendicular to the axis of the central cylinder 1".

[0041] This embodiment provides a fixing device for the central cylinder of a high-temperature cyclone separator, as Figure 1As shown, it includes a support component and an ear - type support 7. A plurality of ear - type supports 7 are arranged at intervals along the circumferential direction outside the central cylinder 1. Among them, the support component includes: a cylinder body 4, the cylinder body 4 is sleeved outside the central cylinder 1 and fixedly connected to the separator main body; a second ring plate 3, the second ring plate 3 is horizontally and fixedly installed inside the cylinder body 4 and sleeved outside the central cylinder 1, and the second ring plate 3 is connected to the plurality of ear - type supports 7 through bolt assemblies; and there is a lateral adjustment gap between the bolt assemblies and the ear - type supports 7.

[0042] In this embodiment, the second ring plate 3 in the support component is connected to the plurality of ear - type supports 7 through bolt assemblies, so as to realize the detachable connection between the central cylinder 1 and the separation cylinder main body, which is convenient for the disassembly and assembly of the central cylinder and the replacement of the bolt assemblies. In addition, there is a lateral adjustment gap between the bolt assemblies and the ear - type supports 7, so that the bolt assemblies can slide horizontally relative to the ear - type supports 7. Furthermore, the central cylinder 1 can slide horizontally relative to the separation cylinder main body under the scouring of high - temperature flue gas to reduce the deformation of the central cylinder 1.

[0043] Specifically, as Figure 3 shown, the support component further includes a first ring plate 2. The first ring plate 2 is horizontally and fixedly installed at the bottom of the cylinder body 4 and sleeved outside the central cylinder 1. A rib plate 9 is installed on the first ring plate 2, and the second ring plate 3 is supported and installed on the rib plate 9, thus leaving an installation space for the bolt assemblies in the support component. The bolt assemblies pass through the second ring plate 3 between adjacent rib plates 9.

[0044] Preferably, as Figure 2 shown, the bolt assembly includes a bolt 11 and a nut 10. A first connection hole 701 is opened on the support foot plate 702 of the ear - type support 7, and a second connection hole 301 is opened in the second ring plate 3. The bolt 11 passes through the second connection hole 301 and the first connection hole 701 in sequence and is fixed by the nut 10; the outer diameter of the rod part of the bolt 11 is smaller than the inner diameter of the first connection hole 701.

[0045] When the outer diameter of the bolt 11 is smaller than the first connection hole 701, the bolt 11 can slide horizontally in the first connection hole 701, so that the central cylinder can have an adjustment gap relative to the separation cylinder main body under the scouring of high - temperature flue gas, and further reduce the deformation of the central cylinder.

[0046] In some embodiments, the bolt assembly further includes a sleeve 6. The sleeve 6 is installed in the first connection hole 701 and sleeved on the rod part of the bolt 11 to protect the external thread of the bolt 11 and the inner wall of the first connection hole 701. Preferably, the inner diameter of the sleeve 6 is larger than the outer diameter of the rod part of the bolt 11.

[0047] Further preferably, a washer 12 is also provided between the nut 10 and the support foot plate 702. Specifically, the outer diameter of the washer 12 is larger than the aperture of the first connection hole 701, so as to reduce the limitation on the selection of the nut 10.

[0048] In some other embodiments, the support member further includes a third ring plate 5, which is horizontally and fixedly installed at the top of the cylinder body 4 and sleeved outside the central cylinder 1, thereby being beneficial to further improving the fixing stability of the central cylinder 1.

[0049] Furthermore, the second ring plate 3, the rib plate 9, the first ring plate 2, the cylinder body 4, the third ring plate 5, and the separator main body are all fixedly connected by welding. Specifically, the middle of the cylinder body 4 and the separator main body, the top of the cylinder body 4 and the third ring plate 5, the bottom of the cylinder body 4 and the first ring plate 2, between the first ring plate 2 and the rib plate 9, and between the rib plate 9 and the second ring plate 3 are all fixedly connected by welding.

[0050] As a further preferred solution of any of the above embodiments, the gap between the support member and the outer wall of the central cylinder 1 is filled with a refractory material 10. Specifically, the areas enclosed by the support member, the lug support 7, the top of the separator, and the outer wall of the central cylinder 1 are all filled with a refractory material 8.

[0051] Furthermore, the number of the lug supports 7 is eight and they are evenly distributed on the outer wall of the central cylinder 1. More preferably, the lug supports 7 and the outer wall of the central cylinder 1 are fixedly connected by welding, thereby avoiding the opening of holes in the central cylinder 1; at the same time, the multiple lug supports 7 are welded to the outer wall of the central cylinder 1 at intervals, reducing the welding amount of the central cylinder 1.

[0052] The above embodiments fix the central cylinder 1 by arranging the lug supports 7 and the support member outside the central cylinder 1. The second ring plate 3 in the support member is fixedly connected to the separator main body, and the lug supports 7 and the second ring plate 3 are connected by bolt assemblies; thereby realizing the fixation of the central cylinder 1, which is beneficial to the replacement of the central cylinder, and at the same time the bolt assemblies are convenient to replace. In addition, there is a lateral adjustment gap between the bolt assemblies and the lug supports 7, thereby being able to solve the technical problem that the central cylinder 1 is prone to deformation under the erosion of high-temperature gas, prolong the service life of the central cylinder 1, improve the separation efficiency of the high-temperature cyclone separator, and reduce energy consumption.

[0053] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative efforts without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A fixing device for the central cylinder of a high-temperature cyclone separator, characterized in that It includes a support member and lug supports (7). A plurality of lug supports (7) are arranged at intervals along the circumferential direction on the outside of the central cylinder (1). Among them, the support member includes: A cylinder body (4) sleeved outside the central cylinder (1) and fixedly connected to the separator main body; A second ring plate (3) horizontally and fixedly installed inside the cylinder body (4) and sleeved outside the central cylinder (1). The second ring plate (3) is connected to the plurality of lug supports (7) through bolt assemblies; And there is a lateral adjustment gap between the bolt assembly and the lug support (7).

2. The central cylinder fixing device of the high-temperature cyclone separator according to claim 1, wherein The support member further includes a first ring plate (2) horizontally and fixedly installed at the bottom of the cylinder body (4) and sleeved outside the central cylinder (1). A rib plate (9) is installed on the first ring plate (2), and the second ring plate (3) is supported and installed on the rib plate (9).

3. The central cylinder fixing device of the high-temperature cyclone separator according to claim 2, characterized in that, The bolt assembly includes a bolt (11) and a nut (10). A first connection hole (701) is formed in the support foot plate (702) of the lug support (7), and a second connection hole (301) is formed in the second ring plate (3). The bolt (11) sequentially passes through the second connection hole (301) and the first connection hole (701) and is fixed by the nut (10); The outer diameter of the bolt (11) is smaller than the inner diameter of the first connection hole (701).

4. The central cylinder fixing device of the high-temperature cyclone separator according to claim 3, characterized in that The bolt assembly further includes a sleeve (6). The sleeve (6) is installed in the first connection hole (701) and sleeved on the rod part of the bolt (11).

5. The high-temperature cyclone separator central cylinder fixing device according to claim 4, characterized in that, The inner diameter of the sleeve (6) is larger than the outer diameter of the rod part of the bolt (11).

6. The central cylinder fixing device of the high-temperature cyclone separator according to any one of claims 3-5, characterized in that, A washer (12) is further provided between the nut (10) and the support foot plate (702).

7. The central cylinder fixing device of the high-temperature cyclone separator according to any one of claims 1-5, characterized in that, The support member further includes a third ring plate (5) horizontally and fixedly installed at the top of the cylinder body (4) and sleeved outside the central cylinder (1).

8. The central cylinder fixing device of the high-temperature cyclone separator according to claim 7, characterized in that, The second ring plate (3), the rib plate (9), the first ring plate (2), the cylinder body (4), the third ring plate (5), and the separator main body are all fixedly connected by welding.

9. The central cylinder fixing device of the high-temperature cyclone separator according to any one of claims 1-5, characterized in that, The gap between the support member and the outer wall of the central cylinder (1) is filled with refractory material (8).

10. The high-temperature cyclone separator central cylinder fixing device according to any one of claims 1-5, characterized in that, The number of the lug supports (7) is eight and they are evenly distributed on the outer wall of the central cylinder (1).

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